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Method for increasing mine tailing storage reserve based on designed storage capacity

A technology for tailings ponds and tailings, which is applied in the fields of mining and expansion of mine tailings ponds. It can solve the problems of huge investment, large footprint of tailings ponds, and increased transportation costs of tailings mud, so as to avoid investment and land occupation. , save land resources and production costs, simple and efficient construction process

Inactive Publication Date: 2012-09-26
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the scarcity of land resources and the large area of ​​tailings ponds, the investment in new tailings ponds is huge, and the new tailings dams are usually far away from the ore production base, which greatly increases the transportation cost of tailings slurry

Method used

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  • Method for increasing mine tailing storage reserve based on designed storage capacity
  • Method for increasing mine tailing storage reserve based on designed storage capacity
  • Method for increasing mine tailing storage reserve based on designed storage capacity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A bauxite tailings pond that is about to reach the designed storage capacity has a roof area of ​​100 hectares, the original tailings dam height is 30m, and the daily discharge of tailings slurry is 15,000 m 3 , using the method provided by the invention to increase storage capacity. The specific method is as follows:

[0048] According to the plane shape and convenient construction of the original tailings pond c, the original tailings pond is divided into four tailings pond areas, and the original tailings mud e in each tailings pond area has a small surface density and cannot meet the bearing capacity Subsequent paving is required for denser consolidated tailings soils. For each tailings pond area of ​​the tailings pond, follow-up operations shall be carried out sequentially as follows:

[0049] ① Lay a layer of isolation layer j made of bamboo on the surface of the original tailings mud layer, and then use a pumping device to take out part of the original tailings...

Embodiment 2

[0059] An iron ore tailings pond that is about to reach the design capacity, the top surface area of ​​the pond is 150 hectares, the original tailings dam height is 38m, and the daily discharge of tailings slurry is 30,000m 3 , using the method provided by the invention to increase storage capacity. The specific method is as follows:

[0060] According to the plane shape of the existing tailings pond, the tailings pond is divided into three tailings pond areas. The original tailings mud e of each tailings pond area has a relatively high surface density, and the bearing capacity can meet the density of subsequent paving. Large solidified tailings soil requirements. Carry out follow-up operations for each area sequentially as follows:

[0061] ① Take out part of the original tailings slurry e directly from the tailings pond area by pumping device, and add 6% (mass percentage) of ordinary Portland cement and lime mixture as a curing agent (ordinary Portland cement and lime The...

Embodiment 3

[0071] A copper mine tailings pond that is about to reach the design capacity, the top surface area of ​​the pond is 60 hectares, the original tailings dam height is 30m, and the daily discharge of tailings mud is 9,000 m3 3 , using the method provided by the invention to increase storage capacity. The specific method is as follows:

[0072] According to the density and bearing capacity of the tailings slurry on the surface of the original tailings pond c and the plane shape of the original tailings pond c, the tailings pond is divided into three tailings pond areas, of which two tailings pond areas The surface density of the original tailings mud e is small, and its bearing capacity cannot meet the requirements of the solidified tailings soil with a higher density for subsequent paving. The strength can meet the requirements of the solidified tailings soil with higher density for subsequent paving, and follow-up operations are carried out for each tailings pond area in seque...

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Abstract

The invention discloses a method for increasing mine tailing storage reserve based on the designed storage capacity, which belongs to the field of increasing the storage capacity of a mine tailing storehouse. The method comprises the following steps: firstly, laying a layer of working face on original mine tailing slurry in a mine tailing storehouse, arranging a vertical drainage channel in the working face, and setting a horizontal drainage channel on the working face so as to discharge water in the original mine tailing slurry discharges through the vertical drainage channel and the horizontal drainage channel due to the dead weight of solidified tailing soil or tedded tailing soil subsequently stacked on the mine tailing slurry to turn the slurry into a self-supporting soil body with sufficient strength by drainage solidification; and secondly solidifying or tedding tailing slurry subsequently injected to turn the slurry into self-supporting tailing soil with sufficient strength and then stacking the tailing soil on the working face in layers till the final stacking height is achieved.

Description

technical field [0001] The invention belongs to the technical field of mining, relates to the field of capacity expansion of mine tailings storage, and specifically refers to a method for increasing the storage capacity of the tailings storage which has reached the designed storage capacity. Background technique [0002] The large amount of ore debris and powder remaining after extracting the active ingredients from the ore is called tailings. The disposal of tailings is usually to mix these tailings with a large amount of water to make a very thin tailings slurry, and then use a pump to pass through the pipeline. Transport to designated place for storage. In order to store these fluid slurries, it is usually necessary to build a dam (called a tailings dam) to prevent the slurry from leaking out and form a tailings pond. Because the fluid mud will generate a large horizontal force on the dam body, and this force increases exponentially with the increase of the dam height, s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/18E02D3/10
Inventor 于浩程寅刘苗苗杨建伟黄新
Owner BEIHANG UNIV
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