Reservoir silt-preventing laying method

Abstract

The invention discloses a reservoir silt-preventing laying method which is characterized by including the steps of firstly, using upstream cofferdams and diversion tunnels during reservoir construction as facilities for silt conveying during reservoir operation; secondly, selecting a side on the upstream of a dam to building a silt blocking reservoir cofferdam to allow silt in a river to deposit in the silt blocking reservoir; thirdly, setting a plurality of silt conveying branch pipes on a sand conveying main pipe, disposing an ultrasonic depth meter and an electric valve on each silt conveying branch pipe to measure silt elevation, and opening the electric valves by turns to remove and discharge silt; fourthly, allowing a control cabinet to be respectively connected with the ultrasonic depth meters and the electric valves through cables, collecting the silt elevation of each branch silt conveying pipe in real time by the control cabinet, and automatically opening the electric valve of the branch silt conveying pipe high in silt elevation to discharge the silt; in the meantime, accepting operation instructions to discharge the silt. By the reservoir silt-preventing laying method, the active effect of preventing reservoir siltation can be achieved, and a reservoir can be effective continuously and stably.

Description

technical field [0001] The invention belongs to the technical field of water conservancy engineering, and in particular relates to a reservoir anti-silting layout method for preventing sediment deposition in a reservoir, ensuring normal operation of the reservoir and fully exerting benefits. Background technique [0002] More and more attention has been paid to the problem of sedimentation in reservoirs. This is not only due to the reduction of effective storage capacity and shortened service life of reservoirs due to sedimentation, but also because the good dam sites with abundant water are almost completely exhausted. With the continuous development of economy and society, the demand for water resources and clean hydropower resources is increasing, and there is a situation of new water conservancy projects marked by dam construction. Taking new reservoirs as an example, resettlement costs are very high. For example, the resettlement cost of the Three Gorges Project account...

AI Technical Summary

Problems solved by technology

[0008] At present, the common reservoir silting prevention and control methods mainly include three types: reducing storage, multi-discharging storage, and mechanical dredging, that is, treatment after the sediment has entered the reservoir and silted up, but it has not been considered in the construction layout. Technical solution for discharging sediment to the downstream in the water area

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