Upper mining method of steeply inclined thin ore body

A mining method and thin ore body technology, which is applied to the upward mining field of steeply inclined thin ore bodies, can solve the problems of limited mining efficiency, low modernization, rock drilling, ore falling and low ore extraction efficiency, and achieve improved mining efficiency. Efficiency and simplification of approval engineering

Active Publication Date: 2018-06-01
NORTHWEST RES INST OF MINING & METALLURGY INST
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Problems solved by technology

However, whether it is the shallow hole ore retention method or the wall cutting and filling method, an air leg rock drill is required to drill rock, and electric rakes and funnels are used to extract ore, so that the efficiency of both rock d

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  • Upper mining method of steeply inclined thin ore body

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[0024] The mining method of the present invention will be described in detail below with reference to the drawings and specific embodiments.

[0025] A lead-zinc polymetallic mine in northwestern China is a symbiotic low-grade gold ore body with an inclination angle of 85-90° and an average thickness of 2.0-3.5m. The original mining method was cut-wall filling method, hand-held rock drills, and electric harrows. Supplemented by manual mining, the stope production capacity is only 8-12 tons / day. After adopting the mining method of the present invention, the production capacity of the stope is increased to 25-35 tons / day. Such as figure 1 As shown, the specific steps of the upward mining method for a steeply inclined thin ore body of the present invention in mining the ore are:

[0026] A. Divide the above gold mine into ore blocks along the direction of the ore body. The ore blocks are arranged in a parallelogram with an inclination angle of 15°; the ore blocks are 60m long, the w...

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Abstract

The invention discloses an upper mining method of a steeply inclined thin ore body, and belongs to the technical field of underground mine mining. The mining method comprises the steps that the steeply inclined thin ore body is divided into inclined ore blocks, and by using a driving pulse interior inclined rampway as a channel of rock drilling and ore removal of a miniature rock drilling trolleyand a miniature carry-scraper, mechanical mining of the steeply inclined thin ore body is achieved; meanwhile, a pulse interior inclined rampway is used as an ore block rock drilling channel and alsoused as an ore removal channel of the adjacent ore blocks so as to simplify preliminary mining engineering; and in addition, according to the mining method, top columns are not reserved in the ore blocks, studdings only reserved on one sides of the ore blocks can be recycled in time in the layer mining process, and mineral resources are recycled to the utmost extent. The above processes can obviously improve the mining efficiency of the steeply inclined thin ore body, and compared with an existing mining method, the stope production capacity of the mining method can be improved by three times.

Description

technical field [0001] The invention belongs to the technical field of underground mine mining, in particular to an upward mining method of steeply inclined thin ore bodies. Background technique [0002] Steeply inclined thin ore bodies usually refer to ore bodies with a dip angle greater than 50° and an ore body thickness less than 5m. Based on domestic and foreign mining experience in non-ferrous, gold, and uranium mines, at present, the mining of steeply inclined thin ore bodies mostly adopts the shallow hole ore retention method and the wall cutting filling method. Mining of ore bodies that are not easy to agglomerate with a thickness of more than 2m and an inclination angle greater than 50°; when the thickness of the ore body is 0.8-1.5m, the wall-cutting filling method is often used. However, whether it is the shallow hole ore retention method or the wall cutting and filling method, it is necessary to use an air-leg rock drill to drill rock, and to use electric rakes ...

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Application Information

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IPC IPC(8): E21C41/22
CPCE21C41/22
Inventor 张海磊赵文奇刘财林孟慧媚何良军
Owner NORTHWEST RES INST OF MINING & METALLURGY INST
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