Flood drainage method for construction period and operation period of channel type waste slag field

Abstract

The invention relates to a flood drainage method for the construction period and the operation period of a channel type waste slag field, and belongs to the field of water conservancy and hydropower engineering. Before slag stacking, a drainage blind ditch is built at the bottom of the slag field; in the slag stacking period, a temporary flood drainage channel is reserved on the slag face, close to the hillside, of one side of the slag field, the upstream flood of the slag field is intensively drained to the downstream of the slag field, after the slag face is filled with a certain height, the temporary flood drainage channel is backfilled in the non-flood period, a temporary flood drainage channel of the filled slag face is reserved, it is guaranteed that a new flood drainage channel is formed in the slag stacking body in the next flood period, and the steps are repeated till slag discarding is finished; and after slag stacking is completed, a permanent flood drainage channel is built at the top of the slag field close to the mountain. The method has the advantages that the flood drainage channel is built on the slag surface, the construction is safer, simpler and faster, and the cost is low; a flood drainage channel is built on the slag surface, disturbance to hillsides on the two sides is reduced, and water and soil loss can be reduced; and the flood drainage channel is built on the slag surface, and land acquisition for building the flood drainage channel on the hillsides on the two sides is reduced.

Description

technical field [0001] The invention relates to the field of water conservancy and hydropower engineering, in particular to a method for flood drainage in the construction period and operation period of a ditch-type spoil yard. Background technique [0002] At present, the conventional design for flood drainage of ditch-type spoil yards is to build flood drainage canals on the hillsides on both sides of the ditch or build flood drainage box culverts at the bottom of the dregs before dumping dregs. [0003] It is difficult and costly to build flood drainage channels on hillsides before slag dumping, and the construction of flood drainage channels on hillsides is greatly affected by terrain and geological conditions, such as steep hillsides on both sides, broken rocks, or tendency to be layered, etc. In the case of topographic and geological conditions, the cost of building flood drainage canals is relatively high, and it is even impossible to build flood drainage canals. In ...

AI Technical Summary

Problems solved by technology

To solve the problem of difficulty and high cost in building flood drainage channels due to the steep terrain and poor geological conditions on both sides of the mountain, and the discrepancy between the design elevation of the slag yard and the actual slag pile elevation

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