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

A technology for debris flow ditches and waste dumps, which is applied in dikes, water conservancy projects, sea area projects, etc., can solve problems such as huge excavation and support construction, difficulty in completing drainage facilities, and huge investment in drainage projects, and achieves construction speed Fast, reduced land acquisition area, safe and reliable structure

Inactive Publication Date: 2017-09-01
CHANGJIANG SURVEY PLANNING DESIGN & RES
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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 can...

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

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Embodiment approach

[0050] The present invention also includes a method for implementing the prevention and control system of the large-scale spoil ground in the debris flow ditch, which is characterized in that it includes the following steps;

[0051] ①. Determine the formation area and circulation area of ​​the debris flow through on-site investigation of the quantity and distribution of loose materials in the debris flow ditch;

[0052] ②. In the debris flow formation area and circulation area determined in step ①, select a location with better geological conditions and a larger storage capacity in front of the dam as the dam site of Gufang Dam 2. The number of dam sites of Gufang Dam 2 mentioned above is Determined according to the distribution of loose matter in the ditch;

[0053] ③. Excavate the foundation of Gufang Dam 2 at the dam site determined in step ② until the anti-sliding stability requirements of the dam body 2.1 are met, and the abutment bank slope is excavated into grooves so ...

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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...

Claims

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Application Information

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IPC IPC(8): E02B3/00E02B3/10E02B5/00E02B5/02E02B7/10
CPCE02B3/00E02B3/10E02B5/00E02B5/02E02B7/10
Inventor 刘波牛运华范五一石志超王永玲李婧
Owner CHANGJIANG SURVEY PLANNING DESIGN & RES
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