A valley-type tailings pond flood drainage system

Abstract

The invention belongs to the technical field of tailing ponds, and in particular relates to a flood drainage system for a valley-type tailing pond. The flood drainage system comprises an initial-stage dam arranged at the downstream of the tailing pond and a flood dam arranged at the upstream of the tailing pond, wherein a backwater tank for collecting tailing pond backwater and a stilling basin are arranged at the downstream of the initial-stage dam; a main flood drainage tunnel is arranged between the initial-stage dam and the flood dam; a retaining wall is arranged in the main flood drainage tunnel and then divides the main flood drainage tunnel into a clean water side and a waste water side, the upstream of the clean water side of the main flood drainage tunnel is connected with the flood dam, the downstream of the clean water side of the main flood drainage tunnel is communicated with the stilling basin, and the waste water side is communicated with the backwater tank. The flood drainage system for the valley-type tailing pond can effectively solve a flood and sewage distribution problem of the valley type tailing pond.

Description

technical field [0001] The invention belongs to the technical field of tailings ponds, and in particular relates to a valley-type tailings pond flood discharge system. Background technique [0002] At present, there are generally two types of tailings ponds commonly used on the ground: valley type and cofferdam type, among which valley type tailings ponds account for the majority. The valley-type tailings pond is to use the naturally formed channel to build an initial dam at a suitable position in the channel. Using the initial dam as a support, the tailings are piled into the channel by hydraulic filling. Because the hydraulically filled tailings occupy most of the space in the trench, in order to ensure the safe operation of the tailings pond and solve the problem of flood drainage in the valley, the tailings pond must be equipped with a corresponding flood drainage system. However, when most of the tailings ponds are actually in operation, the flood drainage system not o...

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Problems solved by technology

A large amount of backwater from the tailings pond containing pollutants such as chemicals, heavy metals, and ultrafine particles is mixed with the long-running water or flood of the channel in the flood discharge system, and part of the backwater pool under the dam is returned to the concentrator for recycling, and part of it is recycled to the concentrator. Discharged to the downstream river, causing certain environmental pollution

[0003] With the rapid development of the national economy and the increasing emphasis on environmental protection, this extensive discharge method of tailings ponds gradually cannot meet the requirements of relevant national policies, especially the tailings ponds in the water sources of key cities and the water sources of the South-to-North Water Diversion Project. It is even more urgent to adopt an environmentally friendly tailings discharge form to completely solve the pollution problem and achieve green development

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