37results about How to "Improve flood discharge capacity" patented technology

The invention discloses an improved regulation and storage system for urban road rainwater collection and green land conservation. The improved regulation and storage system comprises a control system, a drainage ditch, a coarse filtration tank, a fine filtration tank, a regulation and storage tank and a back-flushing device, wherein the drainage ditch, the coarse filtration tank, the fine filtration tank, the regulation and storage tank and the back-flushing device are communicated in sequence, a frame-shaped filtration grille for filtering the rainwater collected by a rainwater perforated strainer is hung at the top end of a wall body of the drainage ditch, a filtration screen is arranged at the connecting position of the drainage ditch and the coarse filtration tank, a seepage well is communication with the regulation and storage tank through a drainage pipe, a filtration structure for filtering the rainwater is arranged at the top end of the seepage well, and the bottom of the seepage well is installed in a sponge water-storage layer. The regulation and storage tank comprises a side wall, a bottom wall and a plurality of watering water pipes, the back-flushing device comprises a water inlet pipe, a water pump, a back-flushing pipe and a blow-off pipe, and the bottom end of the coarse filtration tank and the bottom end of the fine filtration tank are communicated through a mud discharging pipe. The control system comprises a control unit, a magnetic valve and a plurality of humidity sensors. A liquid level sensor is installed on the upper surface of the section, where the regulation and storage tank is located, of an overflow pipe. The water pump, the humidity sensors and the liquid level sensor are all connected with the control unit.

The invention mainly discloses a riverway chain bucket type dredging ship and a dredging construction method thereof. According to the technical scheme, the riverway chain bucket type dredging ship comprises a ship body, a control chamber, a retiring room, a support, at least two chain bucket conveying mechanisms and a sludge collecting bin. A lifting mechanism is arranged between each chain bucket conveying mechanism and the support. Moving devices and salvage devices connected with the moving devices are arranged on the two sides of the ship body, and a salvage basket and a power paddle are arranged on the rear side of the ship body. The method comprises the first step of construction preparation, the second step of chain bucket type dredging ship position adjustment, the third step of chain bucket conveying mechanism descending position control, the fourth step of dredging work conduction, the fifth step of sludge treatment work and the sixth step of subsequent work. By means of the method, sludge at the river bottom can be efficiently removed, objects floating on the river surface can be removed as well, suspension pollutants brought from the sludge during salvage work are eliminated, and a riverway is dredged; and the flood discharge capacity of the riverway is improved, the water quality is improved, and water pollution is reduced.

A diversion work for river gate dams and spillways comprises an integrated platform made of two segments; wherein, the inside wall of the first segment platform is an circular conical surface; the outside wall is a circular cylindrical surface; both the top face and the bottom face are planes; the inside wall of the second segment platform is a torsion face, and the outside wall is a tangential plane against the circular cylindrical surface of the first segment platform; both the top face and the bottom face are also planes. In installation, the tail of the transition torsion face of the second segment platform is tangentially connected with side walls of an inlet side hole on a river gate dam or a spillway. The diversion work can effectively resolve the problem of transiversal shrinkage of water flow in front of inlets of the river gate dam and the spillway. To further improve water flow status, it is necessary to add a vertical guide dam; one end of the vertical guide dam is linked to the tail of the transition torsion face of the second segment platform; the other end is connected with the side wall of the river gate dam or the spillway inlet side hole. In a plurality of projects, the first segment platforms can be extended to connect with the bank, for which the surrounded lands can also be utilized for other purposes.

The invention relates to a channel girder composite truss anti-falling structure, comprising a channel girder, a steel truss beam, a transverse support and a steel grille. Vertical longitudinal steeltruss beams are arranged above the ribs on both sides of the groove beam, transverse supports are arranged between the top of the steel truss beams on both sides, and steel grille, groove beam, steeltruss beams, transverse supports and steel grille are arranged above the transverse supports to form a protection space with a rectangular frame shape in cross section. The structure can effectively prevent the falling rocks in the steep canyon area from intruding into the railway gauge, the construction is simple and easy, and provides effective guarantee for the operation safety.

The invention relates to a drainage structure of a sunken plaza, and belongs to the field of building construction. The structure comprises a bottom plate, a water storage ditch and a retaining wall,multiple sets of flood discharge areas are mounted on the bottom plate in an evenly spaced manner, each flood discharge area comprises multiple drainage grooves formed in the bottom plate, the multiple drainage grooves are formed in the same straight line, a top plate is arranged in each drainage groove, the size of the top plates is matched with the size of the drainage grooves, the top faces ofthe top plates are flush with the top face of the bottom plate, a confluence pipe is arranged between two adjacent sets of flood discharge areas, and is located below the bottom plate, a drainage opening is formed in the inner side wall of each drainage groove, the drainage openings communicate with drainage pipes, the ends, away from the drainage grooves, of the drainage pipes communicate with the confluence pipe, drive devices used for driving the top plates to move to the positions of the drainage openings are arranged in the drainage grooves, and the drainage structure has the effect of conveniently improving the flood discharge capacity.

The embodiment of the invention provides an account opening task processing method, which is characterized in that an account opening request sent by a user terminal is converted into asynchronous task processing, and the asynchronous task processing is periodically delivered to a multi-layer task processing platform for distribution processing. Therefore, account opening processing has a retry capability, the user experience is ensured, the tasks can be uniformly distributed to all application service equipment for execution through the distribution capability of the multi-layer task processing platform, and the overall processing capability of the system is greatly improved.

The invention provides a dam body device for treatment of an urban artificial watercourse. The dam body device comprises a first dam body, a first plugging device, an aquatic plant planting zone and a blocking device, wherein the first dam body extends in the width direction of the urban artificial watercourse; the lower part of the first dam body is provided with a first drainage channel; the side surface, facing the downstream part of the urban artificial watercourse, of the first dam body is a slope surface; a plurality of first salient points are arranged on the slope surface; the first plugging device is arranged to conduct or cut off the first drainage channel; the aquatic plant planting zone is arranged at the downstream part of the first dam body; the aquatic plant planting zone is arranged for planting aquatic plants; the blocking device is arranged at the downstream part of the aquatic plant planting zone, and is provided with at least one blocking unit; and the blocking units are provided with first fish screens, activated carbon fiber filter cloth, chitosan fiber filter cloth and second fish screens which are sequentially arranged in the water flowing direction. The dam body device is simple in structure, can isolate algae floating objects like blue-green algae in a water body, can block and remove parts of organic substances and heavy metals, and has an excellent treatment effect.

The invention mainly discloses a riverway chain bucket type dredging ship and a dredging construction method thereof. According to the technical scheme, the riverway chain bucket type dredging ship comprises a ship body, a control chamber, a retiring room, a support, at least two chain bucket conveying mechanisms and a sludge collecting bin. A lifting mechanism is arranged between each chain bucket conveying mechanism and the support. Moving devices and salvage devices connected with the moving devices are arranged on the two sides of the ship body, and a salvage basket and a power paddle are arranged on the rear side of the ship body. The method comprises the first step of construction preparation, the second step of chain bucket type dredging ship position adjustment, the third step of chain bucket conveying mechanism descending position control, the fourth step of dredging work conduction, the fifth step of sludge treatment work and the sixth step of subsequent work. By means of the method, sludge at the river bottom can be efficiently removed, objects floating on the river surface can be removed as well, suspension pollutants brought from the sludge during salvage work are eliminated, and a riverway is dredged; and the flood discharge capacity of the riverway is improved, the water quality is improved, and water pollution is reduced.

The invention discloses a crank-arm steel dam gate comprising a steel dam gate leaf mounted between left and right side walls. The bottom of the steel dam gate leaf is connected with a dam body through a bottom cross shaft, and the steel dam gate leaf swings around the bottom cross shaft; water stopping is achieved when the steel dam gate leaf swings upwards, and water discharging is achieved whenthe steel dam gate leaf swings downwards. The crank-arm steel dam gate is characterized in that the steel dam gate leaf at the upstream face and / or the two ends of the bottom cross shaft are respectively connected with front extending crank arms, and a crank arm hinge is arranged on each crank arm; each crank arm hinge is connected with an opening and closing device which comprises a telescopic opening and closing oil cylinder, a water isolating plate is arranged on the steel dam gate leaf to isolate the crank arm exposed to the front of the upstream face from river water, the opening and closing devices are located at the rear end of the water isolating plate, and water sealing strips which are in contact with the left and right side walls are arranged on the water isolating plate. The crank-arm steel dam gate completely changes the basic shape and characteristics of a conventional steel dam gate, the defect which is not solved at present of the steel dam gate is overcome, and the crank-arm steel dam gate has important significance for popularization and application of the steel dam gate on water conservancy facilities.

The invention relates to a riverway truss type anchor pulling anti-floating device. One or more trusses is / are distributed in the riverway vertical water flow direction; each truss comprises concrete piers, concrete foundation blocks, anchor bars, a steel wire rope and a steel tube truss composed of steel tubes distributed in different space direction; two concrete piers are arranged in each riverway truss type anchor pulling anti-floating device, the concrete piers are distributed on the upstream side in a riverway in the direction perpendicular to the water flow at a certain distance intervals, the anchor bars are embedded in the concrete piers, the concrete foundation block are distributed on the downstream side of the concrete piers in a matrix shape, and the bottom ends of parts of steel tubes forming the steel tube truss are embedded into the concrete foundation blocks; one ends of the steel wire ropes are connected with the anchor bars, and the other ends of the steel wire ropes are connected with the steel tubes. The riverway truss type anchor pulling anti-floating device can be used for construction in complex terrain, and has the beneficial effects of being convenient to construct, environment-friendly, practical, wide, good in floating object blocking effect, safe and economical.

The invention belongs to the technical field of water conservancy projects, and particularly relates to an overflow dam with a flood discharge function for a water conservancy project. When the overflow dam is used and the upstream water level is full during the flood peak period, water blocked by the overflow dam can be completely released only by slowly lifting an inserting plate, when the inserting plate is lifted, the water flow at the bottom impacts on a first rotating wheel, at the moment, a rope winding wheel starts to wind a rope, then a lifting force is provided for the inserting plate, and the problem that the inserting plate is lifted in a more labor-saving mode is solved. According to the scheme, the overflow dam comprises a dam body, wherein the dam body is of a prism-shaped structure with a cavity; a notch is reserved in the middle of the dam body; T-shaped sliding grooves are formed in the opposite sides of the notch; and the same inserting plate with a flat cuboid structure with a cavity is connected between the two T-shaped sliding grooves in a sliding mode. The overflow dam is novel in structure, good in drainage smoothness performance and good in silt dischargingeffect, the high water level can be reduced in time, and the flood discharge capacity and speed are improved.

The invention relates to the technical field of hydraulic and hydroelectric engineering, and aims to provide a novel grading lifting type water retaining dam which is stable in supporting and does not affect lifting of a gate. According to the technical scheme adopted by the novel grading lifting type water retaining dam, the bulkhead gate is composed of a front steel plate and a rear steel plate, and the front steel plate and the rear steel plate are integrally connected through two side plates. The top of the front steel plate is provided with a plurality of rod recovery openings, the rear steel plate are provided with a plurality of rod penetrating grooves, and the rod recovery openings correspond to the rod penetrating grooves one by one. Each rod penetrating groove is composed of two parallel and vertical strip-shaped groove bodies which extend from the middle of the rear steel plate to the edge of the top of the rear steel plate. A supporting assembly is arranged at each group composed of one rod recovery opening and one rod penetrating groove correspondingly, and comprises supporting rods and hinge supports fixed to a downstream bed. The novel grading lifting type water retaining dam is stable in supporting and does not affect lifting of the gate.

The invention provides a method for constructing a building type flood bank and reclaiming and utilizing a river bottomland. According to the method, a row of closely connected buildings with a flood blocking function are constructed as the building type flood bank on a stream segment with bottomland developed and cultivated land and villages on the bottomland and close to the drainage line of the river on the basis of whole line dredging of a lower course of the river. After the flood bank is constructed, the bottomland is reclaimed into permanent safe high-standard farmland or a new urban district and high-tech industry park with high land additional value. Compared with the traditional rockfill dam, the building type flood bank has the advantages of a high flood resisting safety factor and a high investment return rate. The functions of navigationon the riverway, irrigation and power generation through river water are realized, the distance between the dams on the two banks is shortened and the cost of constructing the river-crossing bridge is reduced to 5-20% of the original cost. The new type urbanization and the river pollution prevention are realized in the flood plain. The original dirty, disorderly and bad bottomland environment is turned into a brand new beautiful place.

The invention discloses a green corridor type regulating and storing system of a wandering river in an arid area. The green corridor type regulating and storing system includes a river channel regulating and storing belt arranged on a riverbed and slope stabilization belts arranged on river banks on the two sides. The river channel regulating and storing belt comprises aquatic vegetation, a cobblestone layer, a permeable paving layer, a vegetation planting soil layer and a water storing and collecting layer which are arranged sequentially from top to bottom. Each slope stabilization belt comprises a sand-proofing grid laid on the corresponding river bank and vegetation planted on the corresponding sand-proofing grid. When a flood season comes, the river channel regulating and storing beltin the green corridor type regulating and storing system provides a certain storage space and increases the capacity of flood discharging of a river channel. When a drought period comes, the purpose of recharging ecological base flow is achieved through water resources stored in the river channel regulating and storing belt.

The invention discloses a method for creating an arch dyke line of a river confluence area. A conventional river confluence model is established and the lengths L, the widths b and the water depths h of a flow separation zone of the river confluence area are calculated under different confluence rates RQ through Fluent numerical simulation software, curve fitting is conducted, the relation between the lengths, the widths and the depths of the flow separation zone and the confluence rates RQ is created, testing arch dyke line river confluence models under the different confluence rates RQ are established, the water depths h' of the testing arch dyke line river confluence areas corresponding to the different confluence rates RQ are calculated, the relation between the water depth reduction rates (h'-h) / h and the confluence rates RQ is created, and according to the relation between the water depth reduction rates (h'-h) / h and the confluence rates RQ, the relation between L / Bm and the RQ and the relation between b / Bm and the RQ, the confluence rate enabling the water depth reduction rate to meet the actual engineering requirement and enabling the construction project amount to be minimum is selected to calculate the 1 / 4 ellipse arch dyke line satisfying the elliptic equation shown in the specification. The arch dyke line can be applied to the river confluence area with the confluence angle between the main river and the branch river being 90 degrees.

The invention relates to the technical field of city drainage, in particular to an improved city drainage system. An original drainage system comprises a water inlet, a rainwater strainer A, a drainage pipe and a sewage branch pipe, and a connecting opening, a regulating device, a water storage opening, a water storage pond, a pond base, a water outlet pipe and an outdoor water pump are added by the improved city drainage system. The connecting opening is formed in the bent portion of the drainage pipe and the water inlet, the regulating device is placed in the water inlet, a rubber cover plate is limited in a cover plate groove, the cover plate groove is connected with the water storage pond water inlet, and the water outlet pipe is arranged at the bottom of the water storage pond. The original city drainage system is improved, the original drainage pipe is made full use of, an old pipe does not need to be detached, the road damage range is small, and the improved city drainage systemhas the huge advantage of saving the cost; when the rainfall amount is too large, a water storage function is opened by the water storage pond, the flood drainage capability of an underground pipe isimproved, water resources in the water storage pond can be used as firefighting water or greening water through the outdoor water pump, and the utilization rate of the water resources is increased.

The invention provides a shoal wetland construction method considering earthwork volume balance and habitat diversity, and belongs to the technical field of ecological protection and restoration, and the shoal wetland construction method comprises the following steps: 1) conducting restoration area identification, specifically carrying out identification analysis based on remote sensing data in combination with ecological function partition and landscape pattern current situation; 2) carrying out field investigation on the restoration area mainly aiming at the terrain, the size of the embankment and the growth condition of local plants; 3) selecting a terrain scheme, specifically selecting a terrain construction scheme, and selecting a size; 4) building a terrain; and (5) conducting vegetation three-dimensional configuration, wherein the vegetation is considered from the perspective of emergent aquatic plants, floating plants and submerged plants. Through the design, a land and water transition zone is formed by utilizing terrain construction aiming at the reconstruction problem of the lake dam, so that the flood discharge capacity of the lake is improved, the wetland habitat of the lake is restored, the biological diversity is improved, the stability of an ecological system is improved, and the ecological problem of the hydro-fluctuation zone caused by water level change can be prevented and relieved.

The invention provides a rainwater collection diversion and strata conservation regulation and storage system comprising a water collection tank, a filter tank, a sedimentation basin, a regulation and storage pool and a control system; the water collection tank is connected with the filter tank, and a filter grid is arranged on a connecting portion between the water collection tank and the filter tank; a water exit of the filter tank is connected with the sedimentation basin, and a filtering net is arranged on a connecting portion of the two; the sedimentation basin is connected with the regulation and storage pool through a rainwater inflow pipe arranged above a side wall; the side wall of the regulation and storage pool is provided with an overflow pipe and water diffusion pipes uniformly arranged around the overflow pipe, wherein the overflow pipe is connected with a municipal downpipe net, and the water diffusion pipes extend outwards to surrounding soil by taking the regulation and storage pool as a center; the rainwater collection diversion and strata conservation regulation and storage system is controlled by the control system, and can collect, purify, store and divide road rainwater, thus realizing peak clipping, regulating, storing, strata conserving and water ecology restoring purposes, and providing important reference meanings for construction of a sponge city.

The invention relates to an energy-saving combined double-body ship for cleaning river water bottom sludge and a corresponding river silt removing method. In order to fill up the blank in the prior art, the energy-saving combined double-body ship for cleaning the river water bottom sludge comprises N rake assemblies, a main hull and an auxiliary hull, wherein each rake assembly comprises a cutterhead, a connecting plate and a tail rake, the middle section and the rear part of the connecting plate are hinged to a front control rod and a rear control rod respectively, the upper parts of the front control rod and the rear control rod are bound and fixed to handrails on the side wall of the outer side of the auxiliary hull through binding ropes, a pull rope is tied on the front part of the cutter head of each rake assembly, and the other end of the pull rope is tied on the inner wall of the main hull, wherein N is a positive integer, N is greater than or equal to 3 and less than or equalto 100, the length of the control rod is larger than twice of the depth of the river water to be cleaned, the length of the pull rope should be around the bottom of the auxiliary hull, and the rake assembly can still be moved to the auxiliary hull. The method has the advantages of being low in energy consumption and low in cost, is suitable for serious deposit rivers, and is especially suitable for silt removing of different river segments in the middle and lower streams of the Yellow River.

The invention relates to the technical field of hydropower stations, specifically to a separation and combination type plant system of a through-flow hydropower station. The system adopts the following method steps: (1) a traditional through-flow set and such parts as a generator pier, an electric room, an accessory equipment room and a booster station are partitioned; (2) the through-flow set and the generator pier are placed in a riverway, and a water retaining gate dam is arranged above the through-flow set and the generator pier; and (3) in a power generation water head range, the water retaining gate dam blocks water, and the upper part of a concrete pier of the set is exposed out of the water surface. The system uses the characteristic of underwater operation of a through-flow water turbine generator set to divide a traditional main plant, can combine the set pier, the electric room, the accessory equipment room, the booster station and the like which can be in and out of water, enables all parts to be independent from each other and flexibly arranged, can improve the flood discharging capacity of the through-flow hydropower station, reduces the construction cost, shortens the construction period, and improves the plant stability.

The invention discloses a construction method for constructing an overflow weir surface based on an overflow weir body and a combined template. The construction method is applied to the overflow weir, the overflow weir comprises the overflow weir body and a pouring body, and the surface of the pouring body is the overflow weir surface. The pouring body comprises a downstream pouring body. The construction method at least comprises the following steps that the overflow weir body is built based on the design form of the pouring body; on the basis of the overflow weir body, a plurality of first templates are fixed to the downstream side of the overflow weir body and connected to form a curved surface template set, and a first reserved gap is reserved between the curved surface template set and the overflow weir body; after the curved surface template set is connected to the overflow weir body, a first slope angle formed by the curved surface template set and a horizontal plane is gradually changed in the height direction; concrete is poured into the first reserved gap, so that the downstream pouring body is formed on the downstream side of the overflow weir body, and the downstream overflow weir surface is constructed. The method solves the technical problem that in the construction process of the special-shaped curved surface overflow weir, the construction quality is difficult to control.

A municipal drainage ditch and a construction method thereof belong to the field of municipal drainage. The interior of the trench body is laid with a fine sand layer, a crushed stone layer, and a cement cushion from bottom to top; the bottom plate II is fixed at the bottom of the shaft II, and the lower end of the bottom plate II is provided with a gravel layer and a fine sand layer; The masonry layer is fixedly connected to the annular backing plate, and the masonry layer is attached to the inner wall of the shaft II; the cement layer is arranged on the inner wall of the masonry layer; the manhole cover II is movably connected to the upper end of the masonry layer; The pipe is laid on the ground, and one end of the pipe communicates with the trench body, the pipe passes through the shaft II, and the middle part of the pipe communicates with the shaft II. The present invention is provided with shaft II, and the lower end of the annular backing plate of shaft II is directly connected with the soil, and after rainwater enters shaft II, it can directly infiltrate into the deep soil, increasing the flood discharge capacity of the drainage ditch; , the household garbage can be directly flowed into the shaft I through the pipe, so as to reduce the random drifting of the household garbage with the rainwater.

The invention discloses a riverway intersection water flow stagnant area wedge cone. According to a building method of the cone, under the main and branch water flow incoming representative flow condition, SMS numerical value simulation software is utilized for calculating a two-dimensional flow velocity field of a main and branch water flow intersection area under the natural terrain condition, flow velocity contour maps at the different water level elevation positions are extracted, contour lines equal to the sediment incipient motion critical flow velocity Uc in the different water level elevation flow velocity contour lines are determined through the sediment incipient motion critical flow velocity Uc, and the contour lines are overlapped to form a wedge cone structure; a connection line of flow velocity contour line intersection points with the main and branch water flow velocity equal to the Uc in the lowest water level process and shoreline intersection points is defined as a y axis, section subdivision is carried out on the stagnant area along the y axis, water levels of the contour lines on the section are extracted to be fitted, the section water levels meet a parabolic equation that z is equal to a ax<2>+bx+c, section modulus a, b and c build a relation with the y axis, and the structural terrain elevation of the wedge cone is obtained. The wedge cone can effectively reduce the jacking effect of the intersection area, the water flow in the intersection area is uniform, and the wedge cone is suitable for the flow rectification engineering of the intersected riverway water flow stagnant area

The invention discloses a rainwater treatment and storage system capable of being applied to sponge cities. A filtering grating is arranged on the top of a drainage ditch, and the lower end of the filtering grating is communicated with an artificial wetland area; the artificial humid area comprises a rainwater retention area and a wetland enclosing wall arranged on the edge of the rainwater retention area, and a permeable geotechnical cloth is arranged on the outer surface of the bottom face of the rainwater retention area; a buffer pool is communicated with a rough filtration pool through a flow guiding pipe, and a drainage pipe communicated with the rainwater retention area is connected to the flow guiding pipe; an overflow pipe connected with a municipal rainwater pipe network is arranged at the upper end of a reservoir, the reservoir comprises an inner side wall and an outer side wall, and a sandwich layer communicated with a water storage cavity of the reservoir is formed between the inner side wall and the outer side wall; multiple drainage holes communicated with the sandwich layer are evenly formed in the outer side wall, and the outer side wall is wrapped in the permeable geotechnical cloth; a control system comprises a control unit, an electromagnetic valve, a turbidity sensor, a liquid level sensor and a humidity sensor, and the humidity sensor, the liquid level sensor and the electromagnetic valve are all connected with the control unit.

The invention relates to a double-layer n-shaped pier and longitudinal crossbeam falling rock preventing structure. The structure comprises lower-layer three-column type n-shaped piers transversely constructed above a railway bridge foundation platform, and a railway beam is erected between the two longitudinally-adjacent lower-layer three-column type n-shaped piers; and upper-layer double-columntype n-shaped piers located above the railway beam are transversely constructed on pier tops of the lower-layer three-column type n-shaped piers, a longitudinal crossbeam is arranged between pier topsof the two longitudinally-adjacent upper-layer double-column type n-shaped piers, and a buffer layer is laid at the top of the longitudinal crossbeam. Falling rocks can be effectively prevented frominvading into a railway clearance, a railway pier foundation and a protective structure foundation are combined into a whole, occupation of the lower space is reduced, and the total work amount is reduced. The falling rock protection advantage is obvious especially in a section with a short bridge sandwiched between two tunnels in a steep V-shaped groove area.

The invention relates to a riverway truss type anchor pulling anti-floating device. One or more trusses is / are distributed in the riverway vertical water flow direction; each truss comprises concrete piers, concrete foundation blocks, anchor bars, a steel wire rope and a steel tube truss composed of steel tubes distributed in different space direction; two concrete piers are arranged in each riverway truss type anchor pulling anti-floating device, the concrete piers are distributed on the upstream side in a riverway in the direction perpendicular to the water flow at a certain distance intervals, the anchor bars are embedded in the concrete piers, the concrete foundation block are distributed on the downstream side of the concrete piers in a matrix shape, and the bottom ends of parts of steel tubes forming the steel tube truss are embedded into the concrete foundation blocks; one ends of the steel wire ropes are connected with the anchor bars, and the other ends of the steel wire ropes are connected with the steel tubes. The riverway truss type anchor pulling anti-floating device can be used for construction in complex terrain, and has the beneficial effects of being convenient to construct, environment-friendly, practical, wide, good in floating object blocking effect, safe and economical.

The invention provides a dam body device for harnessing urban artificial rivers. It includes: the first dam body, which is extended along the width direction of the urban artificial river; the lower part of the first dam body has a first drainage channel; the side of the first dam body facing the downstream of the urban artificial river is a slope surface, and the slope surface A plurality of first bumps are arranged on the top; the first blocking device is configured to conduct or cut off the first drainage channel; the aquatic plant planting area is arranged downstream of the first dam body and is configured to plant aquatic plants; and blocking facilities , arranged downstream of the aquatic plant planting area, and the arresting facility has at least one arresting unit, and each arresting unit has a first fish wire mesh, an activated carbon fiber filter cloth, a chitosan fiber filter cloth and a second fish wire mesh. The dam body device has a simple structure, can isolate algae floating objects such as cyanobacteria in the water body, intercept and remove some organic matter and heavy metals, and has excellent treatment effect.

The invention provides a flood discharge structure of a concrete gravity dam. The structure is arranged at an overflow dam section of the concrete gravity dam. The flood discharge structure comprisesa water retaining wall of the overflow dam section, an overflow wall distributed at the upstream side of the water retaining wall, an overflow groove formed in the downstream side of the overflow wall, a water collecting pool formed at the upstream side of the water retaining wall, a stilling sill arranged at the bottom of the water collecting pool, and a vertical shaft type spillway formed in theoverflow dam section. The vertical shaft type spillway comprises a vertical shaft flood discharge section, a horizontal flood discharge section and a connecting flood discharge section connected between the vertical shaft flood discharge section and the horizontal flood discharge section; the upper end of the vertical shaft flood discharge section extends to the bottom of the water collecting pool and is communicated with the water collecting pool; and an outlet of the horizontal flood discharge section is located in a downstream river channel. According to the flood discharge structure of the concrete gravity dam, by arranging the overflow wall, the width of a water inlet front edge can be increased, and the flood discharge capacity is improved; and discharged water flow is collected through the water collecting pool, so that the width of the discharged water flowing into a river is reduced, energy dissipation is conducted on the discharged water flow through the stilling still and the vertical shaft type spillway, and scouring of the discharged water flow to a downstream side slope is reduced.

The invention provides a shoal wetland construction method considering the balance of earthwork and habitat diversity, belonging to the technical field of ecological protection and restoration. Identification and analysis based on remote sensing data; 2) Field investigation of the restoration area, mainly focusing on the topography, the size of the embankment and the wall and the growth of local native plants; 3) Topographic scheme selection, select the terrain construction scheme, and select the size; 4) Terrain construction; 5 ) The three-dimensional configuration of vegetation, the vegetation is considered from the perspective of emergent plants, floating plants and submerged plants. Through the above design, the present invention aims at the transformation of lake dykes and ridges, uses terrain to create a water-land transition zone, improves lake flood discharge capacity, restores lake wetland habitat, enhances biodiversity, improves ecosystem stability, and can prevent and reduce Ecological problems of ebb and flow zones caused by changes in water level.

The invention discloses a rainwater garden beneficial to improvement of biological diversity and a construction method thereof. The rainwater garden comprises a foundation pit, wherein the foundation pit is sequentially filled with a planting soil layer, a gravel layer and a pebble layer, a water drainage pipe and a water guide pipe are buried in the pebble layer, the water drainage pipe is communicated with a municipal pipe network, and a plurality of water inlet holes are formed in the water drainage pipe; the water guide pipe is connected with a water collection tank located under an eave; and the planting soil layer is used for planting various ornamental plants, the gravel layer and the pebble layer are used for filtering rainwater, the rainwater is accumulated while the redundant rainwater is guided to be drained to the municipal pipe network, and normal growth of the ornamental plants is guaranteed. According to the rainwater garden, a small ecological circulation system is formed through reasonable arrangement of a plurality of functional layers, a place for the small animals such as insects to live is provided, and meanwhile the ornamental value of the garden can be improved; and the flow speed of the rainwater entering the municipal pipe network can be adjusted, urban waterlogging is relieved, the rainwater is recycled, and the water consumption of the garden is reduced.