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

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 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.

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 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.