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A mining method of steeply inclined medium-thick ore body

A mining method and thick ore body technology, applied in surface mining, earth square drilling, underground mining, etc., can solve the problems of low recovery rate and mining efficiency, achieve large production capacity, obvious economic benefits, improve recovery rate and resources The effect of utilization

Active Publication Date: 2021-03-02
CENT SOUTH UNIV +1
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Problems solved by technology

The invention provides a mining method for steeply inclined medium-thick ore bodies to solve the problems of low recovery rate and mining efficiency in the traditional open field method, and aims to enrich the mining methods of medium-thick ore bodies in my country

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  • A mining method of steeply inclined medium-thick ore body
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  • A mining method of steeply inclined medium-thick ore body

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Embodiment 1

[0022] Taking a copper mine in a certain area of ​​Yunnan as an example, the ore body of this copper mine has an average inclination angle of 55 degrees, and the ore bed is medium-thick, with an average of about 20-50m. The continuity is good, the f coefficient of the ore body is large, and the stability is good. The lithology of the surrounding rock is weaker than that of the footwall of the ore body, such as Figure 1 to Figure 3 As shown, the specific steps of the mining method of the steeply inclined medium-thick ore body are as follows:

[0023] Step 1. Divide the ore block: divide the ore body into ore blocks along the ore body direction, the height of the ore block is 50m, and the width of the ore block is 50m; the ore block is divided into sections, and the height of the sections is 10-15m. According to the surrounding rock lithology of the hanging wall and footwall of the ore body, the inclined special-shaped top pillar 13 and the bottom pillar 15 are arranged to enha...

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Abstract

The invention discloses a mining method for a steeply inclined medium-thick ore body, which belongs to the technical field of underground mining, including the steps of dividing ore blocks, mining quasi-engineering, rock drilling and mining, and optimizing the bottom pillar and the support of the traditional mining method, increasing the The stress-bearing area of ​​the top plate of the upper plate is changed to a vertical upper and lower plate, which is more conducive to the transmission of stress. The optimized structure of the top column and the bottom column can greatly reduce the mining loss rate while improving the stability, and greatly improve the non-ferrous metals. Metal recovery rate and resource utilization rate, economic benefits are obvious.

Description

technical field [0001] The invention belongs to the technical field of underground mining, and in particular relates to a mining method for steeply inclined medium-thick ore bodies. Background technique [0002] In a metal mine in the western part of my country, it belongs to a steeply inclined medium-thick ore bed. The lithology of the hanging wall of the ore body is weaker than that of the foot wall of the ore body, and the stability of the surrounding rock is better. For this type of deposit, traditional mining is difficult to meet the ore production efficiency. , dilution loss rate and other aspects of mining technical conditions. When mining with the traditional open-field method, the stope dilution loss rate is high, and the mining efficiency is low. When caving mining is used, there are many natural protection areas on the surface, and the subsidence areas are severely damaged. When using the traditional filling method, subject to the filling cost and mine scale, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21C41/22
CPCE21C41/22
Inventor 雍伟勋曹平张向阳王凯牛经明林奇斌刘文连眭素刚姬琦董涛赵庆雄罗新飏邓慧娟
Owner CENT SOUTH UNIV