101results about How to "Does not affect navigation" patented technology

The invention relates to a construction method for integrally sliding a large-span steel pipe arch of a curved bridge, belonging to the field of bridge engineering construction. The method comprises the following steps: firstly, carrying out on-site splicing and welding on the manufacturing and installing sections of a steel pipe arch to form a large hoisting section; then installing a temporary arch-splicing support on a bridge-site longitudinal splicing site position, arranging arch ribs on the temporary arch-splicing support, and adopting an arch springing restraint device to preload arch springings after finishing splicing the steel pipe arch, thus enabling the steel pipe arch to form a stressed entirety; and finally, dismantling the temporary arch-splicing support, and adopting a pushing power system to realize integrally sliding the whole steel pipe arch into a proper position. The construction method of the invention has the advantages of small site occupation, integral hoisting of large sections, less hoisting subsection and less arch-splicing support amount, thus the construction cost is economical, the high-altitude welding quantity is less, the welding quality is ensured, the arch axis linetype control is easy, the steel pipe arch splicing and a concrete beam can be simultaneously constructed, arch splicing is carried out on an ectopic bridge site, the underbridge navigation is not influenced, the construction is safe and the construction progress can be quickened.

The invention relates to erecting construction of a steel pipe concrete arch bridge, especially a door crane-used half-arch integral steel pipe arch hoisting process, dividing each arch rib into two hoisted units, where each 1 / 2 arch is hoisted by two door cranes, where a fixed door crane serves as an arch span hoister and an active door crane serves as an arch foot hoister. And the invention is applied to bottom, middle and top bearing arch bridges constructed by bracket-free process. And the span of the steel pipe arch installed by the invention can reach above 300 meters, and the weight of the installed steel pipe can reach above 2000 tons. And it does not influence navigation, able to applied to single- or multiple- span construction; the hoisting safety is higher; and the shape of the arch axis is good; it needs no huge anchoring system and applied to various arch bridges.

The invention discloses a black and odorous river regulating and recovering method which includes the following steps that firstly, dirt stopping and discharging of a river are performed; secondly, desilting of the river is performed; thirdly, paying-off is measured; fourthly, slope surface finishing is performed; fifthly, a plant pad is paved; sixthly, irrigation is performed; seventhly, the river is managed and maintained by manual work for one year. The black and odorous river regulating and recovering method can effectively regulates the conditions that the river is black and odorous and a water body is deteriorated, the quality of water is purified fundamentally, and a novel water body ecological system is formed. In addition, the water body can have self-growing and self-purifying capacities, and the water body can reach the standards of water of the fourth kind. Meanwhile, stability of slope bodies of the two sides of the river and conservation of water and soil are achieved, the environment is effectively renovated, after manual management and maintenance are removed, the functions of the black and odorous river regulating and recovering method can be continued, the functions of discharging dirt, preventing flood, ensuring navigation, draining flood and the like are not affected, and greening and beautifying of the urban landscape can also be effectively enhanced.

The invention discloses a constructing method of a through steel box arch bridge. Construction is conducted in the sequence of arches first and then beams, and the method includes the main bridge starting section construction process, the support area main beam construction process, the support area arch rib construction process, the cantilever area arch rib construction process, the hanging rod construction process, the cantilever area main beam construction process, the bridge deck slab construction process and the system conversion construction process. Cable hanging construction is adoptedfor the cantilever area arch rib construction process and the cantilever area main beam construction process. By means of the construction method, the construction period can be effectively shortened, the work efficiency is improved, it is ensured that the bridge profile conforms to the design and standard requirements, risks can be reduced, and the potential safety hazards of upstream power station discharged flood and rainy flood season flood on temporary supporting piers and other structures at the center of a riverway are reduced to the maximum extent.

The invention provides a walking type jacking construction method and device for large-span reinforced concrete combined beams. The walking type jacking construction method comprises the following steps that temporary piers are arranged between all main piers of a bridge girder; a jacking device and two bearing beams are installed on each temporary pier, wherein each jacking device is arranged between the corresponding two bearing beams; the reinforced concrete combined beams are arranged on the bearing beams of the temporary piers; the jacking devices carry out upward jacking in place and make contact with the bottoms of the reinforced concrete combined beams; the jacking devices continue to carry out upward jacking, jack the reinforced concrete combined beams and break away from the bearing beams; the jacking devices are pushed forward and drive the reinforced concrete combined beams to move forward by a set stroke; the jacking devices descend so that the reinforced concrete combined beams can be arranged on the bearing beams of the temporary piers in a supporting mode again; the jacking devices continue to descend to the initial positions and are pushed backwards to the initial positions, so that a jacking stroke is finished; the above steps are conducted repeatedly until construction of the whole bridge girder is completed. According to the walking type jacking construction method and device for the large-span reinforced concrete combined beams, manpower, material resources and financial resources are saved on the premise of guaranteeing the construction period; meanwhile, the walking type jacking construction method and device for the large-span reinforced concrete combined beams have the advantages that construction and operation are convenient, safety and reliability are realized, efficiency is high, the construction period is short, and the comprehensive cost is low.

A method for treating water quality of a black-odor river channel comprises the following steps, (1) determining river-water oxygen-dissolving amount X mg / L; (2) placing a bottom material scavenging agent mg / L in the river channel; (3) spraying a photosynthetic bacterium environment scavenging agent in the river channel; and (4) placing polyaluminium chloride and microbial flocculant in the river channel. The bottom material scavenging agent is a mixture of calcium peroxide and oxalic acid. The method for treating the water quality of the black-odor river channel is simple, can effectively restrain upward floating of bottom mud of the river channel, eliminates odor, effectively removes COD, NH3-N and total phosphorus in the river and greatly improves transparency of the river water. Besides, flood control and navigation of the river channel are not influenced, emergency preparation time is little, and chemicals take effect in 1-2 days after applied.

The invention discloses a chaos spreading spectrum underwater acoustic communication method. The chaos spreading spectrum underwater acoustic communication method includes that step 1, converting Bn into a square wave signal u0, wherein the lasting time of each code element of the square wave signal is Tb; step 2, using a chaos signal u generated by a hybrid system as a chaos spreading spectrum sequence; step 3, multiplying u0 of the step 1 by the u of the step 2 to obtain a spectrum spread signal u1; step 4, adding synchronization information to the signal u1 to obtain a finally emitted signal u2; step 5, using a matching filter at the receiving end, wherein the output signal of the matching filter is u4; step 6, detecting the output signal u4 at a special time, and judging the symbol; step 7, multiplying the judged symbol value corresponding to the synchronization information corresponding to each binary information by the judged symbol value of the corresponding spreading spectrum signal section to obtain the sent binary information. The chaos spreading spectrum underwater acoustic communication method is good in security and high in precision.

A preparation method of the damage of the protection slopes of underwater concrete slabs is applicable to the preparation of the damage of the protection slopes of the underwater concrete slabs of waterways, dikes, dams, bank slopes, etc. In the method, underwater detection is carried out, mould bags with a suitable size are customized according to the position and the shape of a damage hole, mould bag concrete is positioned and casted, after the mould bag concrete blocks the damage hole, an infusion hole and a water outlet are bored at proper positions above the damage hole, a duct is applied to infuse underwater non-dispersible concrete from the infusion hole, the self-compaction and anti-dispersibility of the underwater non-dispersible concrete is utilized to fill up the cavity, seeper is drained out of the water outlet, consequently, the cavity is filled up, and the rupture and the collapse of the damaged slab can be prevented. The present invention does not need to build a cofferdam, underwater human operation is relatively less, engineering quantities and construction difficulties are reduced and the cost is decreased; because the underwater non-dispersible concrete is utilized in the concreting construction, the construction is safe and the water body is not polluted; a waterway is not needed to be closed up, so navigation is not affected.

The invention provides a fairway wave observation system, which comprises the vertical movable track measuring module composed of the vertical speeding sensor and twice integral circuit, the pressure wave measurer, the central processor, the standard RS232 interface, the data memorizer, the real-time clock, the mobile communication module, the LED displayer and the computer terminal. The central processor and the vertical movable track measuring module are equipped on the floating carrier. The pressure wave measurer is hung up the underwater of the said floating carrier. The speeding sensor measures the acceleration of the vertical movement of the floating carrier; obtain the vertical moving track of the light boat through the twice integral circuit; the pressure wave measurer measures the wave surface track opposite to the floating carrier; the central controller composes the vertical moving track and the wave surface track to get the wave height and the period.

The invention discloses a repairing method for adding a liner on an underground pipe. The repairing method comprises the following steps: (1) operation pits are dig at two ends of a pipe required to be repaired; (2) the old pipe is cut off in the positions of the operation pits; (3) a new pipe with a proper outer diameter is selected; and adhesive is coated on the outer wall of the new pipe; (4) the new pipe serves as the liner to penetrate in the old pipe; and (5) the adhesive is cured to bond the outer wall of the new pipe with the inner wall of the old pipe. The method has the advantages of no influence on road traffic and river navigation in operation, no environmental damage, short construction period and effective saving of engineering investment; in addition, the adhesive is coated on the outer wall of the new pipe before the new pipe penetrates into the old pipe, and the adhesive is cured after the new pipe penetrates into the old pipe, so that the outer wall of the new pipe and the inner wall of the old pipe are tightly bonded to enable the new pipe and the old pipe to be connected as a whole; the whole new pipe realizes uniform pressure bearing; and the pressure bearing capacity of the new pipe is effectively improved when the pipe repairing is finished.

The invention relates to a sewage stopping and cleaning device, and belongs to the technical field of environmental protection equipment. The sewage stopping and cleaning device comprises a grate body, the bottom of the grate body is connected on a bottom shaft, two ends of the bottom shaft penetrate through retention walls arranged on two sides of a river channel and stretch into drive chambers, a drive device which drives the bottom shaft to rotate is arranged in at least one drive chamber is provided with, guide rails are correspondingly arranged on the grate body and in the drive chambers, the guide rails are divided into fixed sections on two sides and movable sections in the middle, the fixed sections are installed in the drive chamber, the movable sections are arranged on the grate body, a sewage cleaning car is arranged on the guide rails in a matched mode, a sewage cleaning bucket is connected on the sewage cleaning car through a lifting mechanism, the sewage cleaning bucket is arranged on one side of the upper reaches the river channel, a cleaning conveying chamber is arranged on the side face of any drive chamber, and the guide rails extend above the cleaning conveying chamber. When the sewage stopping and cleaning device works, the sewage cleaning bucket moves on the guide rails, collects rubbish which comes from the upper reaches, and conveys the rubbish to the cleaning conveying chamber. The sewage stopping and cleaning device can fast and efficiently clean the rubbish in the river channel, is high in working reliability, does not influence boat sailing and floodwater diversion, and can be applied to rubbish cleaning in various river channels.

The invention discloses a main beam cable-stayed suspension forming technological method for a self-anchorage type suspension bridge. The main beam cable-stayed suspension forming technological method comprises the steps that (1) a bridge foundation, bearing tables, bridge piers, a bridge tower and side span cast-in-situ sections are constructed in sequence; (2) a main beam and temporary stay cables are installed section by section in sequence in the direction from the part close to the tower to the midspan until all main beam sections are installed; (3) all the main beam sections are combined to form the integral main beam, an anchorage channel and a main cable are installed, the cable is tightened, and cable clips are installed; (4) slings are installed in the direction from the part close to the tower to the midspan in sequence and tensioned, the corresponding temporary stay cables are demounted at the same time, the system transformation to a sling system from a temporary stay cable system is completed in the demounting process of the temporary stay cables, and the suspension cable force of the temporary stay cables is transformed into the cable force of the slings; (5) auxiliary works are completed, the force of the slings is adjusted, the whole main beam is formed, and the bridge can be handed over for traffic operation after the main beam is formed. According to the technological method, temporary bridge piers do not need to be arranged, navigation is not influenced, the construction cost is greatly reduced, and safety is improved as well.

The invention discloses a water conservancy project intelligent regulation control system and regulation control method for guaranteeing water supply safety of a river mouth. The system comprises an environment element in-situ monitoring module, an environment element information management control module, an upstream remote regulation control module and a downstream local intelligent emergency module, wherein the environment element in-situ monitoring module is used for monitoring hydrology, water power and water environment elements of key positions of an upstream reservoir and a downstream river mouth in real time; the environment element information management control module is used for managing and controlling hydrology, water power and water quality element information of different sources and different types; the upstream remote regulation control module is used for implementing long-distance accurate optimization scheduling on the upstream reservoir in a water supply safety sensitive period of the river mouth to improve overall water supply safety of the downstream river mouth; and the downstream local intelligent emergency module can implement targeted emergency measures in the downstream local position through intelligent response for the implementation effect of the upstream remote regulation control module to ensure water supply safety of emphatically protected water areas of the river mouth.

The invention provides a shallowly-submerged floating type horizontal axis current power generation system with a flow guide cover or flow guide covers and belongs to the ocean current energy development technical field. The shallowly-submerged floating type horizontal axis current power generation system is of an array structure which is formed by one or more than one current power generation device; every current power generation device comprises a power generation mechanism and a floating body mechanism, wherein the power generation mechanism is arranged inside a flow direction adaptive flow guide mechanism and the floating body mechanism is connected with the flow direction adaptive flow guide mechanism; every floating body mechanism comprises a floating ball and a wing-shaped floating body which are arranged at the top of the bottom of the corresponding flow direction adaptive flow guide mechanism respectively; every flow direction adaptive flow guide mechanism comprises the glow guide cover, turbine blades and a streamlined cabin, wherein the flow guide cover faces the direction of the ocean current and the turbine blades and the streamlined cabin are arranged in the flow guide cover in turn. According to the shallowly-submerged floating type horizontal axis current power generation system with the flow guide cover or covers, the power generation can be driven by the kinetic energy of the ocean current, the shallowly-submerged floating type horizontal axis current power generation system is suitable for the stable ocean current and sea condition, the energy conversion rate is high, and one to three megawatts every hour of power can be generated after the shallowly-submerged floating type horizontal axis current power generation system is placed in the two to three meters every second of flow rate of ocean and the appropriate blade diameter is designed.

The invention discloses a ship-borne hazardous article container wireless monitoring device with an underwater positioning function and a method thereof. The device comprises a battery power supply unit, an attitude sensor, a cargo detection sensor set, a water falling detection sensor and an embedded microprocessor. When the embedded microprocessor is in an initial power-on state or does not receive a water falling state signal, a semiconductor switch is controlled to supply power to a radio frequency communication unit so that the device is enabled to be in a radio frequency communication mode, and all the acquired measuring signals are transmitted to a background monitoring center via the radio frequency communication unit; and when the water falling state signal is received, the semiconductor switch is controlled so that the device is enabled to be in an underwater acoustic communication mode, an underwater positioning signal is transmitted via an underwater acoustic signal transmit-receive interface circuit and an underwater acoustic energy converter, and underwater state information of a container is transmitted according to requirements. The ship-borne hazardous article container wireless monitoring device with the underwater positioning function is small in space occupation without influence on navigation and accurate in positioning, and can conveniently acquire container underwater attitude and the underwater state information of container hazardous article cargos.

The invention relates to a method for designing and refreshing set-top box picture advertisement, in TV single-direction broadcast network. Wherein, it comprises EPG produce server, sender, digit TV network, remote controller, set-top box, and TV; it designs serial number of available page of EPG interface, while the produced image data is in available range, to be correlated with serial number of displayed interface and defines its displayed position. The invention is characterized in that it makes the data into TS dataflow with special PID format to be transmitted with program single dataflow; the analyze module of terminal EPG application program extracts BMP image data, to display it at appointed position of appointed page of correlation. The invention will not affect itself navigate function, with advertisement effect, without inserting advertisement in video program.

The invention provides a construction method of an airship hauling pilot rope technology. A rope throwing hammer and a hauling device are arranged a light airship, a winch and a rope unwinding frame wound with a light fiber rope are arranged at the top of a bridge tower A, a winch and a three-phase limiting guide wheel are arranged at the top of a bridge tower B, winches are respectively arranged at the anchorage positions of the bottoms of the bridge tower A and the bridge tower B, and construction workers carrying interphones are allocated for the bridge towers. The construction method of the airship hauling pilot rope technology is characterized in that the light fiber rope is fixedly connected with a steel wire transition rope and a hauling rope, the light fiber rope is formed by sequentially connecting 2mm of Deenyma rope, 3mm of Deenyma rope and 13mm of Deenyma rope, and a connecting method comprises the steps of measuring wind direction and wind speed, placing a checkmark flag, hanging a pilot rope, hauling the pilot rope and displacing the pilot rope. The construction method has the advantages of being large in spanning capacity, quick in construction speed, free of influence on navigation, small in safety risk, low in cost and small in field requirement, is simple, convenient and flexible, requires few labors and devices and has wide popularization and application value.

The invention discloses an active protective device for preventing a bridge form the collision of a ship, and belongs to the technical field of roads and bridges. The active protective device consists of an alarm and control unit (18), a mechanical transmission system, a bottom plate, energy-absorbing blocks and a rubber buffer block (7), wherein the alarm and control unit (18) transmits a signal to a gas generator to inflate an inflatable gasbag (6) so as to float up the bottom plate as well as the mechanical transmission device and the energy-absorbing blocks on the bottom plate; the alarm and control unit (18) transmits a signal to a hydraulic motor (8) of the mechanical transmission device and a latch control device so as to enable the rubber buffer block (7) to move forward and change the energy-absorbing blocks arranged on the bottom plate from one row into three rows. The active protective device reduces the occupied space of a collision-preventing device in a navigable region, enhances a collision-preventing and energy-absorbing effect, and achieves the advantages of replaceable energy-absorbing block units and restorable deformation of the buffer block and the like.

The invention belongs to the field of underwater unmanned navigation, and particularly relates to an ocean current power generation device suitable for an underwater unmanned vehicle. According to theocean current power generation device suitable for the underwater unmanned vehicle, a hydraulic power generation device is installed on the tail part of the underwater unmanned vehicle to charge theunderwater unmanned vehicle, blades of the hydraulic power generation device can be driven to rotate by the ocean current, so that an electric generator is driven to generate electric energy and the electric energy is stored in a storage battery, working requirements of the underwater unmanned vehicle are fully met, and the purpose of permanent continuation of the navigation is achieved; the underwater unmanned vehicle can meet electric power required by ocean going detection through the added hydraulic power generation device; when the underwater unmanned vehicle carries out fixed-point detection, the underwater unmanned vehicle can be charged by using the hydraulic power generation device at the same time; the hydraulic power generation device is installed on the tail part of the underwater unmanned vehicle, and the occupied inner space of the underwater unmanned vehicle is small; and the blades of the hydraulic power generation device can be contracted to be attached to the underwater unmanned vehicle, so that the hydraulic power generation device does not affect the navigation and the navigational speed of the underwater unmanned vehicle.

The invention discloses a device for collecting wave energy by using wave flowing water pressure and belongs to the technical field of fluid machines for energy collection, energy conversion and efficient wave energy utilization. The structure comprises a rigid piston, multi-stage hydraulic collection cylinders, check valves, a loop pipeline, a turbine generator, a spraying pipe and an energy accumulator. The multi-stage hydraulic collection cylinders are connected in series, and the corresponding check valve is arranged between every two hydraulic collection cylinders; the hydraulic collection cylinders on the two sides of the system communicate with each other through the loop pipeline; the loop pipeline is sequentially provided with the energy accumulator, the spraying pipe and the turbine generator in the flowing direction of work liquid; and the work liquid flows out of the hydraulic collection cylinder on one side of the system, the hydraulic energy is collected after the work liquid passes through the energy accumulator, the work liquid reaches the turbine generator, and the wave energy is converted into the electric energy. The device for collecting the wave energy by usingthe wave flowing water pressure overcomes the defect of traditional low-efficiency wave energy collection, the device is placed on the seabed, water surface navigation is not affected, the structureis simple and reliable, the seabed wave load is small, and structural damage is not likely to be caused.

This is a two sectional removable spare dam with drain slot on plates and an alarm system. In case of dam break, the alarm system on the spare dam alarms for evacuation and the plates are closed for slow drain via the slots to decrease lost.

The invention belongs to the technical field of bridge wind-induced vibration control, and provides a heaving plate device for restraining flutter of a bridge. A heaving plate immersed and suspended in water is suspended on a main beam of the bridge through a long rope. When the bridge vibrates drastically due to wind, the heaving plate in water can be driven to move up and down, the heaving plateand the bridge are prevented from vibrating due to strong additional mass and additional damping generated by the water, and finally flutter of the bridge is avoided or the flutter critical wind speed is increased drastically. A plurality of holes are formed in the heaving plate, and an opening and closing plate is arranged to further improve the bridge flutter control effect. The device has theadvantages of being simple, convenient to operate, good in control effect, light in weight, low in cost and high in practicability. Te heaving plate is arranged at the bottom of the main beam in a non-working state, so that the attractiveness of the bridge is not influenced, and navigation under the bridge is not influenced. When the heaving plate is in a working state, the heaving plate meets strong wind of sixteen or more levels in dozens of years, and navigation under the bridge is avoided.

A preparation method of the damage of the protection slopes of underwater concrete slabs is applicable to the preparation of the damage of the protection slopes of the underwater concrete slabs of waterways, dikes, dams, bank slopes, etc. In the method, underwater detection is carried out, mould bags with a suitable size are customized according to the position and the shape of a damage hole, mould bag concrete is positioned and casted, after the mould bag concrete blocks the damage hole, an infusion hole and a water outlet are bored at proper positions above the damage hole, a duct is appliedto infuse underwater non-dispersible concrete from the infusion hole, the self-compaction and anti-dispersibility of the underwater non-dispersible concrete is utilized to fill up the cavity, seeperis drained out of the water outlet, consequently, the cavity is filled up, and the rupture and the collapse of the damaged slab can be prevented. The present invention does not need to build a cofferdam, underwater human operation is relatively less, engineering quantities and construction difficulties are reduced and the cost is decreased; because the underwater non-dispersible concrete is utilized in the concreting construction, the construction is safe and the water body is not polluted; a waterway is not needed to be closed up, so navigation is not affected.

The invention relates to the technical field of pipe sinking engineering construction, and discloses a pipe sinking construction method of an inverted siphon culvert across a river section. The pipe sinking construction method comprises the steps of excavation of an underwater groove, construction of a gravel cushion, steel pipe preparation, steel pipe sinking, steel pipe hydraulic pressure test and backfilling of medium-coarse sand and dimension stones. Steel pipes are welded integrally on the land, the characteristics of high connecting opening quality, accurate alignment, high constructionspeed and guaranteed welding joint quality inspection are achieved, then overall sinking is performed in water, the process is relatively simple, the construction efficiency is high, the quality is guaranteed, the construction period is greatly shortened, the construction cost is effectively reduced, and the downstream urgent water demand is met; and meanwhile, no restriction of special weather iscaused, the risk of flood control is low, river rising does not need to be worried about, navigation is not affected, and the safety of the construction is greatly increased.

The invention provides a ship lift lifting type double-steel-beam anti-collision system which comprises a double-blocking anti-steel-beam assembly, a supporting component assembly, a lifting driving device, a reversing device, a lifting connecting assembly and a supporting structure. The lifting driving device is arranged in the ship chamber main longitudinal beam structure on the side edge of theship reception chamber structure, the lifting driving device is connected with the double-blocking steel beam assembly through the reversing device and the lifting connecting assembly, and the double-blocking steel beam assembly can be driven by the lifting driving device to move up and down; the double-blocking steel beam assembly comprises an impact beam, a safety beam and a middle connecting device, the impact beam and the safety beam are fixedly connected through the middle connecting device, and the supporting structure is fixed to a ship chamber structure on the inner side of the safetybeam. Large safety redundancy is achieved, the collision force between the ship and the plastic beam is effectively reduced, and the adverse effect of the collision load of the ship colliding with the anti-collision beams on the ship compartment structure is reduced; a detachable connecting structure is adopted between the two stages of anti-collision beams so that the collision beam damaged by collision is convenient to replace; the ship lift lifting type double-steel-beam anti-collision system can meet blocking requirements of ships with bulbous bows.

The invention discloses a seismic refraction wave exploration method for a cross section of a river bed and a device thereof. The method comprises the following steps that: impulse points are arranged along the cross section of the river bed at equal intervals, the manual impulse is sequentially carried out on each impulse point, seismic waves generated in the manual impulse process are converted into refracted waves after being refracted by a bedrock surface of the river bed, and the refracted waves are received by transducers on banks at both sides and are recorded by engineering seismographs; and propagation time data of two groups of refracted waves recorded by the transducers on both the banks and the positions of the impulse points are calculated and processed to obtain the thickness of a coverage layer of the cross section of one section of river bed. According to the invention, a buoyant cable with the unit price of 150,000RMB does not need to be used, so that the exploration cost is greatly saved. In the exploration process, the cable is sunk at the river bottom and does not influence the navigation of ships, and thus, in the exploration process, the shipping suspension does not need to be carried out. Steel wires do not need to be hung under the complex hydrologic condition, and thus, the exploration is safe to carry out and is not influenced by the width of the river surface.

In order to reduce the puncture friction between the surface of a cannula electrode cylinder and brain tissue in deep brain stimulation surgery and decrease the puncture damage degrees of the cannulaelectrode on the brain tissue, and through the combination of the antifriction thought of a bionic microtexture on friction surfaces, a staggered array bionic microtexture brain stimulation cannula electrode and a preparation method thereof are provided. A series of linear type array groove bionic microtextures is processed on the surface of the cannula electrode cylinder; the linear type array groove bionic microtextures are equidistantly distributed in the circumferential direction on the surface of the cannula electrode cylinder; through a solid nanosecond laser system, a hollow rotary clamping device with controllable rotating speed and rotating angles and an angle tilt table with controllable inclination degrees, linear type grooves can be processed on the outer cylinder of the cannula electrode in the processing form of laser scanning, so that processing can be automatically and efficiently accomplished, and the dimensional precision of the grooves can be guaranteed; and the prepared cannula electrode can reduce the puncture friction between the surface of the cannula electrode cylinder and the brain tissue and decrease the puncture damage degrees of the cannula electrode onthe brain tissue.

The invention belongs to the technical field of arch bridge construction, and relates to a steel box arch bridge arch rib segmental vertical rotation structure and a construction method, the steel boxarch bridge arch rib segmental vertical rotation structure comprises a horizontal rotating system used for completing arch rib plane rotation and a vertical rotating system used for completing lifting and lowering in an arch rib vertical plane; the horizontal rotating system comprises a lower rotating disc, a horizontal rotating system, an upper rotating disc and a traction system; the arch rib is divided into an upper section arch rib and a lower section arch rib; the vertical rotating system comprises an integral arch rib vertical rotating hinge used for fixing the lower section arch rib, asection arch rib vertical rotating hinge which is installed at the joint of the upper section arch rib and the lower section arch rib, a buckling cable, a buckling tower and a rear anchoring system.A lifting tower frame and a lifting cable which is arranged on the lifting tower frame and is used for controlling the upper section arch rib are arranged below the upper section arch rib; a balance cable is installed between the inner side of the upper portion of the buckling tower and the outer side of the upper rotary disc, and the problems that existing valley terrain arch rib vertical rotation construction is limited by terrain, the height of an assembled support is large, material labor input is large, arch rib vertical rotation lifting loads are large, and construction safety risks arelarge are solved.

A self-propelled mobile formwork for the construction of a double rectangular water conservancy aqueduct, including an outer beam system (1), an outer formwork system (2), an inner beam system (3), an outer formwork system (4), and an electric control system (5 ) and the hydraulic system (6); the outer beam system (1) is the main bearing system of this equipment, mainly composed of the outer beam (1a), the No. 1 leg of the outer beam (1b), and the No. 2 leg of the outer beam (1c), outer girder No. 3 leg (1d), outer girder No. 4 leg (1e), and outer girder rear travel (1f); the outer girder (1a) is in the form of a box-shaped composite girder, which is in the form of double girders. The beam center distance is 9.5 meters, and the two beams are formed as a whole by two sets of end connecting beams, 8 sets of intermediate connecting beams, and 16 sets of left and right symmetrical cantilever beams; the outer main beam is the main load-bearing structure of the slot machine, and the pouring state is passed The No. 3 and No. 4 outriggers transmit the load to the top of the pier before and after the pouring span respectively.