Prevention and treatment system of large spoil area in debris flow gully and implementation method

Abstract

The invention discloses a prevention and treatment system of a large spoil area in a debris flow gully and an implementation method. The prevention and treatment system comprises the spoil area (1), a check dam (2), a silt stopping plant (3), a drainage trough (4) and a blocking dam (6); the check dam (2) is located on the upstream of the debris flow gully, the silt stopping plant (3) is located between the check dam (2) and the blocking dam (6) transversely arranged on the downstream, the drainage trough (4) is located on one side of the spoil area (1) and is arranged along the edge of the spoil area (1), and an inlet of the drainage trough (4) is located on the upstream of the top of the spoil area (1). The shortcoming that a prevention and treatment structure often losses efficiency due to single controlling measures in the prior art is overcome, huge excavation and support construction is not needed, and the beneficial effects of reducing project waste slag and the land acquisition area of the spoil area and saving the land resources are achieved.

Description

technical field [0001] The invention relates to the technical field of mud-rock flow ditch prevention and control engineering, and more specifically relates to a prevention and control system and an implementation method for a large-scale spoil ground in a mud-rock flow ditch. Background technique [0002] For the construction of hydropower projects in the deep mountains and valleys of Southwest my country, the location of the spoil ground is limited by the terrain and geological conditions, and it is usually selected in a large gully. Since this area is an area where debris flows frequently occur, and the capacity of the large spoil ground is over one million cubic meters, and the height of the spoil is as high as 100 meters, the prevention and control of debris flows in the large spoil ground is particularly important in the project construction process. The debris flow drainage project is the preferred prevention and control plan, but a single prevention and control measu...

AI Technical Summary

Problems solved by technology

In the case of narrow channel space and steep terrain on both sides, huge excavation and support construction are required to form the above-mentioned foundation surface, and the foundation surface cannot even be formed. As a result, it is difficult to complete the drainage facilities before the flood season. The slag yard cannot survive the flood season, and the investment in the drainage project is huge

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