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Coal uncovering method in deep well under complex geological conditions of strong outburst coal seam

A technology with complex geological conditions and coal seams, applied in underground mining, surface mining, earthwork drilling and mining, etc., can solve the problems of coal seam groups such as difficulty in uncovering coal, achieve remarkable drainage effects, reduce drilling burden, and reduce the cost of deep well coal uncovering Effect

Active Publication Date: 2021-09-21
淮南煤矿勘察设计院有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The technical problem to be solved by the present invention is: how to solve the difficult problem of unraveling coal in coal seam groups under complex geological conditions of strong outburst coal seam

Method used

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  • Coal uncovering method in deep well under complex geological conditions of strong outburst coal seam
  • Coal uncovering method in deep well under complex geological conditions of strong outburst coal seam
  • Coal uncovering method in deep well under complex geological conditions of strong outburst coal seam

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Embodiment Construction

[0057] In order to facilitate those skilled in the art to understand the technical solution of the present invention, the technical solution of the present invention will be further described in conjunction with the accompanying drawings.

[0058] The terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present application, "plurality" means two or more, unless otherwise specifically defined.

[0059] This embodiment discloses a method for uncovering coal in deep wells under complex geological conditions in strong outburst coal seams, including the following steps:

[0060] participate figure 1 and figure 2 , S1.1 added geological prospecting; during the construction period of -73...

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Abstract

The invention discloses a method for uncovering coal in a deep well under complex geological conditions in strong outburst coal seams, comprising the following steps: S1.1 adding geological exploration; during the construction of the underground contact inclined roadway, constructing a plurality of geological exploration drilling holes to find out the direction of the fault , to analyze the possibility of bypassing complex coal seams and passing through fault planes; S1.2 measuring gas pressure and gas content; constructing two sets of pressure measuring holes in the underground connecting inclined roadway, using the combination of electronic automatic pressure measurement and mechanical pressure measurement , to measure the gas content of the coal seam; S1.3 Translate the underground connecting inclined roadway, adjust the roadway inclination angle; S1.4 Change the roadway construction organization, and advance through the roadway; The main substation and the underground contact inclined roadway are connected in advance to form a full negative pressure ventilation system roadway; the invention avoids repeated coal removal, reduces the safety risk of coal removal, and shortens the construction period; reduces the number of drilling holes and reduces the burden of drilling .

Description

technical field [0001] The invention relates to the technical field of uncovering coal in deep wells of underground coal seams, in particular to a method for uncovering coal in deep wells under complex geological conditions of strongly outburst coal seams. Background technique [0002] The deep air inlet shaft of a mine and the connecting inclined roadway of -730~-960m are in the affected area of ​​F47, ∠30~58°, H=15~20m to uncover the coal seam group of group B, and the coal seam group is exposed at the elevation of -830m~-915m, 8 coal Gas pressure 3.1MPa, gas content 7.6m 3 / t, 4-1 coal gas pressure 3.1MPa, gas content 9.2m 3 / t, which belongs to coal seam group exposing coal under complex geological conditions of strong outburst coal seam in deep well. [0003] From -730 to -960m, the inclined roadway is constructed at 279° and 22° downhill, and the 8 coal, 7-2 coal, 7-1 coal, 6-1 coal, 5-2 coal, 4-2 coal, 4- 1 After the coal is connected with the deep air inlet shaft;...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21C41/18
CPCE21C41/18
Inventor 陈建董瑞刚董善保程邦楷陈勇赵勇陈梅勇朱传记李涛李军舰
Owner 淮南煤矿勘察设计院有限责任公司
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