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.

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 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.