Coal mining method of full-negative-pressure continuous mining machine for leftover coal

Abstract

The invention discloses a coal mining method of a full-negative-pressure continuous mining machine for leftover coal, and belongs to the technical field of coal mining. The problems that when a coal mining method of a continuous mining machine is adopted in leftover coal resources, full-negative-pressure ventilation cannot be achieved in a mining cave, and the yield is low are solved. The method comprises the four steps of crossheading roadway arrangement, stoping unit branch roadway arrangement, stoping unit mining and leftover coal section mining. According to the method, roadway arrangement is flexible, the resource recovery rate is high, local ventilator air supply is completely canceled during mining cave stoping, ventilation air methane air flow is prevented from returning to a stoping branch roadway, branch roadway through holes are additionally formed in a stoping unit, and ventilation management and safety are facilitated; and meanwhile, according to the coal mining method, one continuous mining machine and matched equipment are adopted for roadway tunneling and mining cave stoping, mining and tunneling are integrated, the number of newly-added personnel is small, the investment is relatively low, the coal yield is guaranteed, and good benefits can be obtained.

Description

technical field [0001] The invention belongs to the technical field of coal mining, and in particular relates to a coal mining method with a full negative pressure continuous miner for edge coal. Background technique [0002] During the mining process of the mine, due to the influence of geological conditions, mining methods, and working face layout, a large amount of corner coal resources will be left behind. Due to the small, scattered and irregular resource area, the conventional longwall fully mechanized mining method cannot be adopted. to mine. At present, in the recovery of marginal coal resources, the main mining methods are: short-wall mining, filling mining, roadway mining, continuous miner mining and the combination of these methods. Many mining methods have improved the resource recovery rate of coal mines to a certain extent, but there are still some problems, such as too many times of moving and reversing in short-wall mining, and for small-area corner coal, it...

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Problems solved by technology

[0005] The present invention overcomes the deficiencies in the prior art, and proposes a coal mining method with a full negative pressure continuous miner for edge coal resources, which solves the problem of the failure of full negative pressure ventilation in the mining tunnel when the continuous miner coal mining method is used in edge coal resources. low yield problem

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