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Coal road gas drainage method

A technology for gas drainage and coal roadway, which is applied in the directions of gas drainage, earth-moving drilling, mining fluids, etc., can solve the problems of complicated drainage methods and affect gas drainage efficiency, etc., to achieve simple drainage methods and improve drainage efficiency. Effect

Inactive Publication Date: 2020-02-21
SHANXI LUAN ENVIRONMENTAL ENERGY DEV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, gas drainage generally uses downhole drilling, and various complex pipelines and equipment are arranged in the drilling holes for drainage. Due to the complexity of pipelines and equipment involved, once a failure occurs, the gas drainage efficiency will be affected. And this kind of pumping method is more complicated

Method used

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Embodiment Construction

[0049] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0050] It should be clear that in order to illustrate the present invention more clearly, numerous technical details are described in the following specific embodiments, and those skilled in the art should understand that the present invention can also be implemented without some of the details. In addition, in order to highlight the gist of the present invention, some methods, means, parts and applications that are well known to those skilled in the art are not described in detail, but this does not affect the implementation of the present invention. The embodiments described herein are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the presen...

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Abstract

The embodiment of the invention discloses a coal road gas drainage method and relates to the technical field of coal road tunneling. The coal road gas drainage method comprises the steps that a plurality of blind holes are drilled in the head-on working surface of a coal road to be tunneled in the coal road tunneling direction; residues in the blind holes are removed, and rock breaking grout is prefabricated; the prefabricated rock breaking grout is injected into the blind holes through grouting equipment; standing is carried out for preset time, the static breaking grout is solidified and expanded, and applies pressure to hole walls, the internal stress of coal where the coal road to be tunneled is located changes under the action of the pressure, and internal cracks of the coal are enlarged; and gas overflows along the enlarged cracks to achieve gas drainage. The drainage mode is easy, equipment fault issues hardly exist in the drainage process, and thus the drainage efficiency can be improved. The coal road gas drainage method is suitable for underground tunneling engineering with gas.

Description

technical field [0001] The invention relates to the technical field of coal roadway excavation, in particular to a coal roadway gas drainage method. Background technique [0002] During coal roadway excavation, if the gas concentration in the coal rock where the coal roadway is to be excavated is too high, gas drainage must be carried out before coal roadway excavation. The efficiency of gas drainage directly restricts the speed of roadway excavation. [0003] At present, gas drainage generally uses downhole drilling, and various complex pipelines and equipment are arranged in the drilling holes for drainage. Due to the complexity of pipelines and equipment involved, once a failure occurs, the gas drainage efficiency will be affected. And this kind of extraction method is more complicated. Contents of the invention [0004] In view of this, the embodiment of the present invention provides a coal roadway gas drainage method, the drainage method is simple, and there is almo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F7/00E21B43/26E21B43/267E21F17/18
CPCE21B43/26E21B43/267E21F7/00E21F17/18
Inventor 王雁冰赵洪亮张军李良兵郭东明李广兴
Owner SHANXI LUAN ENVIRONMENTAL ENERGY DEV
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