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Construction method applied to gently-inclined ore body cemented filling strip stoping

A technology of cemented filling and construction methods, which is applied in the direction of filling, ground mining, mining equipment, etc., and can solve the problems of large roof safety and blasting risks, susceptibility to changes in ground pressure, and large roof exposure area, etc., to reduce the roof The effect of reducing the risk of falling, reducing the safety risk of the roof and shortening the recovery period

Pending Publication Date: 2021-12-21
湖北三宁矿业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of construction method that is applied to the mining of the cemented filling strip of gently inclined ore body, to solve the existing underground mining construction that proposes in the above-mentioned background in the face of gently inclined, thin ore body ore layer is generally in mining During the process, it is necessary to set up the top and bottom columns
In addition, during the recovery process, the exposed area of ​​the roof is large, which is easily affected by ground pressure changes, and there is a large risk of roof safety and blasting, and the recovery rate is low and the recovery cycle is long.

Method used

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  • Construction method applied to gently-inclined ore body cemented filling strip stoping
  • Construction method applied to gently-inclined ore body cemented filling strip stoping
  • Construction method applied to gently-inclined ore body cemented filling strip stoping

Examples

Experimental program
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Effect test

Embodiment 1

[0044] Example 1 as figure 1 and figure 2 As shown, a construction method applied to the mining of gently inclined ore body cemented filling strips includes the following steps:

[0045] Step 1: Analyze the construction safety conditions of the mining area structure, and draw up the construction plan and technological process; the safety condition analysis includes lithological stability analysis, rockburst possibility analysis and hydrogeological condition analysis, which is convenient for setting the plan, and the most important thing is to ensure that the construction process To ensure the safety of the roof, ensure the safety monitoring of the roof to ensure that there is no water leakage on the roof during the cemented filling period, and no geological water hazards occur in the area.

[0046] Step 2: Divide the mining area and determine the arrangement of roadways and strips. The strips located in the same mining area are arranged at equal intervals between the roadway...

Embodiment 2

[0054] Example 2 as image 3 As shown, the azimuth descriptions of southeast, northwest and north correspond one-to-one with the up, down, left, and right in the figure, up corresponds to north, and left corresponds to west, where:

[0055] Roadway floor elevation: +888 to +902 meters; the surface elevation of the overlying strata +1158 to +1164 meters; the minimum thickness of the overlying strata is 270 meters, the texture structure is simple, and it is a monoclinic structure, dipping north-northeast, with a dip angle of 4-7°, and partially affected by faults and cracks, the roof structure is relatively stable, and there are rockbursts locally.

[0056] 1. Roadway Excavation Section Requirements

[0057] Rectangular section, the excavation width is 6 meters, and the height is based on the thickness of the ore seam. The control height of the full-layer excavation is 3.5 meters, and the thickness of the rich ore is less than 3.5 meters. Layer excavation.

[0058] 2. Roadway ...

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Abstract

The invention discloses a construction method applied to gently-inclined ore body cemented filling strip stoping, relates to the technical field of ore body stoping, and aims to solve the problem that a stoping method is poor after gently-inclined non-metal ore body cemented filling. The stoping method comprises the steps that after cemented filling is finished, a plurality of strips distributed at equal intervals are equally divided into a plurality of strip groups, each strip group comprises at least one strip unit, each strip unit comprises two adjacent strips, the strip units of the same strip group are constructed at the same time, the strips of the same strip unit are opened in the opposite directions, then opposite tunneling is conducted from the openings to the middle positions of the strips, tunneling is stopped after the strips are tunneled to the middle positions of the strips, and opening is performed in the opposite opening direction and tunneling is performed in the opposite tunneling direction until the strips are through, so that the stoping efficiency is improved, the consumption of mechanical shoveling and loading is saved due to two-way alternate construction, meanwhile, the exposed area of a top plate in the stoping process is reduced, the safety risk of the top plate is reduced, and the safety risk of blasting is avoided.

Description

technical field [0001] The invention relates to a construction method of mining, in particular to a construction method applied to the mining of gently inclined ore body cemented filling strips, and belongs to the technical field of ore body mining. Background technique [0002] The filling mining method refers to the mining method of filling the goaf with filling materials while carrying out ore dropping, transportation and other operations. The purpose of filling is to support the two sides of rocks in the goaf, and to create a foothold for the continuation of the layered mining above. It is suitable for deposits where the ore and surrounding rock are not stable and large exposure is not allowed; deposits whose surface needs to be protected; rare precious metals or high-grade deposits; spontaneous combustion sulfide deposits; deposits with complex occurrence conditions, etc. The problems existing in the existing mining construction process are: [0003] Underground minin...

Claims

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Application Information

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IPC IPC(8): E21C41/22E21F15/08
CPCE21C41/22E21F15/08
Inventor 李勇王学梁王德华郑明华
Owner 湖北三宁矿业有限公司
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