Reservoir dredging pipe system and layout method thereof

Abstract

The invention discloses a reservoir dredging pipe system and a layout method of the reservoir dredging pipe system, belonging to the technical field of a water conservancy project. The reservoir dredging pipe system is characterized in that a preventive dredging pipe system and a restorative dredging pipe system are arranged according to different stages and shapes of reservoir sedimentation, wherein the preventive dredging pipe system is composed of main pipelines and a branch pipe bank and is arranged before the water is stored in a reservoir; the main pipelines are arranged on both sides of the river; a downstream end is connected with a culvert pipe under a dam; the branch pipe bank is transversely arranged on a water return section forming a delta; the branch pipe bank is uniformly distributed with sand discharge holes to intercept discharge of sediment on a delta scarp slop and prevent the delta from advancing; a restorative dredging pipe is arranged in the reservoir for forming deposit and is composed of the main pipelines which penetrate the deposit area, and of which the downstream end is connected with the culvert pipe under the dam or an underwater tunnel, branch pipes transversely connected to the main pipelines, and a tube connected to the branch pipes; the tube opening and a sand suction hole move to dredging, and a dredging area is covered; an underwater dredging pipeline system is prefabricated by segments on land and in towing floating connection; a water dredging pipeline system is arranged in a pipe ditch on the deposit surface, and sinks to the bottom of the reservoir and the bottom of ditch to dredge after being filled with water and exhauste, and the storage capacity of the reservoir is restored.

Description

Technical field [0001] The invention relates to the technical field of water conservancy engineering. Background technique [0002] It is a common phenomenon that silt collects into reservoirs with water flow to form siltation. In order to slow down the siltation of the reservoir and prolong the life of the reservoir, traditional reservoir dredging usually adopts hydraulic methods such as clearing and desilting, density flow desilting, and mechanical methods such as mechanical pumping and vehicle pulling. However, hydraulic dredging consumes a huge amount of water resources, and it is not suitable for the basic form of reservoir siltation like delta. Mechanical dredging not only consumes a lot of energy, but is also limited by water surface and water depth conditions, so the cost is high and the amount of dredging is limited. No matter what traditional dredging method is adopted, the recurring problem of reservoir dredging and silting cannot be avoided. Summary of the inventio...

AI Technical Summary

Problems solved by technology

However, the amount of water resources consumed by hydraulic dredging is huge, and it is not suitable for the basic form of reservoir sedimentation such as a delta

Mechanical dredging not only consumes a lot of energy, but also is limited by water surface and water depth conditions, so the cost is high and the amount of dredging is limited

No matter what kind of traditional dredging method is adopted, the repeated problems of reservoir dredging and sedimentation cannot be avoided