Block-shaped cutting, jacking and pushing ore removal mining method of double-layer extreme-thin jade mine

Abstract

The invention provides a block-shaped cutting, jacking and pushing ore removal mining method of double-layer extreme-thin jade ore. The method includes the steps that firstly, an ore body is divided into ore blocks according to the trend of the ore body, the ore blocks are subjected to mining-cutting for forming a back production space, and a chain saw arm is utilized for conducting transverse and vertical cutting on the upper-layer ore body and surrounding rock along a service tunnel, so that the ore body can be cut into small regular ore blocks and be separated from the upper surrounding rock and the lower surrounding rock; an air pressure jacking and pushing bag is placed in a cutting seam in the upper portion of the ore body for downward squeezing the ore body, the root of the ore body is broken for achieving ore rock separation, and the separated upper-layer ore body is taken down and transported out through a flat car; then, the chain saw arm is utilized for cutting the surrounding rock along a top plate, the jacking and pushing bag is placed in a space formed after the cutting seam and the produced ore body, and the surrounding rock is squeezed and crushed and carried to a goaf for filling the goaf; after the upper surrounding rock is cleaned, the lower-layer ore body is mined through the same cutting squeezing and filling processes. According to the block-shaped cutting, jacking and pushing ore removal mining method, pure mechanical work is adopted, operation is simple, labor intensity is small, economic benefits are high, safe operation of a mining field can be guaranteed, and the ground environment can be protected.

Description

technical field [0001] The invention relates to an underground mining method, in particular to a mining method for double-layer ultra-thin jade ore block cutting and push-out mining, which is suitable for underground mining of double-layer ultra-thin ore bodies. Background technique [0002] The ore body of the Zipao jade belt stone deposit in Jiangkou County, Guizhou Province, my country is flat, the ore body is thin and double-layered, and the surrounding rock is extremely unstable. There is no safe and efficient mining method for the double-layer jade ore body with such occurrence conditions. Due to the high technological value of this kind of jade mine, the mined ore must have a high degree of integrity before it can be used as an artistic processing material. The problem faced by the blasting method used in traditional underground mining is that the stress wave is easy to cause damage to the inside of the ore, making the ore technological value. The shape of the mined ...

AI Technical Summary

Problems solved by technology

Due to the high technological value of this kind of jade mine, the mined ore must have a high degree of integrity before it can be used as an artistic processing material. The problem faced by the blasting method used in traditional underground mining is that the stress wave is easy to cause damage to the inside of the ore, making the ore technological value. The shape of the mined ore is irregular and processing is difficult; the recovery efficiency is low, and manual mining is often required, and the labor intensity is high. The roof is prone to collapse due to the concentrated stress generated by blasting, which poses a threat to personnel and equipment; There is also the problem of difficult hole layout

Traditional manual prying has low production efficiency and low safety

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