Method for jointly treating open pit through waste rocks and dry tailings

An open pit and dry tail technology, applied in safety devices, mining devices, earthwork drilling and other directions, can solve problems such as secondary disasters on open slopes, and achieve the effects of optimizing resources, reducing environmental damage and avoiding safety accidents.

Pending Publication Date: 2022-04-08
WANBAO MINING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: how to provide a method for joint disposal of waste rock and dry tailings in open pits to solve the problem of secondary disasters induced by open slopes

Method used

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  • Method for jointly treating open pit through waste rocks and dry tailings
  • Method for jointly treating open pit through waste rocks and dry tailings
  • Method for jointly treating open pit through waste rocks and dry tailings

Examples

Experimental program
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Embodiment 1

[0056] Taking the deep concave open pit as an example, the elevation of the closed circle on the surface is set to 0m. In the first phase of the disposal project, the bottom and slope of the open pit are cleaned first, and the hydraulic channels connecting the open pit and groundwater are blocked to prevent the backfill from polluting the underground and the water in the surrounding surrounding rocks.

[0057] Such as figure 1As shown, the waste rock 2 is discharged to the bottom of the open pit by a car or a belt conveyor, and a 5-8m thick waste rock layer is formed after being rolled by a road roller. Then, the dry tailings 3 after pressure filtration and dehydration are transported to the waste rock layer at the bottom by a belt conveyor and compacted to form a dry tailings layer, and the thickness of the dry tailings layer is controlled below 5m. Among them, the dry tailings 3 used for backfilling the open pit in the first phase of the disposal project is formed by dense ...

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Abstract

The invention relates to a method for jointly treating an open pit through waste rocks and dry tailings, and belongs to the field of mine open pit backfilling treatment. The method comprises the steps that the bottom of the open pit is backfilled with a waste rock layer 2, dry tailings obtained after dehydration and filter pressing are conveyed to the waste rock layer 2 and are compacted to form a dry tailings layer 3, and the waste rock layer 2 and the dry tailings layer 3 are stacked alternately; an initial dam 4 is laid on the stacking layer of the waste rock layer 2 and the dry tailing layer 3, and dry tailing piles 3'are stacked on the upstream of the initial dam 4 in a layered mode in an inverted mode; a waste rock heap 10 is stacked on the periphery of the dry tailing heap 3'stacked in the middle layer in an inverted mode till the top face of the waste rock heap 10 is bordered with the top face of the dry tailing heap 3 '; a drainage prism 5 is laid on the periphery of the waste rock pile 10; and an inverted filter layer 6 is constructed between the waste rock heap 10 and the drainage prism body 5. The risk of landslide, debris flow and other secondary geological disasters caused by instability of the open-air side slope can be reduced, safety accidents caused by tailing leakage and dam break can be avoided, and safe stockpiling of the waste rocks and the tailings is achieved.

Description

technical field [0001] The invention belongs to the field of backfill disposal of open pits in mines, and in particular relates to a method for joint disposal of waste rocks and dry tailings in open pits. Background technique [0002] The open-pit pit formed by the open-pit mining of this mine has a great impact on the surrounding environment: on the one hand, the open-pit slope is easy to induce local slope instability under the action of external force, which in turn causes secondary geological disasters such as landslides and debris flows, which is a major issue for mine safety production. Potential safety hazards; on the other hand, in the rainy season, the catchment water in open pits is easy to seep through cracks and cause groundwater environmental pollution. If it is not treated for a long time, it will also cause problems such as surface cracks and subsidence. In recent years, the number of mines facing closed pits or open-pit to underground mines is increasing day ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F15/06E21F15/00E21F16/00E21F17/00
CPCE21F17/00E21F15/06E21F15/00E21F16/00
Inventor 李涛刘敬智沈汉周斌李路梁昌鸿宋洪勇
Owner WANBAO MINING
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