A method for combined sealing and dredging of drainage chute and drainage culvert in tailings pond

Abstract

The invention discloses a combined plugging and dredging method of a drainage chute and a drainage culvert of a tailings pond. 1) Blocking of the drainage chute: from the water inlet of the upstream drainage chute to the bottom of the drainage chute Respectively backfill block stones (3), crushed stones (4), and melon stones (5) for sealing, and install an integrated prefabricated roof cover (6) at the water inlet of the drainage chute;) Blocking of drainage culverts: From the outlet of the culvert to the upstream, set a filter body not less than 5m long and composed of block stones, crushed stones, and melon stones. Before the drainage culvert is blocked, a certain number of drainage chutes and For the PE seepage pipe seepage in the drainage culvert, a closed concrete retaining wall is arranged at the outlet of the drainage culvert. The present invention seals the drainage chute and the drainage culvert based on the principle of "blocking" and "draining". Safety hazards and risks.

Description

technical field [0001] The invention belongs to the technical field of tailings pond flood discharge system governance, and in particular relates to a method for plugging tailings pond flood discharge systems based on the principles of blocking and dredging, which can be widely applied to old tailings pond flood discharge systems and tailings to be closed soon. Safe and effective blocking of the flood drainage system of the reservoir. Background technique [0002] The flood discharge system is one of the key structures of the tailings pond and plays a very important role in the safety and stability of the tailings pond. Safety incidents in tailings ponds caused by the failure of flood drainage systems (whether in use or blocked) account for almost 50% of the total incidents. Some tailings accumulation dams are designed with a stacking height of more than 100m, and the flood discharge task is undertaken by several flood discharge systems in turn. Before the official opening ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the above-mentioned problems respectively existing in the existing rigid plugging and flexible plugging, and to provide a joint plugging and dredging method of the drainage chute and drainage culvert of the tailings pond, so as to eliminate or reduce the Potential safety hazards and environmental risks that may be caused by plugging failure due to the huge water pressure on the plugging body after plugging

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