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Stope filling body slope reinforcing method

A technology of backfill and side help, which is applied in the fields of backfill, ground mining, mining equipment, etc., to reduce safety risks, improve tensile strength, and improve safety environment.

Inactive Publication Date: 2017-07-07
南京银茂铅锌矿业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method to improve the tensile and shear strength of the side of the filling body, increase the overall stability of the filling body, reduce the occurrence of ore dilution and blockage of the chute caused by the side of the filling body collapsing, and improve the The recovery rate of the two-step approach or the ore pillar, and the method of strengthening the side of the stope filling body to reduce the safety risk of the two-step approach and the recovery of the ore pillar

Method used

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  • Stope filling body slope reinforcing method
  • Stope filling body slope reinforcing method
  • Stope filling body slope reinforcing method

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Embodiment Construction

[0014] The construction scheme of a side reinforcement method of a stope filling body proposed by the present invention is as follows:

[0015] (1) After the mining of the underground stope is completed and the ore is cleared, install lighting equipment, clean the stope roof and side pumice, and carry out timely support operations for unstable areas to prevent roof caving in subsequent operations.

[0016] (2) After the support work is completed, the steel mesh or bamboo mesh is vertically hung along the side of the stope to make it close to the rock side, and the steel mesh or bamboo mesh is tied with lead wire, and then the Each piece of steel mesh or bamboo mesh is tied to the iron wire surrounding the stope (see figure 1 , 2 ), when the transverse span of the stope is small, the left and right steel mesh pieces or bamboo mesh pieces can be directly connected with iron wires (see image 3 ,refer to figure 2 ), when the stope filling height exceeds 2 meters, it can be er...

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Abstract

The present invention provides a method for improving the tensile and shear strength of the side of the filling body, increasing the overall stability of the filling body, reducing the occurrence of ore depletion and blockage of the chute caused by the side of the filling body collapsing, and improving the two-step progress. The method of strengthening the side of the stope filling body reduces the safety risk of the two-step approach and the recovery of the pillar. The method is to clean the stope roof and side side pumice after the stope mining is completed, and then vertically hang steel mesh or bamboo mesh along the side side of the stope so that it is close to the rock side and adjacent to each steel mesh Lead wires are used to bind the pieces or bamboo mesh pieces, and then tie each piece of steel mesh or bamboo mesh pieces to the iron wires surrounding the stope with iron wires. When the horizontal span of the stope is small, the right Two pieces of reinforced mesh or bamboo mesh are connected with iron wire; when the filling height of the stope exceeds 2 meters, it can be erected layer by layer as the filling body of the stope rises, and the erection method is the same as above.

Description

technical field [0001] The invention relates to the underground mining and filling technology of metal mines, especially the approach-type filling mining method. Background technique [0002] On some ore bodies with high ore value and grade, the recovery rate of ore can be improved by adopting the filling mining method. For a long time, domestic mines and scientific research institutions have focused on improving the strength of the filling body, and have tested various methods such as increasing the filling concentration, increasing the lime-sand ratio, adding high-water curing materials, and improving cementing materials, all of which have achieved certain results. The improvement of the compressive strength of the filling body is conducive to maintaining the stability of the surrounding rock and increasing the recovery rate of the ore pillar. However, no matter what method is used, the tensile strength and shear strength of the filling body are not significantly improved...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C41/16E21F15/04
CPCE21C41/16E21F15/04
Inventor 焦鹏曹维勤张文如刘乾勇
Owner 南京银茂铅锌矿业有限公司
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