Tailing pond drainage chute and drainage culvert combined plugging and drainage method

Abstract

The invention discloses a tailing pond drainage chute and drainage culvert combined plugging and drainage method. The tailing pond drainage chute and drainage culvert combined plugging and drainage method comprises the steps that (1), a drainage chute is plugged, specifically, rock blocks (3), gravels (4) and shelled melon stones (5) are correspondingly backfilled into the drainage chute from a water inlet of an upstream drainage chute from bottom to top for plugging, and an integrated prefabricated top cover plate (6) is arranged at the water inlet of the drainage chute; and (2), a drainage culvert is plugged, specifically, inverted filter body which is not smaller than 5 m and correspondingly composed of the rock blocks, the gravels and shelled melon stones is arranged from an outlet tothe upstream of the drainage culvert, and a certain number of PE drainage pipes used for guiding and draining water seepage in the drainage chutes and the drainage culvert are pre-buried in the drainage culvert before the drainage culvert is blocked, and a closed concrete retaining wall is arranged at the outlet of the drainage culvert. According to the tailing pond drainage chute and drainage culvert combined plugging and drainage method, the drainage chute and the drainage culvert are blocked on the basis of the blocking and dredging principle, the method is simple, high in operability, small in engineering quantity and low in engineering cost, and potential safety hazards and risks caused by blocking failure of the flood drainage system can be effectively eradicated or reduced.

Description

Technical field[0001]The invention belongs to the technical field of tailing pond flood drainage system governance, and specifically relates to a method for blocking the tailing pond flood drainage system based on the principle of blocking and dredging. It can be widely applied to the old tailing pond flood drainage system and the tailings will be closed soon. Safe and effective sealing of the reservoir flood drainage system.Background technique[0002]The flood drainage 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 accidents caused by the failure of the flood drainage system (whether used or blocked) account for almost 50% of the total accidents. Some tailings accumulation dams have a designed pile height of more than 100m, and the flood discharge task is undertaken by several phases of the flood discharge system in turn. Before the new phase 1 flood discharge system is officially put ...

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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