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Thin coal seam roadway side face construction stoping method

A thin coal seam and roadway technology, which is applied in ground mining, earthwork drilling, underground mining, etc., can solve the problems that the fully mechanized mining face area and corner coal cannot be arranged, mining cannot be carried out, and resources are idle, so as to improve working conditions and labor environment, a high degree of automation, and the effect of simplifying the mining process

Pending Publication Date: 2021-05-04
陕西涌鑫矿业有限责任公司
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a mining method for the side construction of a thin coal seam roadway, which solves the problem that using the existing method, the area where the fully mechanized mining face cannot be arranged and the corner coal cannot be recovered, resulting in a large amount of idle and waste of resources.

Method used

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  • Thin coal seam roadway side face construction stoping method

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Embodiment

[0042] Economic Benefit Analysis

[0043] Coal recovery benefits: the drilling speed v of the auger shearer is controlled at 1.5m / min, and the drill bit is 525mm. The recoverable coal volume per hour of the drilling rig is Q=60vπR2rK; Q is the coal recoverable volume per hour; v is the drilling speed of the coal machine controlled at 1.5m / min; R is the radius of the drill bit 0.525 / 2m; r is the bulk density of coal is 1.35 t / m3; K is the influence variable of the coal machine, the drill bit is extended and the coal machine is replaced, and the value here is 0.9; calculated according to the recovery process Q=60*1.5*3.14*(0.525 / 2)2*1.35*0.9; after The 8 o'clock shift and the 4 o'clock shift for two-hour maintenance will produce 14 hours a day. Each shearer can produce 336 tons per day. Two shearers arranged in two lanes can produce 672 tons in a round shift, and coal can be mined every month. The volume is 20,160 tons. According to the current coal price of 246 yuan / ton, the c...

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Abstract

The invention discloses a thin coal seam roadway side face construction stoping method. The method is specifically implemented according to the following steps that firstly, a coal mining machine motion mathematical model is established for simulation; secondly, according to a simulation result in the first step, in combination with the control principle of a thin coal seam mining roadway, blocks are planned, and roadway arrangement is conducted; and thirdly, a coal mining machine is arranged in the roadway, a transportation groove is formed in a position opposite to the coal mining machine, and stoped coal is transported out through the transportation groove. According to the method, the problem that a large amount of resources are idle and wasted due to the fact that an existing method cannot be used for stoping areas where fully mechanized coal mining faces cannot be arranged and leftover coal is solved.

Description

technical field [0001] The invention belongs to the technical field of coal mine recovery, and in particular relates to a recovery method for side construction of a thin coal seam roadway. Background technique [0002] Thin coal seam resources are rich in reserves and coal quality is good, but due to the unstable occurrence of thin coal seams, the geological structure in the area is complex, and a large number of fault structures are distributed in the area, and a large number of coal seams are divided into discontinuous blocks of different sizes by faults Coal seam, in the mining process of thin coal seam working face, due to the large amount of gangue, it is a great challenge to use thin coal seam shearer and transporter in the limited coal passing space, so it is impossible to arrange fully mechanized mining face due to the influence of faults and weathering The area and corner coal cannot be recovered, resulting in a large amount of idle and waste of resources. If tradit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C41/18E21C27/22E21C35/20
CPCE21C41/18E21C27/22E21C35/20
Inventor 刘辉宋宇晨郭强杜超杰
Owner 陕西涌鑫矿业有限责任公司
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