29 results about "Stilling basin" patented technology

The invention relates to the crossing field of water conservancy projects and computer simulation technologies, in particular to a river and canal protection engineering failure dynamic judgment and boundary updating method, which comprises the following steps of: marking a protection engineering area and setting the protection engineering area as a non-scour boundary during simulation initialization, and calculating hydrodynamic parameters such as water depth and flow velocity in each time step; comparing with the water depth-flow velocity relationship of a gabion, the design flood control standard of a stilling pool, the bottom elevation of an anti-scour wall and other anti-scour thresholds, if the thresholds are exceeded, judging that the boundary is invalid and dynamically updating the boundary to be a scoured boundary, and continuing simulation by combining dynamic dry and wet grid judgment and GPU parallel calculation; according to the method, water flow-sediment-riverbed-protection engineering collaborative simulation is achieved, the progressive damage process is precisely restored, the erosion and deposition simulation error is lower than 9%, universality is high, and a reliable quantification tool is provided for flood control safety evaluation and optimization design of wading projects such as river and canal crossing engineering.

A diversion-type energy dissipation structure for a rubber dam, belonging to the field of hydraulic engineering structures, includes at least one central pier and multiple toe piers. The central pier is located on the dam bag. A guide wall is connected downstream of the central pier, situated on the slope section of the stilling basin. Multiple toe piers are located downstream of the dam bag, also situated on the slope section of the stilling basin. The height of the toe piers is lower than the height of the guide wall. This invention, by employing the above structure, effectively reduces the length of the wind zone downstream of the rubber dam by setting multiple guide walls and toe piers, adjusting the flow direction and flow pattern of the water downstream of the dam, reducing unfavorable deflecting flows, and minimizing the impact of wind, waves, and river morphology on the dam bag. This effectively reduces the length of the wind zone downstream of the rubber dam, solves the problem of dam bag swaying, and improves the overall stability and durability of the rubber dam structure.

The utility model discloses an adjustable sludge scraping device for a horizontal flow pool. The mud scraping plate is hinged to the bottom of a traveling crane mud discharging pipe supporting frame and extends to the bottom of a sedimentation tank, the air cylinder is arranged at the upper end of the traveling crane mud discharging pipe supporting frame and used for driving the mud scraping plate to turn over and swing, and the lifting rod and the adjusting connecting rod are arranged between the air cylinder and the mud scraping plate and can adjust the length. The floating connector is arranged between the adjusting connecting rod and the air cylinder, the first U-shaped groove buckle is arranged between the lifting rod and the mud scraping plate, and a second U-shaped groove buckle and a third U-shaped groove buckle are arranged between the mud scraping plate and the traveling crane mud discharging pipe supporting frame in a hinged mode. The air cylinder is adopted to swing and turn over the mud scraping plate through the lifting rod, so that the mud scraping plate swings to a vertical state to be in contact with the bottom surface of the sedimentation tank to realize sludge collection during cleaning, and the air cylinder pulls the mud scraping plate to turn over to a horizontal state during return stroke, so that floating sludge cannot be disturbed during return stroke movement, and the cleaning effect is improved.

The application discloses a symmetric type backwash type bottom flow energy dissipation structure, which comprises a stilling basin and a water release pipe; the water inlet ends of the stilling basin and the water release pipe are communicated with the water recession structure of the water discharge building respectively, the water release pipe is provided with at least two water release pipe water outlet ends, the water release pipe water outlet ends are arranged at the water outlet ends of the stilling basin and are located at the symmetric positions of the left and right sides of the cross section of the water outlet ends of the stilling basin, the water flow directions of the water release pipe water outlet ends are opposite to the water flow directions of the water outlet ends of the stilling basin, and the water release pipe water outlet ends are used for forming the opposite flow with the water flow of the stilling basin. The above scheme can solve the problems that the flow speed is too large and the energy dissipation effect is poor due to the large single-width flow caused by the fact that the stilling basin cannot be widened under the condition that the engineering terrain condition is limited, and the problems of complicated and difficult later maintenance caused by the increase of the auxiliary energy dissipation work.

When conducting routine inspections of stilling ponds, a combination of a first-stage general inspection, a second-stage detailed inspection, and a third-stage precise inspection is used to efficiently collect, identify, and diagnose defects in the bottom slab of stilling ponds in a complex underwater environment. [Solution] The present application provides an intelligent patrol inspection method, apparatus, equipment, and medium for the stilling basin of a high-arch dam, relating to the technical field of underwater exploration. The method of the present application includes the steps of: collecting tomographic images of the bottom slab of the stilling basin with a first acquisition device; performing a first-stage general inspection based on the tomographic images; collecting external images of the bottom slab with a second acquisition device based on the patrol inspection results of the first-stage general inspection; obtaining patrol inspection results of a second-stage detailed inspection based on the external images; collecting fine images of the bottom slab with a third acquisition device based on the patrol inspection results of the second-stage detailed inspection; and obtaining patrol inspection results of a third-stage precision inspection based on the fine images.

The invention discloses a variable cross-section spillway tunnel flow measurement method, and belongs to the technical field of hydraulic engineering, and the method comprises the following steps: S1, constructing an experiment system, the experiment system comprises a reservoir, a stilling pool and a plurality of experiment pipelines arranged in parallel, and the inlet end and the outlet end of each experiment pipeline are respectively communicated with the reservoir and the stilling pool; s2, selecting a target experimental pipeline: determining the shape of a to-be-tested variable cross-section flood discharge tunnel, and selecting the corresponding target experimental pipeline, so that the inlet end and the outlet end of the target experimental pipeline are respectively communicated with the reservoir and the stilling pool; s3, running the experiment and measuring data: supplying water into the reservoir, and measuring the flow velocity, pressure and water level in the target experiment pipeline; and S4, switching and repeating experiments: when another form of variable cross-section spillway tunnel needs to be tested, closing the inlet end of the current target experiment pipeline, and repeating the steps S2 and S3. The device has the effects of conveniently and quickly realizing data determination of experimental pipelines in different forms and improving the experimental efficiency.

The invention discloses a deep digging type stilling pool structure for energy dissipation and desilting of a corrugated bottom plate and an energy dissipation and desilting method. The structure comprises a plurality of wavy bottom plates with triangular sections, and the wavy bottom plates are arranged at the bottom of the stilling pool in parallel at equal intervals; the tail sill is arranged at the tail end of the stilling pool; the stilling pool front groove is formed in the bottom end of the incoming flow slope surface, and a hole is formed in a downstream side slope of the stilling pool front groove to form a sand discharging channel; the desilting cavities are formed in the centers of wave troughs formed by the adjacent wavy bottom plates, and the desilting cavities communicate with the desilting channels; part of bottom high-flow-speed water enters the desilting channel through a groove in the front portion of the stilling pool, and upward jet flow is generated through an outlet in the tail portion of the desilting cavity. The stilling pool structure has the turbulent flow enhanced energy dissipation function and the self-driven desilting function, efficient energy dissipation and active desilting are synchronously achieved, and the comprehensive efficiency of flood discharge, energy dissipation and desilting of the water conservancy project and the long-term operation stability are remarkably improved.

The invention relates to the technical field of safety monitoring and hydraulic calculation of water conservancy and hydropower engineering, in particular to a flood discharge dam section stilling pool average water level measuring and calculating method and system.The method comprises the steps that firstly, multi-source monitoring data of the opening degree of a radial gate, the dam front water level, the plant tail water level and the total flow of a warehouse-out station are collected, and quality control processing is conducted on the data; then, on the basis of the opening degree of the radial gate and the water level in front of the dam, the flood discharge flow and the total flood discharge flow of each gate orifice are calculated through a three-dimensional discharge curve; then, according to the difference value between the total flow of the warehouse-out station and the total flood discharge flow, the power generation tail water flow is calculated in combination with a water level-flow relation curve corresponding to the plant tail water level, and a dynamic flow balance model is established; and finally, generating a stilling pool water level initial value by adopting a non-constant flow empirical formula method, iteratively calculating the conjugate water depth through a hydraulic jump equation, and improving the calculation precision through an iteration method. According to the method, the problems of direct measurement difficulty in a torrential water flow environment and calculation errors in a non-constant flow condition are effectively solved.

The utility model discloses a kind of flying wing toe piers, which is composed of gate pier, spillway, flying wing toe pier, stilling basin, side wall and tail sill;The gate pier is arranged at one end of the stilling basin, and the water flows through the spillway into the bottom of the stilling basin;The side wall is arranged on both sides of the stilling basin;The tail sill is arranged at the other end of the stilling basin;The flying wing toe pier is arranged at the tail end of the spillway, and the tail is flush with the end of the reverse curve section of the spillway, arranged at equal intervals.The flying wing toe pier is different from the traditional toe pier in that the height of the tail is different, and it can adapt to different flow conditions.The reduction of the bottom flow velocity and the improvement of the energy dissipation efficiency reduce the length of the stilling basin and the impact pressure of the bottom plate, thereby reducing the investment of the entire stilling basin.

The stilling pool is characterized in that a heightened tail sill is arranged on the downstream side of an original tail sill, the original tail sill is located on the downstream side of a dam and an apron, a tail sill top platform is arranged at the top of the heightened tail sill, and heightened side walls are arranged on the basis of original side walls on the outer sides of the two transverse river direction ends of the heightened tail sill respectively; the slope ratio and the transverse river width of the heightened tail sill are kept consistent with the slope ratio and the transverse river width of the original tail sill; the length of the platform on the top of the tail sill in the river direction meets the requirement for arranging the movable flood control baffle and is used for temporarily retaining water when the stilling pool is overhauled. An arc-shaped chamfer is arranged at the turning position of the tail end of the tail sill top platform. On the premise that construction quality is guaranteed, engineering investment is saved, the original energy dissipation effect is not affected, and a dry land environment is provided for maintenance of the stilling pool.

The utility model belongs to the technical field of hydraulic structure repairing equipment, and particularly relates to a gabion construction device for repairing apron scour pits of a stilling pool of a hydropower station, which comprises an overwater hoisting platform and a grating cage supporting steel frame, hoisting equipment and feeding equipment are mounted on the overwater hoisting platform, the hoisting equipment is connected with the grating cage supporting steel frame, and the feeding equipment is connected with the grating cage supporting steel frame. According to the utility model, the construction efficiency and quality of the underwater gabion gabion are improved, the shape of stone dumping and filling of the apron bottom plate of the riverbed stilling pool is controlled, and the continuous stone dumping and filling operation can be realized; and the improvement of the construction application efficiency of the gabion gabion, the improvement of the construction quality and the promotion of the riverbed scouring pit defect treatment technology are facilitated.

This invention relates to the field of soil and water conservation technology, and provides a portable gully retainer and its deployment method for shallow gully management. The portable gully retainer includes a transverse retaining wall, a stilling basin, and protective wing walls. The transverse retaining wall is positioned horizontally along the width of the shallow gully and has an overflow outlet. The stilling basin is located downstream of the transverse retaining wall, with a gradient arrangement between the stilling basin and the overflow outlet. The protective wing walls are located at the end of the stilling basin furthest from the transverse retaining wall, and are angled to the flow direction of the shallow gully. The transverse retaining wall, stilling basin, and protective wing walls are connected to form a turbulent flow channel, which slows down the water flow velocity and controls the flow direction within the shallow gully. This invention effectively intercepts sediment, controls gully slope expansion and gully bottom erosion, is easy to assemble and disassemble, is reusable, and its deployment location and insertion depth can be dynamically adjusted according to the sediment deposition depth without affecting mechanized farming, fundamentally solving the problem of shallow gully management in black soil areas.

An asphalt concrete core wall dam body spillway comprises an overflow weir arranged at the top of a core wall dam, a base extending to a downstream slope toe along the top of the core wall dam, a discharge chute formed in the base and a stilling pool arranged at the tail end of the discharge chute. The discharge chute is divided into a plurality of second sub-bodies by a plurality of second transverse seams, the first sub-bodies and the second sub-bodies are mutually independent structures, the contact surfaces of the first sub-bodies and the second sub-bodies are step-shaped, and the first transverse seams formed by the adjacent first sub-bodies and the second transverse seams formed by the adjacent second sub-bodies are arranged in a staggered manner; the first split body is provided with a plurality of non-slip keys, the non-slip keys are embedded into non-slip key grooves in the bottom of the second split body, and compressible gaskets are arranged on the contact faces of the non-slip keys and the non-slip key grooves. And a certain movable gap is reserved on the downstream side of the non-slip key in the non-slip key groove. According to the method, engineering arrangement can be concentrated, adverse effects caused by sedimentation, vibration, leakage and the like between the dam body and the discharge chute are reduced, and the safety and stability of the dam are improved.

The utility model relates to the technical field of abrupt expansion drop sill stilling pool abrasion damage model tests, and discloses a stilling pool abrasion medium auxiliary throwing device which comprises a lifting arm frame part and a throwing box part, an inclined bottom medium box is arranged on the lower end face of a connecting plate, and the connecting plate is connected with the telescopic end of the lifting arm frame part. An opening baffle is arranged on one side of the inclined-bottom medium box in an up-down moving mode, the lifting arm frame part is installed on the pool wall of the stilling pool, in the throwing process, an abrasion medium is put into the inclined-bottom medium box, the inclined-bottom medium box is driven by the telescopic end of the lifting arm frame part to move downwards to the pool bottom, and the lower end of the opening baffle makes contact with the pool bottom and is jacked upwards; the opening of the opening baffle is aligned with the opening in the lower end of the inclined bottom medium box, so that the abrasion medium in the inclined bottom medium box slides to the pool bottom along the inclined bottom, manual throwing is not needed, the throwing point is more accurate, it can be ensured that the abrasion medium is thrown in place, and the experiment accuracy is improved.

This invention discloses a method for analyzing the ultimate load of arch block instability in an inverted arch stilling basin. Using structural mechanics methods, a mechanical model of arch block instability is established, dividing the instability process into three stages: lifting of the middle arch block, sliding of the two side arch blocks, and warping of the two side arch blocks. Considering engineering safety and reasonable computational complexity, the model is simplified, and a simplified structural mechanics analysis method that facilitates manual calculation is proposed. This method can calculate the ultimate load of arch block instability corresponding to different anchoring forces in an inverted arch stilling basin, providing a reliable theoretical basis for the structural design of inverted arch stilling basins and possessing significant engineering application value.

This invention relates to the field of fish collection facilities technology, specifically to a fish collection system. It includes: a fish collection device and a sorting device. One fish collection device is installed on each side of the end section of the power generation tailrace channel, and the sorting device is located on a sorting layer above the fish collection devices. The fish collection device includes a fish inlet, a stilling basin, and a fish collection pool. The fish inlet is located at the outlet of the power generation tailrace channel. The stilling basin, fish collection pool, and fish inlet are arranged sequentially along the water flow direction from upstream to downstream. The stilling basin is connected to the fish collection pool and contains energy dissipation equipment. The fish collection pool is connected to the fish inlet and contains a fish collection box with a fish release outlet. The sorting device includes a lifting hoist and a sorting assembly. The lifting hoist is used to lift the fish collection box to the sorting layer, and the sorting assembly is located on the sorting layer and can connect with the fish release outlet. The fish collection system provided by this invention achieves fish collection on both sides of the power generation tailrace outlet, improving fish collection efficiency and reducing equipment costs.

The application discloses a kind of hedging type bottom flow energy dissipation structure, it includes stilling basin and water release pipe;The water inlet end of the stilling basin and the water release pipe is communicated with the water withdrawal structure of water release building respectively, the water outlet end of the water release pipe is arranged in the side wall of the still water area of the stilling basin, for the water outlet end water flow of the water release pipe and the still water area water flow of the stilling basin are collided.The above scheme can solve the current bottom flow energy dissipation structure in the case where engineering topographic condition is limited, the stilling basin cannot be widened, resulting in the problem that the flow velocity is too large and the energy dissipation effect is poor due to large single-width flow, and the problem that the later maintenance is complicated and difficult due to the increase of auxiliary energy dissipation.

The utility model relates to the field of hydraulic engineering facilities, concretely relates to fishway (1) and barrage, wherein the fishway includes at least partly setting in the slope section on the stilling basin (3) downstream of the water gate a plurality of sections of the return section (11) connected in turn, and the slope of each return section is less than the slope of the slope section, to form the fish migration channel that the return ground extends from the bottom end of the stilling basin to the lock chamber of the water gate, and the bottom end of the fish migration channel is provided with the fishway entrance (13), and the top end is provided with the fishway exit (14) that communicates with the lock chamber of the water gate, when using, the fish in the downstream is attracted by the water flow that flows out in the fishway and is suitable for the migration, to enter the fishway and enter the lock chamber of the stilling basin upstream against the current, because the fishway return ground extends to the lock chamber of the water gate, the form of segmented climb relieves the height difference of the stilling basin, makes the water flow speed in the fishway lower, thereby is suitable for the migration of fish, makes fish be able to pass through the stilling basin and the water gate by the fishway.

The utility model discloses a stilling pool repairing structure, relates to the field of building repairing, and aims to solve the problem of weak impact resistance and erosion resistance caused by poor relevance between the repairing structure and a stilling pool in the existing stilling pool repairing process, the stilling pool repairing structure is provided with an anchoring component, the anchoring component is anchored into the stilling pool wall through an anchor bolt, and then a pull rod is connected with a repairing panel and penetrates through a repairing base body; the repairing structure and the stilling pool wall are firmly connected, the overall relevance is enhanced, the fixing piece connected with the repairing panel stretches into the repairing base body, the connecting tightness degree between the repairing panel and the repairing base body is increased, the adhesive force is improved, and the risk of falling off after long-time use is reduced; the repairing panel covers the repairing base body and blocks the opening of the damaged area, and the repairing panel serves as a part directly bearing water flow impact and erosion and replaces the repairing base body to directly bear water flow impact, so that the impact resistance and erosion resistance of the repairing structure are improved, and the durability is improved.

The application discloses a bottom flow energy dissipation structure, which comprises a stilling basin and a water outlet pipe; the water outlet pipe is located at one side of the stilling basin; the stilling basin and the water inlet end of the water outlet pipe are communicated with the water recession structure of a water discharge building respectively; the water outlet end of the water outlet pipe is arranged at the water outlet end of the stilling basin; the water flow direction of the water outlet end of the water outlet pipe is opposite to the water flow direction of the water outlet end of the stilling basin, and is used for forming a collision with the water flow discharged from the stilling basin. The above scheme can solve the problems that the energy dissipation effect is poor due to the large single-width flow caused by the fact that the stilling basin cannot be widened under the condition that the engineering terrain condition is limited, and the post-maintenance is complicated and difficult due to the increase of the auxiliary energy dissipation works.

The application discloses a kind of combined arrangement structure of venting hole and stepped spillway using hole inside stilling basin, including venting hole and stepped spillway, the horizontal plane projection of the axis of venting hole and stepped spillway is on the same straight line, or parallel to each other, or intersected;The stepped spillway is sequentially composed of stepped spillway, middle stilling basin and lower stepped spillway from upstream to downstream;The venting hole is sequentially composed of coaxial circular pressure pipeline and venting hole stilling basin from upstream to downstream, and the end of venting hole stilling basin is connected with the middle stilling basin of stepped spillway through WES weir, and the end of middle stilling basin is connected with lower stepped spillway, to realize the overall connection and connection of venting hole and stepped spillway.The application combines venting hole and stepped spillway, and through reasonable arrangement of connection section structure, effectively avoids adverse hydraulic phenomena such as water flow splashing, large bottom plate impact pressure and the like in connection section, while greatly reducing engineering investment.

The application provides a hydraulic structure structure of flood discharge, discharge and diversion, comprising a vertical shaft type spillway tunnel, a diversion tunnel communicated with the vertical shaft type spillway tunnel is arranged on one side of the vertical shaft type spillway tunnel, a water retreating tunnel connected with the vertical shaft section and the stilling basin section in the vertical shaft type spillway tunnel respectively is arranged in the vertical shaft type spillway tunnel, the tunnel body part of the diversion tunnel comprises a connecting section intersected with the water retreating tunnel, so that the diversion tunnel can share the water retreating tunnel tunnel section intersected through the connecting section with the vertical shaft type spillway tunnel; a water discharge pipe is arranged at the bottom of the water retreating tunnel, so that the water discharge pipe and the vertical shaft type spillway tunnel are arranged in a compact mode. The vertical shaft type spillway tunnel, the water discharge pipe and the diversion tunnel are combined, the tunnel body part of the diversion tunnel is combined with the water retreating tunnel of the vertical shaft type spillway tunnel, so that the construction period diversion requirement is met, and the reservoir emptying and flood regulation requirement in the operation period is met.

The invention discloses a double-layer drainage system of a large stilling pool, and belongs to the technical field of water conservancy projects. The system comprises an upper-layer water collecting pipe network and a lower-layer water collecting pipe network which are arranged in a stilling pool apron parting seam. The upper-layer water collecting pipe network adopts soft permeable pipes with smaller diameters, is positioned in the middle of the apron and is used for collecting seepage water at the top of the apron; the lower-layer water collecting pipe network is composed of a concrete drainage ditch and embedded soft permeable pipes with large diameters, is located at the bottom of the apron and is used for collecting deep seepage caused by uplift pressure. The water flow of the two layers of pipe networks finally converges into the drainage gallery through the seamless steel pipe and is discharged by the water pump after being guided to the water-collecting well. Based on the design thought of distributed water collection, partitioned water catchment and multi-point drainage, the uplift pressure of the apron of the stilling pool is effectively reduced, the anti-floating stability of the apron bottom plate during flood discharge is remarkably improved, and the structure has the advantages of being high in drainage capacity, stable in operation and convenient to construct.

This invention discloses a combined rapid construction method for working bridges, comprising the following steps: S1: Designing the load and dimensions of the working bridge over the river using a three-dimensional river flow coupling model; S2: Simulating and calculating the river water impact force based on the designed working bridge data; S3: Designing a corresponding river water impact force adjustment scheme based on the simulation results of S2, establishing a guide gabion and stilling basin, and forming the final construction parameters; S4: Determining the construction process according to the construction parameters output in S3; S5: Installing the guide gabion downstream of the stilling basin according to the construction process; After the guide gabion is installed, the working bridge is installed and constructed. This invention uses a three-dimensional river flow coupling model for simulation calculation, achieving rapid construction of long-span working bridges with the lowest theoretical design cost and efficient scheme determination time, improving the scour resistance under long-span river conditions, and preventing problems such as water erosion, soil loss, and slope collapse.

The invention discloses an anti-seepage ecological protection slope for farmland erosion gully treatment, and relates to the technical field of farmland treatment. The invention aims to solve the problems that in the prior art, a honeycomb ecological protection slope for preventing and treating farmland erosion gullies is good in ecological property and not good enough in stability, and landslide and collapse often occur; and traditional gabion slope protection modes and the like are adopted, the stability is good, however, farmland is prone to being damaged when erosion gabions are prevented and controlled, and the ecological property of the farmland is damaged. The anti-seepage ecological protection structure is formed by sequentially connecting an anti-seepage ecological protection section, a transition section, a stilling pool section and a confluence reinforcing section. The water inlet end of the erosion gully is provided with an anti-seepage type ecological protection section composed of honeycomb ecological protection slopes and then is a transition section composed of Reynolds protection slopes, and the rear portion of the transition section is sequentially connected with a stilling pool section composed of gabion protection slopes and a confluence reinforcing section. And the stilling pool section is provided with a stilling ditch. The method is used for farmland erosion gully treatment.

The invention discloses an auxiliary energy dissipater for improving the energy dissipation effect of a sudden-expansion drop sill stilling pool, and belongs to the technical field of high-speed water flow flood discharge and energy dissipation. A shunting middle pier and two side piers are arranged in the falling stilling pool along the water flow direction; the two side piers are arranged on the two side walls of the drop-cutting stilling pool respectively, and two symmetrical discharge grooves are formed by the two side piers and the diversion middle pier. Water flow passing through the submersible perforation hole forms two strands of longitudinally stretched water flow in the two discharge grooves. According to the auxiliary energy dissipater for improving the energy dissipation effect of the sudden-expansion drop sill stilling pool, the problems that in the prior art, a sudden-expansion drop sill stilling pool is unstable in flow state, large in wave, low in energy dissipation rate and the like can be effectively solved.

The utility model relates to the technical field of water conservancy, in particular to a stilling pool with a diversion energy dissipation structure, which is characterized in that an inclined scale slope is arranged at the upper part of an inclined gentle slope, a plurality of water retaining edges are fixedly arranged on the inclined scale slope, convenient cleaning components are arranged on the water retaining edges, and diversion partition plates are fixedly arranged at the upper part of a pool bottom; the left side and the right side of the diversion partition plate are connected with the inclined gentle slope and the tail ridge correspondingly, the first ridge strips are fixedly arranged at the positions, located on the left side and the right side of the diversion partition plate, of the upper portion of the pond bottom correspondingly, and first circulation openings are formed in the positions, located on the left sides of the first ridge strips, of the diversion partition plate; the second ridge strips are fixedly arranged on the left side walls and the right side walls of the multiple flow dividing partition plates correspondingly, and second circulation openings are formed in the positions, located on the left sides of the second ridge strips, of the flow dividing partition plates, so that flow dividing energy dissipation can be achieved, all the flow dividing parts can circulate mutually, all the flow dividing parts are fully rubbed and turbulent, the water flow energy dissipation effect is improved, cleaning is convenient, and the service life is prolonged. Good downstream water quality is kept.

The application discloses a concave-shaped special-shaped stilling basin and belongs to the technical field of flood discharge and energy dissipation in water conservancy and hydropower engineering, and solves the problem of insufficient energy dissipation of the existing stilling basin. The technical scheme is as follows: the concave-shaped special-shaped stilling basin, the side walls of the four sides of the stilling basin are respectively an upper side wall on the upstream side, a lower side wall on the downstream side, a left side wall on the left bank side and a right side wall on the right bank side, the top of the upper side wall is a differential type flip bucket, the upper side wall, the left side wall and the right side wall are all provided with at least one A-shaped groove which is respectively convex to the upstream direction, the left bank direction and the right bank direction, the top of the lower side wall is provided with a water outlet inclined surface which is inclined upward along the water flow direction, the lower side wall is further provided with at least one B-shaped groove which is convex to the downstream direction, and the drop area of the bottom plate of the stilling basin is provided with at least one C-shaped groove. The application weakens the water flow energy in the stilling basin, reduces the bottom plate pulsation pressure and the bottom flow velocity, reduces the scouring effect of the water flow, eliminates the secondary water jump of the water flow out of the stilling basin and the uneven transverse impact water flow and the like.

The application discloses a stilling basin bottom plate and a stilling basin, and belongs to the stilling basin field. The stilling basin comprises a stilling basin bottom plate, which is used for draining seepage water, providing a stilling direction for water flow, and providing a stilling place for the water flow; a water inlet unit, which has a water distribution port, a water distribution port outlet, a water distribution groove, and comprises a water inlet protrusion; the water distribution port is arranged on the surface of the water inlet unit; the water inlet protrusion is arranged at a distance below the water distribution port; the water outlet is arranged below the water inlet protrusion; and the water distribution groove is connected with the water distribution port and the water distribution port outlet. A water outlet unit is arranged, and the water flow passes through the outlet after being still, and flows to the downstream. The application changes the flow direction of the water flow through the water inlet protrusion and the water distribution groove, so that the water flow collides to be still, and the shape of the stilling basin bottom plate is designed as a curved surface, so that the water flow is changed into turbulent flow, and the water flow is still.