Method for testing vertical three zone heights of stope cover rock based on high level borehole flow

A high-level drilling and high-level technology, applied in earthwork drilling, surveying, mining equipment, etc., can solve the problems of complex operation, high test cost, and limited use, and achieve the effect of simple operation, reliable results, and complex operation

Inactive Publication Date: 2015-03-11
HENAN POLYTECHNIC UNIV
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[0028] The purpose of the embodiments of the present invention is to provide a method for testing the height of the three vertical zones of the overlying rock in the stope based on the high

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  • Method for testing vertical three zone heights of stope cover rock based on high level borehole flow
  • Method for testing vertical three zone heights of stope cover rock based on high level borehole flow
  • Method for testing vertical three zone heights of stope cover rock based on high level borehole flow

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[0045] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0046] The application principle of the present invention will be further described below with reference to the drawings and specific embodiments.

[0047] Such as figure 1 As shown, the method for testing the vertical three-zone height of the overlying strata of a stope based on the flow of high-level boreholes in an embodiment of the present invention includes the following steps:

[0048] S101: Drilling at a high-position obliquely crossing the direction of the coal and rock in the direction of the goaf in the return air tunnel;

[0049] S102: As the working face advances, the borehole will gradually move from the origin...

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Abstract

The invention discloses a method for testing vertical three zone heights of a stope cover rock based on high level borehole flow. High level boreholes of which the trends are obliquely intersected are constructed from entity coal in a working face coal roadway to a side unloading area of a goaf; the heights of a caving zone and a diversion fissure zone of the stope cover rock are judged and tested by using drainage data of the high level boreholes of which the trends are obliquely intersected. The method disclosed by the invention is relatively low in test cost, simple in operation and reliable in result. By fully utilizing existing technical equipment and conditions of coal mines, the vertical three zone heights of the stope cover rock can be simply and quickly determined by using flow change of the high level boreholes.

Description

technical field [0001] The invention belongs to the technical field of calculating the height of three vertical zones of overlying rock in a mine stope, and in particular relates to a method for testing the height of three vertical zones of overlying rock in a stope based on the flow rate of a high-position oblique drilling hole. Background technique [0002] More than 90% of underground mining mines in my country have gas gushing out. Due to the influence of gas gushing out of the goaf, the gas in the upper corner of the working face exceeds the limit. In order to effectively solve the problem of gas gushing out of the goaf, most mines All goaf pressure relief gas drainage technology is adopted. In general, the range of overburden rock fissures is the enrichment area of ​​high-concentration gas in the goaf. The height of the fissure zone is the main technical index for judging whether the coal seam can be mined and determining the mining thickness. At the same time, the colla...

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Application Information

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IPC IPC(8): E21B49/00E21B47/00E21F7/00
CPCE21B49/00E21B47/00E21F7/00
Inventor 杨明高建良张学博侯三中王晓楠郭飞鹏高志扬
Owner HENAN POLYTECHNIC UNIV
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