Method for performing extraction treatment on corner gas on work faces of adjacent roadways

A technology for working face and coal mining face, which is applied in the directions of gas discharge, earth-moving drilling, safety devices, etc., can solve the problems of heavy excavation workload, high cost, damage to the drainage pipeline, etc., and achieve the effect of improving the construction progress.

Inactive Publication Date: 2016-03-16
SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD
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Problems solved by technology

[0003] In order to solve the existing problems of large excavation workload, high cost, and easy damage to the drainage pipeline in the existing corner gas c

Method used

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  • Method for performing extraction treatment on corner gas on work faces of adjacent roadways

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Example Embodiment

[0008] Such as figure 1 As shown in the figure, a method of draining gas in the upper corner of the working face in adjacent roadways. After the return air trough 1 of the coal mining face A is completed, the return air tunnel 2 of the next face B is arranged 30 meters apart in advance. Arrange the gas drainage pipeline 3 in the return air tunnel 2, arrange a gas drainage drill site 5 at intervals of about 80 meters in the return air tunnel 2, and drill 6 drainage holes in the gas drainage drill site 5 Gas in the upper corner of coal mining face A. After the coal mining face A is drained, a borehole facing the coal mining face B is drilled in the drill site to drain the gas.

[0009] A closed wall 8 is provided between the return air passage 1 and the return air passage 2, and a wind bridge 9 is erected between the roadway of the coal mining face A and the return air passage 1, and a wind bridge 9 is installed at the rear end of the return air passage 1 There is a two-way damper...

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Abstract

The invention relates to a gas treatment method, in particular to a method for performing extraction treatment on the corner gas on the work faces of adjacent roadways. The problems that according to existing treatment on corner gas on the work faces, the tunneling workload is large, cost is high, and an extraction pipeline is prone to damage are solved. After an air returning gate roadway of a coal face A is finished, a return airway of a next work face B is arranged in advance at 30-meter interval, the gas extraction pipeline is arranged in the return airway, a gas extraction drill site is arranged in the return airway every 80 meters, drilling is constructed in the gas extraction drill sites to extract the corner gas on the coal face A, and after the coal face A is extracted, holes towards the coal face B are drilled in the drill sites for gas extraction. The method has the beneficial effects that the purpose that the extraction pipeline is arranged on one roadway and the two adjacent work faces are commonly used is achieved, the project of repeated construction of the gas extraction drill sites in the two roadways is avoided, and the construction progress is greatly increased.

Description

technical field [0001] The invention relates to a gas control method, in particular to a method for draining adjacent roadways to control gas at the upper corner of a working face. Background technique [0002] At present, the coal mine fully mechanized mining face adopts the method of draining the upper corner gas to control the gas in the working face before the mining old roof is pressed. During the drilling and drainage period, the drainage pipeline is arranged in the return air trough of the working face, and in order not to affect the transportation line of the mining face during drilling, it is necessary to arrange a gas pump at an interval of about 80 meters in the return air trough. Putting the drill site, the amount of excavation work is relatively large. The gas extraction pipeline is arranged in the return air trough, if there is an accident during the return air trough transportation, it is easy to damage the equipment and facilities such as the extraction pipe...

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Application Information

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IPC IPC(8): E21F7/00
CPCE21F7/00
Inventor 宋小平李丰廷王静程元斛永国秦佼鹏
Owner SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD
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