516 results about "Siltation" patented technology

The invention relates to a hydraulic model with the international patent classification (IPC) of E02B 1 / 02, in particular to a high sediment concentration waterflood river bed tearing simulation test method. The method utilizes a special test device and adopts flyash as model sand, wherein extremely fine flyash with a median diameter being smaller than 0.01mm is adopted to simulate an adhesive mud layer of deposits, fine flyash with a median diameter of 0.03mm is adopted to simulate suspended sand, and coarse particle flyash with a median diameter of 0.05mm is adopted to simulate loose bed sand. The invention provides a feasible test method for researching the problems of a river bed tearing phenomenon of the Huang river and the breaking of consolidation cohesive soil of the water conservancy industry, lays foundations for recognizing the generation mechanism of the river bed tearing phenomenon and establishing a scouring index of river bed tearing, and plays a certain active role in the development of the subject of river sediments.

The invention discloses a device for simulating the seepage and siltation of a sand layer, which comprises an upstream water storage tank, a water level control tank, an air-mixed water tank, a control water pump, a withdrawal water pump, a stirrer, an air bubble generator, a downstream water storage tank, digital cameras and a computer. The water level control tank is provided with the stirrer; the air-mixed water tank is provide with the air bubble generator; a water inlet and a water outlet of the inside of an experiment tank body are provided with a first filtering net and a second filtering net; a porous medium for experiment can be filled between the first filtering net and the second filtering net; the computer is connected with the digital cameras; and the first digital camera and the second digital camera are placed at two sides of the experiment tank body respectively. The experiment tank body is provided with a pressure measuring and sampling valve for measuring water pressure and sampling an aqueous solution and a porous medium sample. The device adopts two water pumps, can drive the water current to pass through the testing porous medium in the positive direction and the reverse direction, simulate the cleaning process of the reinjecting and lifting of well water and is favorable for researching the problems of the seepage and siltation of particles and air bubbles in a heat pump system of an underground water source.

The invention relates to a deposition and water level monitor and an application method thereof and belongs to the technical field of underwater deposition automatic monitoring in the water conservancy industry. According to the technical scheme, the deposition and water level monitor comprises a monitoring host (6) and a deposition and water level sensor (8), the deposition and water level sensor is in a strip shape, and a plurality of electrodes (7) are distributed in the length direction. The strip-shaped deposition and water level sensor is vertically and downwards arranged in the length direction, and the capacitance value of each electrode is measured; the deposition thickness is obtained in real time according to different capacitance values of all the electrodes and intervals between every two electrodes. By means of the deposition and water level monitor and the application method thereof, the water level and decomposition can be monitored at the same time, water surface and water bottom can be monitored at the same time, the decomposition thickness and the water level height can be monitored for a long time without manual intervention, then deposition rules of sludge and water level change situations are analyzed, and storage capacity or water flow is measured. The deposition and water level monitor and the application method thereof are high in accuracy, high in real-time performance, easy to arrange and small in later-period maintenance amount.

The invention discloses an in-situ remediation method for mining area watershed heavy metal pollution bottom sludge.The method includes the following steps that a slope wall is arranged; a bank side riverbed slope is leveled, and a layer of geotextile is laid on the bank side riverbed slope; the mining area watershed heavy metal pollution bottom sludge is obtained to be stirred and mixed with a heavy metal pollution restoration agent, and the mixture is laid on the geotextile and stabilized for a certain period of time to form a restoration bottom sludge layer; plants are planted on the restoration bottom sludge layer.By means of the method, on one hand, the problem of riverway pollution bottom sludge accumulation can be solved, and on the other hand, the problem of bottom sludge heavy metal pollution is effectively solved due to addition of a bottom sludge matrix restoration agent and combined planting of riverway plants.Besides, riverway landscape is attractive, and water quality is continuously and effectively improved.Plant intercropping is beneficial to restoration of bottom sludge polluted by heavy metal and stabilization of the slope, and soil and water loss is prevented.

The invention discloses a spiral-flow type hydraulically controlled rainwater intercepting and abandoning switch well system which comprises a spiral-flow type sand sediment trap and a rainwater intercepting trunk canal, wherein a rainwater inlet pipe for collecting rainwater in the spiral-flow type sand sediment trap, a rainwater outlet pipe which discharges rainwater primarily treated by the spiral-flow type sand sediment trap and an overflow pipe of a rainwater abandoned flow entering into the spiral-flow type sand sediment trap are arranged on the side wall of the spiral-flow type sand sediment trap. The installation position of the overflow pipe is higher than the installation positions of the rainwater inlet and outlet pipes. The water outlet of the rainwater outlet pipe is communicated with the rainwater intercepting trunk canal, and a water level control adjustable valve for controlling open and close of the water outlet of the rainwater outlet pipe according to the water level in the rainwater intercepting trunk canal is arranged on the side wall of the rainwater intercepting trunk canal. The spiral-flow type sand sediment trap can settle sand in rainwater entering into the spiral-flow type sand sediment trap to remove sediment and particle organic matters out of rainwater so as to reduce the environmental pollution caused by the abandoned rainwater and probable sedimentation of the trunk canal, caused by particles in the intercepted rainwater.

An overall wave suppression method on lake beaches characterizes that on the front wave beaten zone protective screens are set to reduce over 70% wave energy, at the same time wave asorption zones are set along the rigid lake bank to elimiante reflection waves to stabilize the near water to promote silt up of mud and sand and formation of shoals, reset up and forms natural ecological screens, the wave suppression devices are removed including a wood fence wave suppressing zone, a net flexible wave suppressing zone, an artificial wave suppressing zone before bank.

This is a kind of riverbed and seabed bedload withholding, silt promoting and anti-scouring device belonging to the water conservancy technologic field. The present invention includes: floating shade, floating body, sand permeating window and anchoring member. The floating body is equipped at the upper of the floating shade, the sand permeating window is equipped at the bottom of the floating shade, and the anchoring member is equipped at the lower part of the floating shade. The water preventing effect of the present invention is small, not flood detention, won't minify the moving motivity of silt, and won't change the original flowing direction. Therefore it will become a kind of effective silt promoting device with good flood preventing effect, little change of sideway flowing field, and without obvious partial scour.

The invention discloses a dredging robot and an application method thereof. The dredging robot comprises a vehicle, a working device and a lifting mechanism, wherein the working device is used for crushing and collecting silt, the lifting mechanism is used for movably regulating the work and mounting positions of the working device, the lifting mechanism is mounted at the front end of the vehicle, and the working device is movably mounted on the lifting mechanism in a matched manner; the front-end lateral wall of the vehicle is provided with a silt inlet, a conveying pipe is arranged on the rear-end lateral wall of the vehicle, a penetrating conveying pipe is arranged inside the vehicle, the front end of the penetrating conveying pipe is communicated with the silt inlet, the rear end of the penetrating conveying pipe is communicated with the conveying pipe, the front end of the silt inlet is communicated with the working device, and the conveying pipe is connected with a silt suction pump for sucking and conveying the silt. The dredging robot has the advantages that the robot can replace workers to perform dredging and can convey the silt out of culverts, sewers and open channels, intelligent and automatic operation can be achieved, and the robot is high in work efficiency and convenient to operate.

The invention relates to a riverway reservoir bank underwater terrain and sludge thickness survey system. The system comprises an unmanned ship system, a three-dimensional sounding side-scan sonar system, a portable multi-frequency depth finder, a shallow stratum profiler, a ground profile instrument, a wireless data transmission device and a multi-platform and multi-sensor development system integration and data processing platform. The three-dimensional sounding side-scan sonar system is used for simultaneously obtaining a 2D sonar image, a high-resolution 3D side-scan image and strip sounding data in one-time measurement navigation; the portable multi-frequency depth finder is used for pipeline route investigation and sedimentation condition investigation; the shallow stratum profiler can measure water depth data and shallow profile data, and profile display is carried out on a water bottom stratum; the wireless data transmission device is suitable for carrier-grade point-to-point network application; and the multi-platform and multi-sensor development system integration and data processing platform is used for realizing transmission communication of real-time data and constructing an underwater topographic survey network of the heterogeneous unmanned ship.

The invention discloses a construction and creation method of an indigenous mangrove protection forest on a foreshore unsuitable for afforestation. The method includes the steps: a, planting an annual seedling forest of sonneratia apetala on the heavy-wind-wave foreshore, unsuitable for afforestation, 15-20 meters from a coast to construct a mangrove protection wall resisting wind waves, wherein planting distance of the sonneratia apetala is 1-2m, and line spacing is 1-2m; b, after the sonneratia apetala forest is planted for 2-3 years, planting biennial indigenous mangrove species on a vacant lot of a sonneratia apetala planting field, wherein planting distance of the indigenous mangrove species is 0.5-1m, and the line spacing is 0.5-1m. Exotic species and the indigenous species of mangroves are created on the heavy-wind-wave foreshore unsuitable for afforestation, restored mangrove wetland has rich biologic diversity and a good ecological function, coastal landscape is improved significantly as compared with that of a traditional forestation method, respective benign growing environment of the exotic species and the indigenous species is maintained, and normal growth of the indigenous species is unaffected; meanwhile, the indigenous mangrove protection forest has good wind wave resistance and functions of dam protection, siltation promotion and the like.

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 provides a drainage structure for controlled drainage of a tunnel and a tunnel drainage system with the same. The drainage structure for controlled drainage of the tunnel comprises two drain pipes, wherein the two drain pipes are connected and the diameters of the two drain pipes are different. The diameter of the drain pipe A is smaller than the diameter of the drain pipe B. One end of the drain pipe A is sealed, and the sealed end of the drain pipe A stretches into the drain pipe B. The drainage structure further comprises a spring, the spring is fixedly connected with the bottom of the sealed end of the drain pipe A, a sluice valve block matched with the cross section of the drain pipe A in size is arranged at the movable end of the spring, a plurality of water outlets are formed between the bottom end of the drain pipe A and the sluice valve block, and the sluice valve block is connected into the drain pipe A in a sliding mode through a plug. The drainage structure and the tunnel drainage system with the drainage structure are simple, have the moderate drainage effect, can further ingeniously eliminate calcium crystals (or suspended sediment) adhering to the inner portions of the drain pipes, and are high in operability, wide in practicability and capable of effectively promoting the development of drainage systems of tunnels which are high in ecological system requirement or tunnels in limestone areas.

The invention discloses a desilting canal, and belongs to the technical field of sediment treatment in hydraulic engineering. The desilting canal comprises a water inlet canal, a bend, a sediment transport corridor, a rotational flow desilting basin and a water outlet canal, wherein the upstream part of the bend is connected with the water inlet canal; the downstream part of the bend is connected with the water outlet canal; a central angle of the bend is 270 degrees; the water outlet canal passes through the lower side of the water inlet canal; a circular-arc-shaped overflow baffle is arranged in the bend; the bottom position of an inner side wall of the bend is provided with a narrow slit; the sediment transport corridor is positioned below the bend, and is communicated with the bend through the narrow slit; the tail end of the sediment transport corridor is connected with the rotational flow desilting basin. The desilting canal occupies a small area, can be arranged close to a canal head, and can be used for effectively remove coarse silt, so that the problems of difficulty in land acquisition for building the desilting basin at a position far away from the canal head in an irrigated area, easiness of siltation in long-distance transport of coarse silt, and the like are solved.

The invention relates to a pipeline dredging and desilting method, and relates to the technical field of pipeline dredging. The method comprises the following steps: S1, conveying a desilting device to a specified position in a pipeline, wherein the desilting device is used for cleaning sediments on the inner wall of the pipeline; the desilting device comprises a moving mechanism walking in the length direction of the pipeline, a scouring mechanism arranged on one side of the moving mechanism and used for scouring the inner wall of the pipeline, and a silt scraping mechanism arranged on one side of the moving mechanism and used for scraping silt on the inner wall of the pipeline; S2, starting the scouring mechanism so as to scour and loosen silt on the inner wall of the pipeline; S3, starting the silt scraping mechanism, and scraping off loosened silt on the inner wall of the pipeline through the silt scraping mechanism; and S4, removing the desilting device, and removing silt scraped off from the interior of the pipeline. The pipeline dredging and desilting device has the effect of reducing the pipeline dredging difficulty.

The invention discloses a method for improvement and protection of a spur dike channel of a mountain river. The method comprises the steps that (1) the channel improvement water level and the channel improvement line width are determined according to the direction of the channel, the planned line form, the hydrological characteristics of the river, the riverbed components and the erosion and deposition evolution characteristic, and (2) the position and the length of a spur dike are determined according to the shipping hindering characteristic of a dangerous shoal and the improvement line width. The method for improvement and protection of the spur dike channel of the mountain river is characterized by further comprising the steps that (3) a dike body structure is laid, wherein a layer of block shaped like the twisted Chinese character 'Wang' is laid on the downstream slope of a dike body; (4) the bottom of the head of the dike is protected; (5) the bottom of the root of the dike is protected; (6) a bank protection structure is arranged. The method is particularly suitable for improvement and protection of the spur dike channel of the mountain river, the strength of the root of the dike and the strength of the head of the dike can be improved, stronger current impact force can be resisted, the overall service life is prolonged, and the method has the advantages of being capable of preventing sediment accumulation, stabilizing a riverbed, protecting the ecological environment and achieving safe flood discharging.

The invention provides a method for reconstructing terrains above a dry water level of a beach based on time sequence satellite remote sensing data and water level monitoring data, mainly aiming at the river beach of which the area is greatly changed along with the water level in the year. A river beach boundary line of a time sequence is extracted from an ESA / Sentinel2 remote sensing image, waterlevel observation data of nearest hydrological stations at the upstream and the downstream of the beach at corresponding time are automatically captured, the elevation of a beach water line or elevation information of each feature point of the beach water line is obtained, and terrains above the self-dry water line of the beach are established through spatial interpolation. Under the condition that field measurement is not carried out, existing satellite remote sensing data and water level monitoring data are fully utilized, the invention is suitable for the beach with the area obviously changed due to the influence of water level changes, the beach terrains above the dry water line are established, and the invention has great significance in scour silting analysis, protection, development and utilization of the beach.

The invention relates to an electronic bathymeter, which is characterized by comprising a pole and a data collector, wherein the lower end of the pole is shaped like a sharp angle; two soil pressure measurement units and an infiltration pressure measurement unit are arranged on the side wall of the pole at intervals; after being connected in parallel by a cable, the output ends of the two soil pressure measurement units and the infiltration pressure measurement unit are connected to the input end of the data collector; and the data collector is used for measuring the pressure acting on each pressure measurement unit, thus not only realizing real-time monitoring of the scour depth and the maximum scour depth of the measured seabed and riverbed, but also measuring the back siltation process. The electronic bathymeter can be extensively applied to measuring the scouring conditions of the riverbeds or seabeds around various building structures.

The invention discloses a debris flow siltation and overflow scope boundary defining method and a danger zoning method, and aiming at the defect that a danger range division method for a conventional accumulation fan area needs to take a great amount of observation data in a prior period or a large-scale topographic map as the basis and then application is limited, the invention provides a danger zoning method for a debris flow accumulation fan. According to the method, average flow depth of gully peak flow is taken as a special index to determine that the maximum average flow depth on a main gutter channel of the accumulation fan area is accorded with an assigned overflow cross section position of the special index, and the distribution change and topographical change characteristics of the geographical position of the assigned overflow cross section are used to determine the siltation and overflow scope boundary of the debris flow. The invention further provides a danger zoning method of a siltation and overflow area, which is implemented based on two parameters and syntagmatic relations of the two parameters including the average flow depth and the mean velocity of the debris flow of the assigned overflow cross section. According to the methods, principles are reliable; a computational process is scientific, simple and convenient; the large-scale topographic map and a great amount of historical observation data are not required to be taken as the basis; and the practical application and popularization value is high.

The invention discloses a method of effectively using lake sediment and industrial and agricultural waste coal slag as compost. The method comprises the following steps: screening coal slag into two particle sizes by utilizing a sieve; when filling the coal particles into a pot, laying large-size particles (2-5 cm) on the bottom of the pot firstly, and the filling small-size particles (0-2 cm) on the large-size particles, thereby preventing water accumulation on the bottom of the pot, keeping favorable air permeability and being beneficial to the growth of the plant root system; and finally, laying lake sediment as the upper layer, thereby providing nutrients required by plant growth. The invention solves the problem that excessive sediment siltation can accelerate lake swampiness, effectively utilizes rural waste and does not need power equipment and capital investment, thereby being beneficial to popularization and implementation.

A stone cage check dam used for mountainous area erosion gully control comprises cement piles. The stone cage check dam is characterized in that a cylindrical cage is formed by a wire net which is formed by galvanized iron wires in a staggered weaving mode, and rock blocks are placed into the cylindrical cage; a gully bottom base is excavated from the center line of a gully bottom downwards, multiple layers of stone cages which are overlapped are horizontally paved inside the base, a layer of stone cage is vertically paved on the upper portion of the base, and all the stone cages are connected through iron wires; a row of cement piles which are embedded into the gully bottom are respectively arranged on the two sides of the multiple layers of stone cages which are horizontally paved, a plurality of stone cage check dams are arranged along the erosion gully, and the distance between every two stone cage check dams satisfies the requirement that the bottom portion of the prior stone cage check dam is at the same height as the top portion of the next check dam. The stone cage check dam can realize mountainous area erosion gully control, is not limited by water flow speed, gully sand content, gully widths, gully erosion types and the like, can prevent gully head advancing, gully shore expanding and gully bend sapping and realize comprehensive control over erosion gullies, has the advantages of being strong in water permeability, high in stability, long in service life, low in cost and the like, and not only solves the problem of water and soil loss of the mountainous area erosion gullies, but also enables the gullies to deposit to form terraces, so that the area of available land is increased, and conditions are provided for agriculture and forestry production.

The invention relates to a siltation reduction method for a reservoir, and belongs to a general method in the field of water conservancy. The IPC of the siltation reduction system is E02B1 / 00 and E02B9 / 02. According to the method, a submerged sediment control dam is built in the reservoir to divide the reservoir into a clear water reservoir region and a muddy water reservoir region, a sand conveying culvert is adopted to discharge water flow containing sand far away from the upstream of the dam out of the reservoir, dual purposes of water storage of the reservoir and sand discharging are achieved, and the reservoir precipitation erosion distance is widened; tiny particle silt turning over the submerged sediment control dam to the reservoir region in front of the dam is discharged out of the reservoir through dam flood discharging tunnels in a submersible sand pump reservoir dredging manner; and for wide, shallow and curved deposition forms in the watercourses of the reservoir regions, smooth and straight reservoir river channels beneficial to density flow transport are built in a submersible sand pump sand-excavating dredging manner, and the natural sand discharging effect is improved. The siltation reduction system is suitable for heavy sediment-laden river reservoir building and deposited waste reservoir reformation engineering.

The present invention belongs to the field of ecological engineering technology, and is ecological engineering method of controlling Spartina alterniflora, which, as one kind of exotic species, has the positive effects of protecting shoreline and promoting siltation to create land while possessing negative effects of affecting biodiversity and aquatic culture. The ecological engineering method of controlling Spartina alterniflora is superior to available mechanical eliminating method, herbicide method and biological method, and has no ecological risk, developed biological control and great economic benefit.

The invention relates to a large-gradient gravel river bank protective structure and a river washout-resistant controlling method thereof. The river washout-resistant controlling method comprises the following steps of: determining a river width based on a planned line shape according to the river characteristics; determining a bank protective form according to a flood control standard; determining apron burial depth and laying width according to flow quantity and riverbed composition; designing the dimension of the bank protective structure according to the property and the height of filling soil; then excavating the riverbed along a vertical direction and a horizontal direction together; then respectively constructing vertical bank protective structures at both sides of the riverbed; also arranging presetting holes on the vertical bank protective structures; constructing aprons along the horizontal direction on both ends of the bottom of the riverbed, wherein one ends of the aprons are inserted into and fixedly connected with the presetting holes of the vertical bank protective structures positioned at corresponding sides; finally backfilling to the height of an original riverway on the aprons, and backfilling to preset height at both sides of the bank protective structure. The invention achieves the effects of basic balance of riverbed siltation erosion and fast flood discharge, plays a submission role on water flows, not only reduces the impact force of the water flows on a river levee, but also enables silt to be taken away by the water flows, thereby preventing river sand from blocking the riverway due to sedimentation.

The invention provides a method and experiment apparatus for analyzing drainage pipeline siltation characteristics. The apparatus comprises a reservoir, a constant flow water tank, a test pipeline and a water outlet tank. The reservoir supplies water for the constant flow water tank through a reflux pump; water in the constant flow water tank flows into the water inlet of the test pipeline with a preset constant flow rate; the water outlet of the test pipeline is intercommunicated with the water outlet tank; the test pipeline is provided with a plurality of water level monitoring vertical pipes; the slope of the test pipeline is adjustable; the test pipeline is internally provided with a barrier for simulating siltation. The method comprises determining a first hydraulic slope of a first monitoring position and a second monitoring position without the barrier, and a second hydraulic slope with the barrier; determining a pipeline siltation index according to the first hydraulic slope and the second hydraulic slope to obtain a single experiment array which comprises parameters including pipeline slope, water flow velocity, barrier specification and position and pipeline siltation index; and repeating the steps to obtain a plurality of single experiment arrays to construct a drainage pipeline siltation characteristic curve.

The invention provides a method for analyzing the whole process of soil slope landslide. According to the method, an ideal elastic-plastic solid model is adopted when the soil slope is in a small deformation state, so that the method can be suitable for stability analysis, and the model is automatically converted into a Bingham fluid model after the soil slope is unstable to generate a landslide,so that the method can be suitable for large deformation analysis of the landslide. The whole process analysis of the soil slope from stabilization to critical instability to instability sliding to final sedimentation is realized.

The invention relates to the technical field of river channel dredging, in particular to a river channel dredging method which comprises the following steps: dividing a riverway to be cleaned into cofferdams, and dredging the riverway in a segmented manner by adopting a cutter suction pumping mode and a hydraulic flushing and digging mode; then subjecting the cleaned muddy water sequentially to preliminary precipitation, sorting and flocculent precipitation to obtain purified sludge; finally, dehydrating and sun-drying the purified sludge in sequence, and backfilling a mud cake after sun-drying. According to the river channel dredging method, the physical and chemical combined treatment process is adopted and are ingeniously combined, so that the arsenic, copper, chromium and other heavy metal ions in the bottom mud can be effectively treated, harmless and resourceful treatment of the bottom mud is achieved, secondary pollution caused by discarding of the bottom mud without treatment can be prevented and the bottom mud can be effectively utilized; therefore, flood discharge and dredging capacity of the riverway is enhanced, the problem that silting pollution of the riverway is difficult to dispose is solved, and the purposes of pollutant reduction, stabilization, harmlessness and recycling are achieved.

The invention discloses a method for diagnosing the operation state of a drainage system based on liquid level monitoring, and belongs to the technical field of drainage system operation state diagnosis. The method comprises the following steps that (1) optimally arranging liquid level monitoring points, and dividing a drainage system into a plurality of drainage subareas by taking the liquid level monitoring points as boundaries; (2) collecting and preprocessing the collected drainage pipe network liquid level monitoring data; (3) taking the preprocessed liquid level monitoring data as an input condition, and calculating a pipeline flow value through a Manning formula or solving a Saint-Venant system of equations; (4) checking the flow of the pipeline by using a portable flow meter, and determining the silting degree of the pipeline; and (5) calculating the sunny day average flow, the groundwater infiltration amount and the domestic sewage mixed connection amount of each drainage subarea based on the checked pipeline flow, and carrying out detailed investigation on areas with serious groundwater infiltration and serious domestic sewage mixed connection. The method is higher in diagnosis efficiency, wider in application range and universally applicable to drainage systems of large cities in China.

The invention discloses an intelligent drainage system and method for a transformer substation. The system comprises a water pumping device, a water level monitoring device, a sludge detection device,a rainfall monitoring device and a controller which are installed in a cable trench. The water pumping device is used for pumping accumulated water in the cable trench and is electrically connected with the controller; the water level monitoring device is used for monitoring the water accumulation condition in the cable trench and is electrically connected with the controller; the controller is used for processing feedback information of the water level detection device and controlling starting and stopping of the water pumping device and is in communication connection with the remote terminal; the rainfall monitoring device is used for monitoring environment rainfall and is electrically connected with the controller; and the sludge detection device is used for monitoring the sludge deposition condition at the bottom of the cable trench and is electrically connected with the controller. According to the device, the sludge deposition condition in the cable trench is considered; the vibration device, the transmission device and the stirring device are arranged, so the measurement accuracy of the water level gauge and the water pumping efficiency of the water pumping device are guaranteed.

The invention discloses a lower flap gate provided with an automatic sewage disposal device, which comprises a gate plate, wherein the bottom of the gate plate is connected with a gate bottom sill arranged in a riverway through a supporting hinged shaft; a connection lifting lug arranged at the upper part of an upstream face of the gate plate is connected with an expansion rod of a hydraulic hoist placed at the top of a gate pier; the bottom of the upstream face of the gate plate is connected with a sewage disposal plate through a movable hinged shaft; the sewage disposal plate extends to the upper surface of the gate bottom sill; and the width of the sewage disposal plate is matched with the width of a gate hole of the riverway. The sewage disposal plate is formed by combining a plurality of parallel steel plates; and the front end parts of the steel plates are provided with oblique plane cutting edge structures. The lower flap gate has the advantages that the lower flap gate is simple in structure and ingenious in conception; a dead angle at an intersection (namely the gate bottom sill) between a downstream bottom face of the riverway and the gate plate is blocked off by utilizing the sewage disposal plate connected with the bottom of the upstream face of the gate plate in a hinged manner, so that the problem of silting of sediment at the bottom of the gate is solved thoroughly; complete gate closure and in-place water shutoff are ensured; and water leakage of the gate does not appear.