Building method for tailings warehouse

Abstract

The invention discloses a building method for a tailings warehouse. The method comprises the steps that ore discharging is conducted along the old tailings warehouse dam outer slope, slope pressing is conducted, in the slope pressing process, embedding of a geotechnical cloth reverse filtering layer, a water collecting gallery, a drainage pipe net and a slope attaching reverse filtering drainage belt and slope pressing are synchronously finished, a slope pressing body is formed, and a new tailings warehouse is isolated from an old tailings warehouse; and when the designed flood level of the new tailings warehouse is higher than the initial dam height of the old tailings warehouse, the process comprises the following steps that firstly, slope pressing and synchronous embedding of the geotechnical cloth reverse filtering layer are conducted; secondly, slope pressing and synchronous embedding of the water collecting gallery are conducted; and thirdly, slope pressing and synchronous embedding of the drainage pipe net and the slope attaching reverse filtering drainage belt are conducted. By means of the method, warehouse-connection-to-warehouse of the new tailings warehouse and the old tailings warehouse is achieved, meanwhile, part of a dam body of an old tailings dam is submerged by warehouse water of the new tailings warehouse, the warehouse volume utilization rate is increased, mutual influences between the new tailings warehouse and the old tailings warehouse are eliminated, and safety of the new tailings warehouse and the old tailings warehouse is ensured.

Description

technical field [0001] The invention belongs to the technical field of construction of tailings ponds, and in particular relates to a construction method of tailings ponds. Background technique [0002] At present, the stacking methods of tailings dams mainly include upstream method, midline method and downstream method. More than 90% of the tailings ponds in my country adopt the upstream method of stacking tailings dams in front of the dam. With the rapid development of the economy, the upstream tailings ponds built in the early stage are basically in the middle and late stages of service, and new tailings ponds are urgently needed to store tailings. At present, the new tailings ponds at home and abroad generally adopt the method of "storage-separation" that does not connect the new tailings ponds and the old tailings ponds to avoid mutual influence between the two ponds. There are two types: 1. New tailings ponds in another area Tailings ponds, but its main problems are: ...

AI Technical Summary

Problems solved by technology

At present, the new tailings ponds at home and abroad generally adopt the method of "storage-separation" that does not connect the new tailings ponds and the old tailings ponds to avoid mutual influence between the two ponds. There are two types: 1. New tailings ponds in another area Tailings pond, but its main problems are: land resources are not fully utilized, resulting in an increase in pollution points, and the utilization rate of storage capacity has not improved

2. There is a new tailings pond in the middle safe zone in a certain area downstream of the old tailings pond, but the main problem is that the new tailings pond in the middle safe zone is reserved downstream. Although the pollution points are reduced, the waste is wasted. The safety space in the middle of the upstream and downstream tailings ponds and the upper space resources, the utilization rate of the storage capacity has not improved

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