Method for determining reasonable stopping line position based on stress field and vibration wave field

A technology of shock wave and stop production line, which is applied in the field of determining the position of reasonable stop production line in deep working face based on stress field and shock wave field, can solve the problems that the position of stop production line in deep working face cannot be effectively and reasonably determined, and achieve The effect of reliable evaluation grading results, detailed evaluation results, and strong operability

Pending Publication Date: 2021-02-19
XIAN UNIV OF SCI & TECH
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  • Summary
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the deficiencies in the prior art, the present invention provides a method for determining the location of a reasonable shutdown line based on the stress field and the shock wave field, which solves the problem that the location of the shutdown line in deep working faces cannot be effectively and reasonably determined at present

Method used

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  • Method for determining reasonable stopping line position based on stress field and vibration wave field
  • Method for determining reasonable stopping line position based on stress field and vibration wave field
  • Method for determining reasonable stopping line position based on stress field and vibration wave field

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Embodiment 1

[0044] Such as figure 1 As shown in , a method for determining the location of a reasonable shutdown line based on the stress field and the shock wave field includes the following steps:

[0045] Step 1, collect the relevant geological information of the working face to determine the reasonable stop production line position;

[0046] Relevant geological information includes: basic physical and mechanical properties of coal strata, mine mining and working face layout data. Ratio, internal friction angle of coal-rock layer, tensile strength of coal-rock layer, breaking expansion coefficient of overlying rock, body force of overlying rock and uniaxial compressive strength of overlying rock;

[0047] The mine mining and working face layout data include: the buried depth of the working face and the length of the working face.

[0048] Step 2, determine the first influence range of the advanced stress distribution of the working face according to the relevant geological informatio...

Embodiment 2

[0099] In the 3302 working face of a certain mine, the risk of rock burst near the stop line is high during the mining process. The method for determining the position of the reasonable stop line based on the "stress field-vibration wave field" in the present invention will be used to analyze the working face mining process. The position of production line in stoppage is dynamically adjusted, and the specific implementation steps are as follows:

[0100] Step 1, collect geological information related to the working face as shown in Table 3

[0101] The 3302 working face is located in the east of the third mining area in the west wing of Xingcun Coal Mine, with an average ground elevation of 55m, an average underground elevation of 1200m, and a mining depth of about 1250m. The 350m to the southwest of the working face is the goaf of the 3308 working face, the three mining areas in the northwest are three centralized uphills, and the northeast is the three development alleys in ...

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Abstract

The invention discloses a method for determining a reasonable stopping line position based on a stress field and a vibration wave field. The method comprises the steps of collecting related geologicalinformation of a working face with the reasonable stopping line position to be determined, determining a working face advance stress distribution influence range according to a pre-established working face advance support pressure distribution mechanical model, determining a working face advance stress distribution influence range according to working face coal seam stress on-line monitoring, determining a working face advance stress distribution influence range according to micro-seismic monitoring, determining a working face advance stress distribution influence range according to seismic wave CT inversion, and comprehensively comparing the advance stress distribution influence ranges of the working faces, and finally determining the advance stress distribution influence ranges of the working faces so as to determine the reasonable stope line position. According to the method, the characteristics of the working face coal seam and the overlying strata are fully considered, and analysis is more reliable and persuasive.

Description

technical field [0001] The invention relates to the technical field of rock burst prevention and control, and in particular to a method for determining the position of a reasonable shutdown line in a deep working face based on a stress field and a shock wave field. Background technique [0002] At present, the development of underground resources continues to go deep into the earth. As far as coal mining is concerned, there are more than 50 pairs of mines with a mining depth of more than 1000m across the country, and the maximum has reached 1500m. Deep mining will become the norm in the future. As the mine enters deep mining, the frequency and intensity of rock burst disasters increase significantly, making it difficult to effectively predict and prevent them. [0003] Statistics show that in recent years, there have been many rock burst accidents in the vicinity of the stop production line at the end of mining in the deep working face or in the mining (panel) area and in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V11/00
CPCG01V11/00
Inventor 朱广安薛俊华刘海洋蒋启鹏董国伟郭卫彬
Owner XIAN UNIV OF SCI & TECH
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