Safe and efficient shallow hole house column mining method

A mining method and high-efficiency technology, applied in mining equipment, ground mining, mining equipment, etc., can solve problems such as cracking of the roof side of the stope, long mining time, and large damage to rock joints and fissures, and achieve the effect of reducing blasting times

CN111749695AActive Publication Date: 2020-10-09YUXI DAHONGSHAN MINING
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2020-10-09

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Abstract

The invention discloses a safe and efficient shallow hole house column mining method. Stope arranging, stope undercutting, coping recovery, smooth blasting, support and ore discharging are included. Through one-time blasting coping and smooth blasting coping, the blasting frequency is reduced, the recovery efficiency is improved, and stope top plate surrounding rock stability can be better controlled. According to the method, the stope pumice stone treatment workload is small, stope top plate surrounding rock joint fracture damage is little, and blasting disturbance on the top plate side fromstope multi-time blasting is avoided; and smooth blasting and anchor rod support are adopted in a stope top plate, and safety of the ore discharging process is ensured.
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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...

Examples

Embodiment 1

[0038] Such as figure 1 , this embodiment implements mining for the ore body with stable ore rocks and a gently inclined lower ore body with a thickness of less than 8-10m, including the following steps:

[0039] 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 3, 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 face to the stope. Firstly, the bottom of the stope is completely ...