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A Safe and Efficient Shallow Hole Room and Pillar Mining Method

A mining method and high-efficiency technology, which is applied in ground mining, mining equipment, mining equipment, etc., can solve problems that affect the safety of the mining process and mining efficiency, large joints and fissures in rock formations, cracking of the roof side of the stope, etc., so as to avoid blasting Disturbance, damage is small, and the effect of reducing the number of blasting

Active Publication Date: 2022-05-20
YUXI DAHONGSHAN MINING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Underground shallow-hole room-and-pillar mining method, personnel are exposed to the goaf for a long time. After drilling and blasting each time, the pumice needs to be cleaned. The area is large. Due to the blasting vibration and the long mining time of the stope, the rock joints and fissures are greatly damaged, and the roof of the stope There are problems such as cracking of the side walls. Therefore, during the mining process, mining must be stopped to deal with the roof side walls, which seriously affects the safety and efficiency of the mining process.

Method used

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  • A Safe and Efficient Shallow Hole Room and Pillar Mining Method
  • A Safe and Efficient Shallow Hole Room and Pillar Mining Method
  • A Safe and Efficient Shallow Hole Room and Pillar Mining Method

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Embodiment 1

[0036] Such as figure 1 , this embodiment implements mining for the stable ore rock, and the gently inclined lower ore body with a thickness of less than 8 ~ 10m, including the following steps:

[0037] First, along the footwall of the ore body, the along-vein transport roadway 1 is arranged. During the construction process of the vein-along transport roadway 1, the vertical ore body direction is constructed at a distance of 30m. The construction of bottom-drawing roadway 5, along-vein transportation roadway 1 and vein-piercing ore-exiting roadway 2 in the later stope recovery process is completed, and air inlet and return passages and safety passages are formed. For ore body 6, a 25m×15m stope is arranged according to the occurrence of the ore body, and 4m of ore pillars 4 are reserved between the stopes. During the mining process, blasting mining is carried out with the bottom roadway 5 as the free-facing direction of the stope. First, the stope roof 7 is completely pulled ...

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Abstract

The invention discloses a safe and efficient shallow-hole room-and-pillar mining method, which includes stope layout, stope bottom pulling, top pressing and mining, smooth blasting, support and mining. The invention reduces the number of blasting times and improves the recovery efficiency through one-time blasting and smooth surface blasting, which is beneficial to control the stability of the surrounding rock of the stope roof; The damage is small, which avoids the blasting disturbance of the roof side by repeated blasting in the stope; the roof of the stope is supported by smooth blasting and bolt support, which ensures the safety of the mining process.

Description

technical field [0001] The invention belongs to the technical field of mining, and in particular relates to a safe and efficient shallow-hole room-and-pillar mining method. Background technique [0002] Underground shallow-hole room-and-pillar mining method, personnel are exposed to the goaf for a long time. After drilling and blasting each time, the pumice needs to be cleaned. The area is large. Due to the blasting vibration and the long mining time of the stope, the rock joints and fissures are greatly damaged, and the roof of the stope There are problems such as cracking in the side walls. Therefore, during the mining process, mining must be stopped to deal with the roof side walls, which seriously affects the safety and mining efficiency of the mining process. [0003] Therefore, it is an urgent problem to study a safe and efficient underground shallow-hole room-and-pillar mining method. Contents of the invention [0004] The purpose of the present invention is to pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21C41/22E21F17/00E21C37/00
CPCE21C41/22E21F17/00E21C37/00
Inventor 杨小平董越权徐万寿麦宗华王军赵灵君钱正乾刘晓军田宏林徐艳方
Owner YUXI DAHONGSHAN MINING
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