41results about How to "Save engineering investment" patented technology

The invention provides an unfavorable geological section treatment structure of an underground high-pressure gas storage and a design method of the unfavorable geological section treatment structure. The treatment structure comprises replacement concrete arranged between a weak structural layer and backfill concrete. The section of the replacement concrete in the radial direction of the gas storage is an isosceles trapezoid, the upper bottom edge of the isosceles trapezoid is connected with the weak structure layer, the lower bottom edge of the isosceles trapezoid is connected with the backfill concrete, the two waist edges of the isosceles trapezoid are connected with the surrounding rocks on the two sides of the replacement concrete respectively, and the length L3 of the upper bottom edge is smaller than the length L1 of the lower bottom edge. The treatment structure can prevent the safety problem of the gas storage caused by the characteristics of low strength, easy deformation and the like of the weak structural layer.

The utility model provides a compact no support taper Y type steel bifurcated pipe structure for hydrostatic test, including main taper, main taper pipe, support taper pipe, reinforcing rib, main taper blind, support taper pipe blind and gear type reinforcing ring to the steel plate, the upstream side of main taper is coaxial welding main taper blind through gear type reinforcing ring to the steel plate, the downstream side of main taper is coaxial welding main taper pipe, the downstream side of main taper pipe is symmetrical each welding fixed one support taper pipe left and right, sets up reinforcing rib between two support taper pipes, the downstream side of each support taper pipe is coaxial welding support taper pipe blind through gear type reinforcing ring to the steel plate. The utility model can effectively solve the problem of the big size of steel bifurcated pipe hydrostatic test body, the big thickness of blind and the poor quality of blind and main pipe weld, thereby reducing the traffic hole, construction support hole excavation section size, saving the project investment and construction period, improving the blind and steel bifurcated pipe weld joint quality simultaneously, avoiding the security risk of steel bifurcated pipe body type hydrostatic test, providing a novel device for steel bifurcated pipe hydrostatic test.

The utility model relates to a tunnel structure combining diversion, water delivery, emptying and ecological discharge. The method is suitable for the technical field of water conservancy and hydropower engineering. According to the technical scheme, the tunnel structure combining flow guiding, water conveying, emptying and ecological discharging is characterized by comprising a flow guiding tunnel, the first end of the flow guiding tunnel is located on the upstream of a dam, and the second end of the flow guiding tunnel is located on the downstream of the dam; the water intake tower is arranged at the first end of the diversion tunnel, at least two water intake ports located at different heights are formed in the water intake tower, and the water intake ports are provided with water intake gates; the concrete plug is arranged in the diversion tunnel and can be used for plugging the diversion tunnel, and a pressure steel pipe communicated with the upstream and the downstream of the plug is arranged in the plug; at least part of the water conveying steel pipe is located in the diversion tunnel on the downstream side of the concrete plug, and a water inlet of the water conveying steel pipe communicates with the pressure steel pipe in the concrete plug; the blow-down pipe is connected to the water conveying steel pipe and is provided with a control valve; and the ecological drainage pipe is connected to the blow-down pipe and is provided with a control valve.

A connecting tower for a compact circuit and a conventional circuit comprises a tower body, a right side ground wire cross arm, a left side ground wire cross arm, a left side wire cross arm, a T-shaped jumper cross arm, a right side upper phase wire cross arm, a right side lower phase wire cross arm and an L-shaped jumper cross arm, and the T-shaped jumper cross arm is arranged at the end of the right side ground wire cross arm and the end of the left side wire cross arm. The L-shaped jumper cross arm is arranged at the end part of the lower-phase lead cross arm at the right side; the front portion and the rear portion of the right side upper phase wire cross arm are respectively provided with a first wire tension string hanging point, the front portion and the rear portion of the left side wire cross arm are respectively provided with a second wire tension string hanging point, the rear side of the middle of the tower body is provided with a third wire tension string hanging point, and the rear side of the right side lower phase wire cross arm is provided with a fourth wire tension string hanging point. By utilizing the strain tower, the strain tower shaped like the Chinese character'gan 'of a compact line and a conventional line can be connected, enough electrical safety distance can be kept, steel of the iron tower is reduced, and engineering investment is saved.

The utility model relates to the technical field of electric power facilities, in particular to a power transmission line drilling steel frame which comprises a drilling wire steel frame, a drilling ground wire steel frame and a tower body gusset plate. The through-drilling wire steel frame and the through-drilling ground wire steel frame are connected to the tower body gusset plate through bolts; the drilling wire steel frame and the drilling ground wire steel frame are symmetrically arranged on the two sides of the existing tower body. The through-drilling wire steel frame comprises an upper-layer through-drilling wire steel frame and a lower-layer through-drilling wire steel frame; front and rear side middle-phase tension strings are respectively arranged on the front and rear sides of the drilling upper-layer wire steel frame; front and rear side edge phase tension strings and edge phase jumper strings are respectively arranged on the front and rear sides of the drilling lower layer wire steel frame; ground wire tension strings are arranged on the front side and the rear side of the drilling ground wire steel frame respectively, a set of middle-phase jumper suspension strings are hung at the end of the outer side of the drilling ground wire steel frame, and ground wire tension strings are arranged on the front side and the rear side of the drilling ground wire steel frame respectively. According to the scheme, a newly-built line is directly drilled through an existing line through the steel frame, land occupation is not needed, and the original line does not need to be heightened.

The invention belongs to the field of heat absorption towers, and provides a molten salt pipeline system in a heat absorption tower and the heat absorption tower. Wherein the molten salt pipeline system in the heat absorption tower comprises a molten salt pipeline, a support hanger and a combined support steel beam; the combined supporting steel beam comprises a main beam and a supporting beam; the molten salt pipeline comprises an upper tower cold molten salt pipeline and a lower tower hot molten salt pipeline; the upper tower cold molten salt pipeline and the lower tower hot molten salt pipeline are respectively formed by connecting a plurality of pi-shaped bends end to end; the pi-shaped bend is formed by connecting two bent bends end to end; the bent bend is composed of a first vertical pipe, a first elbow, an inclined pipe, a second elbow and a second vertical pipe which are connected in sequence; the angle of the first elbow and the angle of the second elbow are both smaller than or equal to 75 degrees. The upper tower cold molten salt pipeline and / or the lower tower hot molten salt pipeline are rooted on the corresponding combined supporting steel beams through the supporting hangers; and the upper tower cold molten salt pipeline and the lower tower hot molten salt pipeline are arranged between the main beam and the cylinder wall of the heat absorption tower.

The utility model belongs to the technical field of the design of the opening and closing mechanism of the stoplog gate, and particularly relates to a transfer device for the leaves of the stoplog gate. The utility model includes a water inlet hole, a stoplog gate storage area, a door machine track and a one-way door machine, and a trolley track is arranged on the side area of the water inlet hole and perpendicularly intersects with the door machine track, a transfer trolley is installed on the trolley track, and the transfer trolley is equipped with a power mechanism for driving the trolley to reciprocate along the trolley track; a load platform is arranged on the transfer trolley through a lifting mechanism, and the load platform is used for transferring the stoplog gate leaves; the trolley track has a first end arranged close to the door machine track and a second end arranged away from the door machine track, the stoplog gate storage area is arranged at the second end of the trolley track, and the stoplog gate storage area is arranged with storage platforms for storing the stoplog gate leaves on both sides of the trolley track. The utility model can conveniently realize the transfer of the stoplog gate leaves in the vertical direction of the one-way door machine running track.

The present invention discloses an auxiliary structure of a subway station, characterized in that it comprises a pipe jacking machine shell (6), a secondary lining (7) in the shell, a dark excavation part, an auxiliary structure pipe jacking part (4) and an auxiliary structure open excavation part (3); one end of the dark excavation part is connected to a station body (1), and the other end is connected to the secondary lining (7) in the shell; the pipe jacking machine shell (6) is connected to the auxiliary structure pipe jacking part (4); the auxiliary structure pipe jacking part (4) is connected to the auxiliary structure open excavation part (3); and the pipe jacking machine shell (6) is coated on the outer surface of the secondary lining (7) in the shell.

The application provides a rainwater and accident water comprehensive management system and management method, and the system comprises a first automatic valve, a monitoring well, a second automatic valve, a total discharge opening water storage monitoring pool, a third automatic valve, a flow meter, a fire pump state acquisition unit and a fourth automatic valve. The monitoring well is provided with a first online monitoring device, the second automatic valve is interlocked with monitoring data of the first online monitoring device; the total discharge opening water storage monitoring pool is provided with a second online monitoring device, the third automatic valve is interlocked with monitoring data of the second online monitoring device; and the fourth automatic valve is interlocked with flow data of the flow meter and a fire state indication signal of the fire pump state acquisition unit. The management system can automatically switch the water flow path according to the real-time monitoring data, improve the automation degree, reduce the occurrence of misoperation, missed operation and delayed operation, improve the response speed and operation stability, maximize the realization of pipe network resource sharing, effectively reduce the construction period engineering investment and operation cost.

The utility model discloses a modular compact micro-positive pressure natural gas reciprocating compressor unit which comprises a main engine skid and an auxiliary engine, and the main engine skid comprises a compressor; the auxiliary machine comprises a gas inlet cooler, a gas inlet washer, a gas outlet cooler and a process gas buffer, the gas inlet end and the gas outlet end of the gas inlet washer are connected with the gas outlet end of the gas inlet cooler and the gas inlet end of the compressor respectively, and the gas inlet end and the gas outlet end of the gas outlet cooler are connected with the gas outlet end of the compressor and the gas inlet end of the process gas buffer respectively; and the air inlet cooler, the air inlet scrubber, the air outlet cooler and / or the process air buffer are arranged in a modular plug-in form. According to the utility model, through reasonable layout, the existing resources on site are utilized, and the resources lacked on site are supplemented by adopting modular equipment, so that the resource utilization is reduced, the engineering investment is reduced, and the occupied space is reduced; through the modular design of the auxiliary machine, the auxiliary machine can be conveniently transported to an offshore platform after being built from a land factory, the hoisting difficulty is reduced, and the installation difficulty is reduced.

The utility model provides a pile film bag earth and rock cofferdam suitable for a high-permeable foundation. The pile film bag earth and rock cofferdam comprises a high-strength woven bag filled earth and rock cofferdam body, a high-strength composite geomembrane bagged earth and rock slope protection and anti-seepage blanket, a geomembrane anti-seepage inclined wall, an earth and rock filling cofferdam body, a high-strength composite geomembrane bagged earth and rock slope protection, a cofferdam crest mud stone pavement, a permeable layer and the like. The upstream upstream face adopts a double-insurance combination form of a high-strength composite geomembrane bagged soil and stone anti-seepage blanket, a high-strength composite geomembrane bagged soil and stone slope protection and a geomembrane anti-seepage inclined wall, and the good water retaining, anti-seepage, anti-impact and anti-frost heaving effects are achieved. And meanwhile, the foundation adopts the steel sheet pile anti-seepage core wall, so that the foundation seepage stability problem of the cofferdam constructed on the high-permeability foundation can be effectively solved. The anti-seepage structure can be applied to various wading engineering construction scenes and has the advantages of guaranteeing the anti-seepage effect, being safe in structure, saving investment, shortening the construction period, being environment-friendly and the like.

An integrated sewage pump station combined with a pipe jacking caisson, comprising a sewage pipe jacking caisson and an integrated sewage pump station, the bottom of the sewage pipe jacking caisson is provided with a bottom sealing and a bottom plate; the inside of the sewage pipe jacking caisson is divided into a collecting pool and an operation room by an inner partition wall, the integrated sewage pump station is installed in the operation room, and the bottom plate of the integrated sewage pump station is integrally cast with the bottom plate of the caisson; a sewage inlet pipeline is communicated with the collecting pool, and a communicating pipeline is arranged between the bottom of the collecting pool and the bottom of the integrated sewage pump station. The utility model makes full use of the inside space of the pipe jacking caisson, and integrates the integrated pump station and the collecting pool in the caisson, so that the construction operation can be carried out under the adverse conditions of high underground water level, poor soil condition and limited construction operation space; and the utility model has the advantages of reducing the occupied area and saving land.

A stone-inserted concrete apron energy dissipation and scour prevention structure belongs to the field of hydraulic engineering structures and comprises a plurality of stone-inserted concrete apron blocks which are spliced with one another, and gaps are reserved between the stone-inserted concrete apron blocks. Each stone-inserted concrete apron block comprises reinforced concrete sashes on the periphery and a rubble concrete layer in the rubble concrete block. A plurality of protruding inserted stones are arranged on the top of the rubble concrete layer. And a gap separating plate is arranged in the gap. The inserted stones are embedded into rubble concrete, friction with water flow is increased, complementary energy can be eliminated, flow velocity distribution can be adjusted, water flow out of a pool can be evenly diffused, a downstream riverbed can be protected from being scoured, meanwhile, reinforcing steel bars are arranged in concrete lattices, the bearing capacity of the concrete is enhanced, cracking is prevented, and the overall durability and anti-seismic performance of the structure are improved. The rubble concrete is filled in the reinforced concrete sash, local materials are used, and engineering investment is saved. The problem that discharged water flow scours and destroys an apron and a riverbed can be effectively solved.

The application discloses a diversion tunnel alternating flow staging gate closing water storage structure and method, relates to the technical field of water conservancy and hydropower construction, and comprises a first diversion tunnel, a second diversion tunnel and a three-face stoplog gate, the first diversion tunnel is provided with a first water inlet and a first water outlet at two ends, and is further provided with a third water inlet, the setting height of the third water inlet is higher than that of the first water inlet; the first diversion tunnel is further provided with a first gate slot and a third gate slot, and the first gate slot and the third gate slot are located at the front and rear of the third water inlet respectively; the second diversion tunnel is provided with a second water inlet and a second water outlet at two ends, the setting height of the second water inlet is higher than that of the first water inlet and is lower than that of the third water inlet; the second diversion tunnel is vertically provided with a second gate slot at the second water inlet; and the stoplog gate is formed by parallel and coplanar splicing of a plurality of baffles. The application can solve the problem that the downstream river channel cannot be effectively prevented from being dehydrated and cut off under the premise of ensuring economy and safety.

The invention relates to the technical field of water conservancy and hydropower engineering, and discloses a diversion tunnel, flood spilling tunnel, flood discharge and sand discharge tunnel and ecological drainage tunnel combined structure and a construction method thereof. The structure comprises a flood spilling tunnel vertical shaft section, the diversion tunnel is formed in one end of the bottom of the flood spilling tunnel vertical shaft section, and a flood spilling tunnel recession tunnel section is arranged at the other end of the bottom of the flood spilling tunnel vertical shaft section; the flood spilling tunnel recession tunnel section is connected with the flood spilling tunnel vertical shaft section through a horizontal pressure slope section; a stilling pool, a diversion tunnel and a spillway tunnel vertical shaft section are arranged at the tail end of the spillway tunnel recession tunnel section, and an ecological drainage tunnel is arranged below the spillway tunnel recession tunnel section; the flood spillway vertical shaft section comprises a vertical shaft, a stilling well is downwards formed in the bottom end of the vertical shaft, a service gate is arranged on the side, close to the diversion tunnel, of the vertical shaft, when the service gate is closed, the service gate is used for playing a flood spillway function, and when the service gate is opened, the service gate is used for playing a flood discharge and sand discharge function. The structural arrangement and the construction method have the advantages of reducing the engineering quantity, shortening the construction period, saving the engineering investment and the like.

This invention provides an auxiliary system and construction method for positioning and installing lattice columns. The auxiliary system includes a guide frame and a positioning mechanism. The guide frame can be nested and inserted into the lattice column and is detachably connected to it. The guide frame includes a positioning frame and multiple first positioning blocks fixed to the outside of the positioning frame. The positioning mechanism controls the center deviation and verticality of the lattice column by adjusting the center deviation and verticality of the guide frame. The positioning mechanism includes a hollow rectangular frame, four jacks installed at the bottom of the four corners of the rectangular frame, and an adjustment mechanism for adjusting the orifice size through which the guide frame passes. The orifice is located within the rectangular frame, and its size matches the size of the positioning frame. The multiple first positioning blocks are located on and abut against the rectangular frame. By using this auxiliary system to install lattice columns, the positioning difficulty of ultra-long hollow lattice columns is reduced, the positioning operation time is effectively shortened, and the positioning effect is stable and reliable.

The utility model discloses a kind of underground station pile wall composite structures, including underground station structure and the foundation pit enclosure stake of being set in the outer side of underground station structure, the sidewall bottom joist of being equipped with in the lower side of underground station structure two sides, transverse reserved reinforcement is equipped in the foundation pit enclosure stake, first connection reinforcement is correspondingly equipped in the sidewall bottom joist, and the foundation pit enclosure stake is close to the side of underground station structure and is equipped with the reinforcement connection component for the transverse reserved reinforcement and the first connection reinforcement connection. The utility model analysis foundation pit enclosure stake base is used as the composite structure of underground station pile foundation, realizes enclosure foundation pit engineering and underground station structure intensive sharing, solves later period enclosure stake waste problem, effectively improves resource utilization efficiency, simultaneously reduces underground station structure outer wall thickness and reinforcement, saves engineering investment.

The utility model discloses a bridge locomotive hole blocking structure capable of reducing the length of an underground powerhouse. The structure comprises a rock wall crane beam, a rock end wall, a car stop hole and a car stop, the car stop hole is embedded in the rock end wall at the end of the rock wall crane beam, the bottom face of the car stop hole is flush with the top face of a rail on the rock wall crane beam, the car stop hole is backfilled with backfill concrete, and the car stop hole is formed by the backfill concrete. The car stop is fixed in the backfill concrete and extends outwards relative to the rock end wall in the moving direction of the track of the bridge crane. By arranging the bridge crane blocking hole, the car blocking structure is prevented from occupying the space of a plant, the length of the underground plant and the excavation and support engineering amount of the plant can be effectively reduced, the damage risk of a palisade crane beam structure is reduced, and the operation safety of a bridge crane is improved.

The invention relates to the technical field of hydroelectric power generation engineering, in particular to a design method and a structure of a separated flip flow energy dissipation facility, which creatively constructs a circle layer mode of a core circle, a spallation circle, an emulsification circle and an atomization area of a flip flow tongue spallation section by analyzing the characteristics of the flip flow tongue running in the air. A spallation circle layer division standard is provided, numerical simulation calculation, model test and engineering prototype observation results are combined, an emulsification circle of the flip bucket is included in a flip bucket inner side boundary control range, and a core circle and a spallation circle of the flip bucket are included in a flip bucket impact area control range. Establishing an area fitting calculation formula of the emulsification ring of the deflecting water tongue and the impact area of the deflecting water tongue; a release structure and a downstream flip flow energy dissipation facility body are creatively arranged in a separated mode, the separated flip flow energy dissipation facility structure is provided, the spatial layout required by a flip flow water tongue is met, engineering measures of a separation area can be greatly reduced, and engineering investment is reduced.

The invention discloses a batholith new material pile casing, and belongs to the field of cast-in-situ bored pile technical equipment. The new batholith material pile casing comprises a casing body, the casing body is formed by one-time pouring of a new batholith material, the new batholith material comprises superhard rock particles, high-performance fibers and an adhesive, the casing body with high compressive strength, high breaking strength and high machining precision can be formed, and meanwhile a first connecting part and a second connecting part are formed at the two ends of the casing body respectively. The adjacent barrels are connected together in a matched and nested mode through the first connecting parts and the second connecting parts and are fixedly connected through the connecting pieces, so that the stability and reliability of connection between the adjacent barrels are guaranteed. The new batholith material pile casing has the advantages of being high in compressive strength and breaking strength, good in corrosion resistance and geometric stability, high in machining precision and the like, is suitable for earthquake fault zones, soft and broken soil layers, karst, rich in underground water and other stratums which are complex in geology and prone to hole collapse, can reduce 50%-60% of engineering investment compared with a steel pile casing, and has high application value.

A deformation control method for newly-built structure above rail transit operating tunnel, which is combined with adjustable axial force anchor cable and pipe roof core control system, has mature technology and can be completely implemented on site with little operation difficulty. The method realizes active and fine adjustment of anchor cable axial force, provides data feedback combined with monitoring points on the operating tunnel floor, track and side wall, and can adjust the vertical deformation of existing line in real time, so that the rail transit structure is always in the optimal state, which cannot be achieved by the existing overpass scheme. The method makes it possible to overpass the operating tunnel in small distance and long distance, and realizes the effective combination of active control system, foundation pit support and permanent protection system of anchor cable. The shaft provides space for pipe roof construction and anchor cable installation, and also serves as the retaining structure of the new structure foundation pit. After the construction is completed, the shaft top is sealed to realize the permanent protection of the anchor cable device, and the entire system is effectively connected, reducing the project investment.

The utility model provides a disturbance type gas mixing device and a gas turbine power generation system, the disturbance type gas mixing device comprises a diffusion section, a mixing section and a contraction section which are sequentially arranged, all the sections are smoothly connected, the diameter of the diffusion section is gradually changed from small to large, and the diameter of the contraction section is gradually changed from large to small; a first inlet is formed in the front end of the diffusion section, a plurality of second inlets are formed in the circumference of the outer side of the mixing section, and an outlet is formed in the tail end of the contraction section and used for outputting mixed gas; a flow guide conical cylinder is arranged in the gas mixing device, the front end of the flow guide conical cylinder is in a conical shape with the diameter from small to large, and the flow guide conical cylinder extends to the outlet from the first inlet; the second inlet is connected with the outer wall of the flow guide conical cylinder through a pipeline, the pipeline is not communicated with the flow guide conical cylinder, every two adjacent pipelines are connected through a plurality of pipelines, and a plurality of through holes are formed in the pipelines. The structure is simple, and the mixing uniformity can be improved.

This utility model provides a fully gravity-fed drainage structure for a switchyard, belonging to the field of water conservancy and hydropower technology. It includes a switchyard site, and a relay protection building and a GIS building respectively installed on top of the site. Both the relay protection building and the GIS building have basements for cable laying at their bases. The two basements are connected by a cable corridor. A site drainage ditch is installed around the outer perimeter of the switchyard site, and an indoor drainage ditch is installed around the inner perimeter of the basements. A corridor drainage ditch is installed inside the cable corridor, and a collection well is also installed in the basement of the GIS building. This utility model, through its gravity-fed and centralized drainage design, solves the problem of flooding caused by water pumps used for drainage when indoor water seepage occurs, especially in cases of pump equipment failure or power outage.

The application discloses a vertical roller mill and a machine-made sand production system, and relates to grinding equipment technology. The roller mill comprises a grinding part, wherein a grinding disc and a grinding roller constitute part of the grinding part. The roller mill comprises a pre-milling part and an adaptive material blocking adjusting part. The pre-milling part is composed of a feeding center shaft and milling units, and the feeding center shaft is located above the grinding disc. The N milling units are uniformly distributed around the feeding center shaft, and the pre-milling part of the milling units is in contact with the grinding end face of the grinding disc. The adaptive material blocking adjusting part comprises a rocker seal frame, a material blocking device and a linkage assembly. The rocker seal frame serves as a grinding roller support and is installed on the roller mill rack. The material blocking device comprises a fixed material blocking device and a sliding material blocking device combined with the fixed material blocking device through vertical movement, and the two devices jointly form a surrounding blocking structure. The linkage assembly connects the rocker seal frame and the sliding material blocking device, so that the rocker seal frame drives the sliding material blocking device to move upwards through the linkage assembly. Through the technical innovations, the performance of the vertical roller mill is comprehensively improved.

The invention relates to a compounding method of a flocculant adapting to high temperature and high pH value. The compounding method comprises the following steps: adding biochar into a sodium silicate solution, keeping the pH value of the solution to be 3-5, polymerizing to generate polysilicic acid containing biochar, adding aluminum chloride, keeping the pH value of the solution to be 8-10, stirring and reacting for 2 hours, and drying to obtain the composite flocculant for high temperature and high pH value. The use environment of the flocculant in the prior art is mostly acidic, flocculation effect reduction and failure are easy to occur under the alkaline condition, and the flocculant suitable for alkaline and high-temperature use conditions is prepared aiming at the two conditions that the use temperature of the flocculant in the prior art is mostly 5-20 DEG C and the stability of the flocculant becomes poor under the condition that the temperature exceeds 25 DEG C; the preparation method is simple, low in cost and suitable for being self-made in basic water plants.

The invention discloses a gas-liquid separation and associated gas purification treatment integrated device for an oil field, and belongs to the technical field of oil field ground process gathering and transportation equipment. Comprising a gas-liquid separation unit used for carrying out primary gas-liquid separation on a mixed solution in a tank body; the air cooling unit is used for carrying out condensation and secondary gas-liquid separation on the separated gas; the filtering unit is used for filtering the condensed gas; and the sun-shading unit is used for shading the condensation unit. Compared with the prior art, heating, gas-liquid separation and gas purification are integrated, one device is used for replacing the function which needs to be completed by two devices originally, the technological process is shortened, meanwhile, the engineering investment is reduced, and skid-mounting and modularization are achieved.

The utility model provides a middle transverse shaft type flap gate for a navigation gate hole, which stretches across the navigation gate hole, is used for retaining water, discharging flood and navigating, and comprises a gate bottom plate, two side gate piers, at least one middle gate pier, a shaft driving device, a transverse rotating shaft, a gate plate, middle supporting bearings and two side supporting bearings, and the number of the middle supporting bearings is in one-to-one correspondence with the number of the middle gate piers; equipment mounting cavities are formed in the two side gate piers; the middle gate piers are evenly distributed in gate holes between the two side gate piers and fixedly arranged on the gate bottom plate at intervals, and the middle supporting bearings are installed on the tops of the middle gate piers in a one-to-one correspondence mode. The transverse rotating shaft penetrates through each middle supporting bearing and each side supporting bearing; the transverse rotating shaft is fixedly connected with the vertical middle of the gate plate, and the gate plate comprises a lower plate part located below the transverse rotating shaft and an upper plate part located above the transverse rotating shaft. The gate for the navigation gate hole meets the requirements of safe operation, convenience in overhaul and maintenance and cost reduction at the same time.