397 results about "Tide level" patented technology

The invention provides a method for forecasting the tide level in a tidal river network and belongs to the technical field of hydrodynamic force simulation and hydrologic forecasting. A computational fluid dynamics (CFD) method and a water level forecasting method are comprehensively applied, the problem that the water level in the tidal river network is difficult to accurately forecast due to multi-branch stream bypass flowing and open sea tide influences is solved, and the application range and precision of tidal river network tide level forecasting are improved. The method mainly comprises the following steps that firstly, a tidal river network region and upstream riverway one-dimensional hydrodynamic force mathematical model is established; secondly, the hourly tide level processes of a control station of a river mouth are precast through harmonic analysis, and forecast values are corrected through measured data of the day before forecasting; thirdly, flow processes of control stations of an upstream are derived through a weighted moving average method; fourthly, tide level processes of all fracture surfaces in a tidal river network region are solved through the tidal river network region and upstream main stream area one-dimensional hydrodynamic force mathematical model, and the tide level forecasting of any fracture surface in the river network region is achieved.

The invention relates to a flood combined probability analysis method and an application thereof based on Copula. The flood analysis method is aimed at providing a flood control construction basis for tidal river reach, and mirroring functions of affecting overflowing of flood facilities and characteristic quantity of regulation and storage capacity through creation of a joint probability distribution function about sea level, rainfall peak and subrainfall so that reliable basis is provided for anti-flood construction.

The invention discloses a large-scale ecological purse seine breeding device in shallow sea. The large-scale ecological purse seine breeding device in the shallow sea comprises a buoyancy system, a netting system, a dragon-shaped sandbag and an anchoring system, wherein the buoyancy system comprises double-row main floating pipes which are arranged in a parallel mode at intervals and a shore connecting structure which is fixedly arranged on the shore; two ends of the main floating pipes are respectively connected to the shore connecting structure and can longitudinally move up and down relative to the shore connecting structure; the netting system comprises a purse seine and the upper end of the purse seine is fixedly connected with the main floating pipes; the dragon-shaped sandbag is arranged at the bottom of the netting system; the anchoring system comprises a main anchor rope, the upper end of the main anchor rope is connected to the main floating pipes, and the lower end of the main anchor rope is fixedly arranged at the bottom of the sea through a piled anchor or an anchor block. The large-scale ecological purse seine breeding device in the shallow sea has the advantages of meeting the strength requirement of the buoyancy system of the purse seine by utilizing a mode of fixing the purse seine under the HDPE (high-density polyethylene) main floating pipes; ensuring a purse seine system to be always connected closely with a coastal connecting section and avoiding escape of the fish due to the fact that a buoy which is arranged in the shore connecting structure changes along with water levels; and being capable of avoiding the purse seine winding under different tide levels by arranging a chain and a floating ball string in the purse seine.

A wave power generation system adaptive to tidal fluctuation comprises a seafloor foundation which is arranged on seabed, two or more than two guide pile legs and a hydraulic lifting system which are fixed on the seafloor foundation respectively, and a support framework which is connected to the top end of the hydraulic lifting system. The support framework is movably connected with the two or more than two guide pile legs and rises and drops along slide ways which are arranged on the guide pile legs driven by the hydraulic lifting system, a swinging plate device which swings with the wave of the sea water and a power generation device which is connected with the swinging plate device are arranged on the support framework, and a tide level sensor which is connected with the hydraulic lifting system through a lead is installed on the part of the swinging plate device above the sea surface. The wave power generation system adopts the automatic hydraulic lifting system, needs no human operation and can adjust the position of the swinging plate device with the tidal fluctuation; moreover, the wave power generation system has advantages of high energy conversion efficiency, simple mechanism, high reliability, low production cost and the like.

The invention discloses a floating cofferdam type wave energy generating set, which comprises a tower convergent wave pool consisting of a platform and a multistage conic pool. The bottom of the tower convergent wave pool is divided into a plurality of ballast tanks and provided with a water level sensor, the upper cavities of the ballast tanks are filled with a buoyancy material, the platform is arranged on the buoyancy material of a groove in the middle of the convergent wave pool, and the platform is provided with a controller, a compressed air system and a baffle wall; the baffle wall is provided with a sensor, the low level of each stage of the convergent wave pool is provided with a pipeline leading to the sea level, the pipeline is internally provided with a Kaplan turbine and an asynchronous generator, the floating cofferdam type wave energy generating set is connected with anchor pipers with swivel links through anchor chains, and the anchor pipers are anchored at the bottom of the sea. According to the draught height of a wave height adjusting device, the floating cofferdam type wave energy generating set is not influenced by tide level and limited by terrain, always works towards the waves all around, can catch the wave energy as much as possible under various conditions, and has the advantage of high working efficiency; only the Kaplan turbine is the unique movable component so that the reliability of the whole set is improved.

The invention provides a submerged floating energy-gathered guiding type wave power generation platform and belongs to the field of ocean engineering and wave power generation equipment technologies. The submerged floating energy-gathered guiding type wave power generation platform is high in wave energy utilization rate and comprises a submerged floating body, an energy conversion device and a mooring system. The platform can adapt to multiple working conditions by controlling and adjusting ballast water quantity in ballast tanks in the submerged floating body through an automatic adjusting ballast water system and can not be affected by tide level changes and water level changes. The platform can adapt to wind wave current force in different directions by adjusting the mooring system so that a swing board on the platform can be adjusted to the head sea working direction. The wave end of the submerged floating body is provided with a contracted energy-gathered guiding wave path and can substantially improve the wave energy conversion rate. The bottom of the submerged floating body is provided with an electric generator, storage batteries and other energy conversion devices. The maintenance cost is low, the conversion distance from mechanical energy to electric energy is shortened, and the generating efficiency is improved. According to the submerged floating energy-gathered guiding type wave power generation platform, a power generation system can be established in a nearshore sea area just through the manner that the submerged floating body is located through anchor chains, and the submerged floating energy-gathered guiding type wave power generation platform is a reliable, efficient and economical marine power generation platform.

The invention discloses an automated test device for simulating an ocean level fluctuation zone and a wave splash zone. The automated test device comprises a water storage tank, wherein the water storage tank is connected with a corrosive water tank through a tide control system, a wave splash control system is connected between the water storage tank and the corrosive water tank, the corrosive water tank is internally provided with an ocean temperature control system and is provided with an air blowing system, the tide control system, the wave splash control system, the ocean temperature control system and the air blowing system are connected with a PLC (Programmable Logic Controller) system, and the PLC system receives a temperature control parameter, an air blowing control parameter, a tide control parameter and a wave splash control parameter and sequentially transmits the parameters to the ocean temperature control system, the air blowing system, the tide control system and the wave splash control system. The automated test device can be used to control water inlet / outlet time, retention time of high / low tide level, cycle times, wave splash time, wave splash interval and the like in a full automatic manner; and in addition, an air blowing process can be added optionally as required so as to accelerate the test, so that the labor intensity is reduced greatly and the test efficiency is improved.

The present invention describes a floating yawing spar buoy current / tidal turbine. The spar includes a spreader above the rotor(s) with the spreader tips connected to fore and aft cable yokes that transition to opposing mooring lines connected to anchors on the seabed. The spreader comprises a yaw motor, which drives gears that engage with a ring gear fixed to the outer perimeter of the spar. Flow direction sensors activate the yaw motor for automatic yaw adjustments of the spar turbine. As tidal direction changes, the entire spar and turbine are yawed to maintain the rotor plane facing the tidal flow. The bottom end of the spar extends to approximately the bottom sweep of the rotor plane and contains a winched vertical mooring line, extending to the seabed and attached to a gravity or suction pile anchor. The turbine drive train can be accessed for servicing from the surface via hatches and ladders within the spar to enter the drive train and generating system vessel. The spar turbine is deployed by towing it in a horizontal position. At the operating site, the yokes are connected to the forward and aft mooring lines and the winch line is connected to the gravity anchor. The winch inside the keel draws the bottom end of the spar down and may be assisted by flooding the keel to reach a vertical position for the spar. The winch is then locked to retain required operating depth, or can actively control operating depth in areas of wide tide level range.

As for the floodgate which it flows into one-way from a tide level, the High Water Source flowing in is made, and the Low Water Source flowing out is made. A tank is located between these Water Sources, repetition of the feed water from a high-water level, and the drain to a low-water level, it generates electricity by rotating a air turbine by the pressure in a Tank. As for the method of the improvement in efficiency, a turbine is set to Air Duct between two sets of tanks, the double electric power is obtained by interlocking with opposite feed water and drain. Moreover, the variation of electric power is improved by shifting the cycle of the tank of parallel movement. And it responds to water level in a tank, the stable production of electricity is obtained by the drive of selection of the turbine of the capacity difference of a parallel drive. If this mechanism is opened and closed with the underwater valve of a big flow, it becomes possible to obtain the big electric power. The underwater valve of the Specific-gravity near water is made into locking mechanism, locking is canceled at the case of opening, the valve closed by own weight when a stream stops, thereby, a big flow is made to control with energy conservation. Moreover, there is attachment of efficiency improvement mechanism and the increase difference mechanism of Water Sources in this invention.

The invention discloses a method for short-term prediction of salt tide at a water intake in a tidal river region. The method comprises the following steps of: analyzing the following influencing factors: the flow of upstream hydrologic monitoring stations and the tide level difference, water unavailable hours and average chloride concentration of the water intake in a day so as to establish a BP-RAGA coupled neural network salt tide forecasting model and predict the water unavailable hours and average chloride concentration of the water intake in the next day; and determining the water available hours and amount of each water intake on the basis of the prediction so as to determine the time and space distribution of raw water intaking amount of the tidal river in the next day and finally draw up a dispatching predetermined plan of a raw water system by combining an optimal dispatching module of the raw water system, so that the safe operation of the raw water system and safe urban water supply are ensured. Compared with the conventional prediction systems, the method can dynamically determine the weight of each influencing factor in the prediction module by fully using existing information, improve the sensitivity and precision of the prediction and have lower rate of missing report and false report.

The invention discloses a method for simulating back-silting of a basin channel of a force tide firth artificial island operating area. The method comprises the steps of establishing a water flow mathematical model by use of a water flow sediment mutual feedback calculation mode and variable roughness factors changing with geomorphology and tide levels; calculating representative wave radiation stresses at different tide levels; optimizing an artificial island plane modality; performing wave, tide and runoff and sediment discharge coupling fitting; and finally, counting aback-silting amount. According to the method, in a wave current sediment mathematical model construction process, the requirement of basin channel back silting simulation of force tide firth artificial island operating areas with different geomorphologic shapes can be adapted and satisfied for the unique dynamic geomorphology characteristics of irregular coastlines of a semi-closed force tide firth offshore artificialisland, large tidal volume of inflow and outflow of force tides, wide tidal flat and complex geomorphology, strong tidal current under the action of rotary current, high influence of waves and combined action of sediment movements affected by wave currents in consideration of the variable roughness factors changing with the geomorphology and the tide levels.

The invention discloses a tide level self-adaption device of a vibration floater wave power generation device. The vibration floater wave power generation device comprises a submerging and surfacing body, guide rods, a floater, a hydraulic cylinder and sleeves, wherein the guide rods are arranged on the submerging and surfacing body; the floater and the sleeves are both sleeved on the guide rods; the cylinder block of the hydraulic cylinder is fixedly connected with the sleeves through support arms; a piston rod of the hydraulic cylinder is fixedly connected with the floater; the tide level self-adaption device comprises a wave height adjustment frame and a damping mechanism. According to the tide level self-adaption device, adaptive adjustment can be performed on the position of the hydraulic cylinder along with the tide level change, so that the effective working distance between the floater and the hydraulic cylinder is ensured, the power generation device is ensured to have higher energy conversion efficiency, and meanwhile, the dangerous situation that the piston rod rushes to the top or is separated from the cylinder block of the hydraulic cylinder is avoided; moreover, the tide level self-adaption device is formed completely by matching mechanical structures, and electronic components or electronic control systems are not related, so that the tide level self-adaption device is simpler and more stable in structure, and cannot be influenced by the marine environment, can stably work under the maritime severe environment for a long time, and does not need to be maintained frequently, so that the use and maintenance cost is extremely low.

The invention relates to an intertidal zone habitat survey method based on unmanned aerial vehicle aerial photography. The method comprises the steps that an unmanned aerial vehicle low-altitude aircraft is adopted as a remote sensing platform, needs to carry a digital camera, and integrates a GPS and a gyroscope module; a tidal table of a surveyed intertidal zone region is inquired; executable time periods of unmanned aerial vehicle aerial photography are determined according to high and low tide levels and tide time of a spring tide period; flight numbers and air lines of the aerial photography and control points needing to be arranged are planned; arrangement of the control points, measurement and aerial flight photography are completed; aerial photography images are processed, exposure adjusting, image splicing and geometric correcting are involved in processing, and therefore a high-resolution image of the whole survey range can be formed; speckle extracting and spatial formation ecological parameter calculating are carried out on specific type of the intertidal zone habitat. The method overcomes the defect of an existing intertidal biology survey method or a traditional topographic survey method, obtains spatial framework information of the intertidal habitat, and provides the basis for evaluating the ecological function and the ecological value of the inter-tidal habitat.

The invention discloses a system for observing and simulating a wind-wave-flow coupling field for a sea-crossing bridge, and the system comprises a wind observation system, a wave flow observation system, a tide level observation system, a data collection and storage system, and a wind-wave-flow coupling field numerical analysis system. The wind observation system comprises a plurality of wind observation stations, and the wind observation stations are located on the lands of two shores for gradient wind observation. The wave flow observation system comprises a plurality of wave flow observation stations, and the wave flow observation stations are located in nearby water areas for continuous observation of wave surfaces and layered flowing speeds. The tide level observation system comprises a plurality of tide level observation stations, and the tide level observation stations are located in water areas which are located at the place of the bridge and nearby the shores. The observation data of the spatial correlation among wind, wave, ocean current and tide level and the time synchronization and continuous observation data are stored in the data collection and storage system. Based on the above observation data, the wind-wave-flow coupling field numerical analysis system builds a wind-wave-flow coupling field numerical simulation model. The wind-wave-flow coupling field characteristic parameters which are spatially correlated and synchronous in time and act on the bridge are analyzed through combining with historical observation data after verification and correction.

The invention discloses a control device of the slope tide level under super gravity. A water storage chamber is arranged at the bottom of a model case, the upper portion is partitioned into left and right level adjusting chambers and a middle model chamber, the middle chamber is provided with a tested soil layer, two peristaltic pumps extends to the bottoms of the level adjusting chambers through centrifuge rotating joints respectively, hole pressure sensors are fixed to the bottoms of the level adjusting chambers, an exhaust pipe and a water drainage pipe of the left level adjusting chamber is communicated with the water storage chamber, the side of the water drainage pipe is provided with a straight groove, and a piston is installed in the water drainage pipe and matches with the exhaust pipe in a sliding manner; one end of an electrical cylinder is connected to the top of the piston, and the other end is fixed to the upper portion of the model case. The device is adaptive to centrifuge slope internal level control and external tide level control, the level information is fed back in real time for controlling, the level control accuracy is high, the continuous control of the centrifuge slope tide level and fluctuation rate is implemented, the actual hydraulic condition is restored, and the device is simple in entire structure and easy to install.

The invention discloses a prefabricate type nautical fixed platform and an installing method. The prefabricate type nautical fixed platform and the installing method comprises following steps: 1) a temporary locating step: atoll bulging rocks can be used as a fulcrum, and a winding machine can be used for dragging a platform main body to a construction preinstallion position in a high tide level. A low tide level and a method of injecting water into a ballasting cabin can be used for contacting the bottom of the main body to a surface of a foundation, and locating piles are used for temporarily fixing the main body on the foundation. 2) A sinking leveling step: length that each locating pile extends out of the bottom of the main body can be controlled, and positions and levelness of the bottom of the main body can be adjusted. 3) A sinking fixing step: gravels which are in a gravel cabin can be discharged through a gravel channel to fill gaps between the surface of foundation and the bottom of the main body. Fixing of the prefabricate type nautical fixed platform can be completed. The prefabricate type nautical fixed platform and the installing method has the advantages of being stable in main body structure and low in manufacture cost. The function is easy to level. The prefabricate type nautical fixed platform and the installing method is high in planeness, accurate in fixing location and capable of being installed on the atolls or submerged rocks or sandy beaches. The prefabricate type nautical fixed platform is easy to construct and stable in fixing.

The invention discloses a combined wave power generation device provided with oscillating buoys as well as a measurement and control system of the device. The power generation device and the measurement and control system are included, multiple groups of hiding platforms can be arranged according to the installed capacity, and multiple oscillating buoys are mounted on each hiding platform. On the basis of a traditional wave power generation device provided with oscillating buoys, a hydraulic energy storage system, a tide level adaptation system and a wave detection system are designed. The hydraulic energy storage system controls energy storage and energy release of energy accumulators to drive a power generator to generate power according to the upper limit and the lower limit of energy storage pressure of an energy accumulator group in combination with real-time wave information. According to the device, multi-point energy absorption replaces traditional single-point energy absorption, immediately captured wave energy can be maximized, the measurement and control system can cooperate with the combined wave power generation device provided with the oscillating buoys, multiple defects of shorter wave period, small wave height and low energy flux density of national offshore wave energy resources can be effectively overcome, and maximum-efficiency conversion of wave energy to power and maximum-efficiency utilization of the power are realized.

The invention discloses a self-lifting semi-submersible type underwater working platform which comprises a main ship body, a lifting mechanism, a plurality of buoyancy tanks and at least four pile legs. The lifting mechanism is fixedly installed on the main ship body, and the lifting mechanism is connected with the four pile legs in a matched mode and can drive the main ship body to slide longitudinally along the pile legs. The buoyancy tanks are symmetrically installed on the main ship body, and a main deck penetrating through the main ship body in the front-back direction is formed on the upper side face of the main ship body. By the adoption of the technical scheme, the self-lifting semi-submersible type underwater working platform is simple in structure and easy to obtain, the position of the main deck can be adjusted vertically to be flush with a wharf shore foundation, and the position of the main deck is prevented from being influenced by the wharf height and tide level change; and in addition, in the horizontal movement loading and unloading process, the pile legs are inserted so as to achieve a supporting function, the main deck is kept flush with the wharf shore foundation all the time, complex operation of load adjustment of floating shipping is avoided, and the defects of a wide tidal range, a fast tide level change and a large wharf height difference can be overcome.

The invention relates to a forecasting method of the water level of potamic tidewater. A traditional forecasting method of tidal hour comprises a time propagation method and a time isolation retardation method which weaken the influence of multiple factors, such as tides, radial flows, riverway terrain, wind power, wind directions, and the like on the tidewater to a certain extent. The forecasting method of the water level of the potamic tidewater comprises the following concrete steps: firstly, constructing a neural network model based on a neural network function in a kit function library of MATLAB 6.5 and the history data of tidewater water levels and time; then, utilizing a neural network training function in the kit function library to train a network; utilizing a simulation function to test the network; and finally, using the trained and tested neural network model to forecast a water level value of the next high tide level or the next low tide level. The invention uses the history tidewater data to forecast the water level value of short-term tidewater and can fully neglect the influence of uncertain factors, such as wind directions, rainfall, water supply and drainage, river-bed variation, and the like.

The invention relates to an environment-friendly blasting compaction method for treating a soft foundation, which is characterized in that: the environment-friendly blasting compaction method for constructing a dike starts with blasting shock wave energy and a transmission medium, reduces the blasting shock wave energy, changes the blasting influence transfer pathway and blocks the transmission medium of the shock wave; microsecond blasting is preferred; a construction method of combining the microsecond blasting with an exposed beach blasting is utilized when the blasting vibration influence area is in the range of low-tide dike head silt packets; and a construction method of combining the microsecond blasting with an air bubble curtain is utilized when the blasting vibration influence area is in the range of seawater in the lowest tide. The environment-friendly blasting compaction method for treating the soft foundation has the good effects of reducing the energy generated by the blasting compaction, blocking the transfer pathway of the blasting shock wave, reducing the powerful shock wave, the intense vibration and the noise generated by the blasting to the minimum and realizing blasting compaction environmental-friendliness construction.

The invention discloses a method for calculating the extreme high water levels in different reappearance periods under the insufficient long-term tide level data condition. The method for calculating the extreme high water levels in different reappearance periods under the insufficient long-term tide level data condition comprises the steps that 1, topographic data, meteorological data and actually-measured water level data are obtained; 2, an ADCIRC model is established, and the reliability of the model is verified; 3, the typhoon data in a long time of a study area are obtained, joint distribution of all factors is considered by means of a Monte Carlo model, the historical occurrence scope of each parameter is defined, and one parameter is regenerated in each defined scope, so that a new storm tide driving element set is generated; 4, the extreme water levels are generated by simulating all the storm tide driving element sets by means of the ADCIRC model, and the corresponding reappearance period is calculated. According to the method for calculating the extreme high water levels in different reappearance periods, the set of comprehensive storm tide elements, combined with the Monte Carlo model, for simulating the required historical reappearance periods is formed; by the adoption of the method for calculating the extreme water levels based on the dynamic ADCIRC model, the extreme high water levels in different reappearance periods can be accurately determined under the insufficient long-term tide level data condition.

The embodiment of the invention discloses a coastline transition remote sensing monitoring and analyzing method and device. By applying the scheme provided by the embodiment of the invention, the coastline can be automatically extracted through an object-oriented method based on a remote sensing technology, so that the dynamic change of a coastline can be efficiently monitored. Moreover, coast material composition and coast development status are comprehensively considered, and based on image features of different coast types, and features of colors, textures, spatial distribution and the likeare analyzed, so that accurate extraction of coast line types is realized. On the basis of sea-land separation, waterline extraction and coastline classification, the coastline is corrected accordingto a tide level correction model and in combination with indirect ground feature characteristics of different coasts, the coastline in strict significance is obtained, and the accuracy of coastline determination is improved. And the coastline change condition can be accurately analyzed through a coastline change rate, a coastline type change index and a coastline fractal dimension change index.

The invention discloses a method for disassembling and assembling a superaqueous bridge, which combines the buoyancy change of a barge with the waterlevel change caused by the rising and the falling of the tide level. The method can be used in a light-draft area where a floating crane can not enter, and can be effectively and safely used within the carrying capacity range of a buoyant box.

The invention discloses a totally-enclosed power generation device simultaneously utilizing wave energy and wind energy. The totally-enclosed power generation device comprises a floating body with an enclosed inner cavity, wind receiving wings arranged on the upper portion of the floating body and an anchor chain connected to the lower end of the floating body, the floating body is anchored with the seabed through the anchor chain, a spring oscillator, four sets of rocking bar devices, a drive mechanism and a generator which are connected are fixed in the inner cavity of the floating body from top to bottom in sequence, the spring oscillator is connected onto the inner wall of the floating body through springs and can oscillate bilaterally, front and back and vertically, the rocking bar devices absorb oscillation energy of the spring oscillator, and kinetic energy when the spring oscillator oscillates towards all the directions is outputted through the drive mechanism to serve as unidirectional-rotation kinetic energy for driving the generator to generate power. The wave energy and the wind energy in any direction can be utilized at the same time for power generation, a main power generation mechanism does not contact with seawater, and the totally-enclosed power generation device is high corrosion resistance, good in damage resistance, convenient for field installation and throwing and adaptable to any tide level, terrain and sea conditions.

This invention discloses ocean tide power generation equipment and method, which contains V-shape check dam, overtopped dam, water storage reservoir, drainage reservoir, water intake gate, drainage sluice and power generator set. When the ocean is on the tide, open intake gate, close sluice in ebb, use the water level difference to generate electricity. Said V-shape check dam can collect sea water as the tide is small. Said invention has low cost and stable operation.

The invention relates to coastal wave cyclone power generation method and installation. The installation comprises a seaward slope on a coastline. Multiple tiers of water intakes for capturing sea wave and higher than mean tide level are arranged on the seaward slope. The lowermost first tier of water intakes is connected with a pool for accumulating sweater. An expansion guide wall is disposed on the bed of the pool. A one-way flap valve is mounted at an expansion opening of the expansion guide wall. A plurality of guide piers are transversely arranged on the downstream of the one-way flap valve. Flared vertical tubes are arranged on the downstream of the guide piers. Water turbines coaxially connected with a generator are installed in the flared vertical tubes. The flared vertical tubes are connected with draft tubes. Water flow generates venting vortexes by the aid of the flared vertical tubes and spiral piers at outer edges of flared openings, and the vortexes can drive the water turbines to rotate to generate power at various tide levels and low water heads. A foundation for the installation can be made of coarse aggregate concrete caissons and reinforced concrete superstructure and is built with a breakwater, engineering investment can be shared, and the cost of the power generation installation is lowered.

The invention discloses a Beidou satellite system-based tide level data transmission and control method. The Beidou satellite system-based tide level data transmission and control method comprises a data acquisition process and a data processing and publishing process, wherein the data acquisition process comprises the following steps of: sending a tide level data analog signal collected by a collector to a data A / D (Analog to Digital) converter, converting the tide level data analog signal to a digital signal through the A / D converter, and transmitting the digital signal to a first Beidou communication receiver; the data processing and publishing process comprises the following steps of: sending tide level data to a Beidou communication director of a control unit by the first Beidou communication receiver based on the Beidou satellite system; transmitting the data to a PC (Personal Computer) by the Beidou communication director; carrying out filtering, curve plotting and processing on the tide level data by the PC; generating a standard chart according to daily production requirements; connecting the Beidou communication director with the PC; determining a working state according to a tide level curve; and finally publishing the processed data to the public based on the Beidou satellite system. The Beidou satellite system-based tide level data transmission and control method is not restricted by a transmission distance, is capable of realizing efficient dispatching management of construction ships and improving the dredging construction efficiency.

The invention provides a laser berthing and environment monitoring system, which comprises two laser range finders, an anemorumbometer, a tide level instrument, an industrial computer and an alarm. The laser range finders are arranged in parallel and spaced by a certain distance, the laser range finders, the anemorumbometer and the tide level instrument are connected with an input end of the industrial computer, and an output end of the industrial computer is connected with the alarm. The offshore distance of a ship, the speed of the ship and the angle between the ship and the wharf are detected by the aid of the laser range finders on a wharf, environment data including the wind speed, the wind direction, the temperature, the humidity, the atmospheric pressure, the tide level, the velocity of waves, the flow direction of the waves and the like can also be monitored, and accordingly berthing operation of the ship can be guided; and an alarm signal can be displayed when the berthing speed of the ship is excessively fast or the angle of the ship is over large, so that operators and ships in a field can be reminded, and accidents causing damage to wharf (ship) facilities are prevented.

A water level response estimation method of river bed evolutions in different areas under hydrodynamism comprises the following steps: collecting runoff data of riverway areas to be estimated since hydrologic records, determining dominant discharge, and selecting a dominant formative runoff date according to the type of a tide to actually measure the tide level process at the river mouth; acquiring an actually measured natural river bed topographic map before and after the dominant formative runoff date; acquiring the geological data of the natural river bed, and determining the burial depth and the width of sand beds on cross sections; determining the characteristic parameters of bed load and suspended load through a soil test; establishing a flow and sediment mathematics calculation model according to the basis data; determining the roughness of the natural river bed through the water level verification, the sand content verification of the suspended load, and erosion-siltation verification of a terrain; analyzing the evolution property of the natural river bed under the common effect of dominant formative runoff and the tideway, and classifying the evolution property of the river bed in three groups under hydrodynamism; forecasting the future riverway water level change rule under hydrodynamism.

The invention relates to a platform device capable of being used for large-scale wave power generation and belongs to the field of ocean energy equipment. The platform device capable of being used for large-scale wave power generation comprises a hydraulic energy storage system, pile legs, hydraulic cylinders, a floating platform, pile sleeves and pontoons. The multiple pile legs are hit into a marine foundation, the pile legs are sleeved with the pile sleeves, the floating platform is fixed to the pile sleeves, the multiple hydraulic cylinders are installed on the floating platform, the hydraulic energy storage system is installed beside the hydraulic cylinders, and the pontoons are installed on telescopic rods of the hydraulic cylinders. The pile sleeves are in clearance fit with the pile legs. The pile sleeves are in the type of hollow rings and provide buoyancy for the floating platform. The floating platform is of a cuboid box type structure. All the hydraulic cylinders are short-range telescopic hydraulic cylinders to increase the rigidity and the wind wave resistance of the telescopic rods. The platform device solves the problem about control and adaptation of the tide level difference in the wave power generation process, effectively solves the problem that an existing power generating platform cannot change along with changes of the tide level and is suitable for a multi-pontoon power generating set of a high-power unit.