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

A coal mining method and corner coal technology, applied in mining equipment, ground mining, mining equipment, etc., can solve the problems of incomplete negative pressure ventilation and low output in mining tunnels, and achieve ventilation management and safety, and ventilation systems Reliable, flexible layout length results

Active Publication Date: 2022-01-18
TAIYUAN DESIGN RES INST FOR COAL IND
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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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  • Coal mining method of full-negative-pressure continuous mining machine for leftover coal

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[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail in combination with the embodiments and accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. The technical solutions of the present invention will be described in detail below in conjunction with the embodiments and accompanying drawings, but the scope of protection is not limited thereto.

[0031] Such as figure 1 , figure 2 As shown, the present embodiment provides a coal mining method with a full negative pressure continuous miner for edge coal, comprising the following steps:

[0032] The first step is to arrange the roadway along the tunnel. Firstly, a transportation tunnel 3 and a return tunnel 4 are arranged on the stable side of the underground corner c...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C41/18E21F1/00E21F1/10E21F17/103
CPCE21C41/18E21F1/006E21F1/10E21F17/103
Inventor 杨泽进代金华乔青山
Owner TAIYUAN DESIGN RES INST FOR COAL IND
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