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Rock burst early warning method and system in complex geological occurrence environment

A technology of rock burst and complex geology, applied in the field of geotechnical engineering, can solve problems such as increased stress concentration

Active Publication Date: 2017-01-04
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, before the rock burst occurs, although the energy in the coal has not been released, the internal stress concentration suddenly increases.

Method used

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  • Rock burst early warning method and system in complex geological occurrence environment
  • Rock burst early warning method and system in complex geological occurrence environment
  • Rock burst early warning method and system in complex geological occurrence environment

Examples

Experimental program
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Effect test

Embodiment 1

[0072] Such as figure 1 As shown, a method for early warning of rock burst in complex geological occurrence environment includes the following steps:

[0073] S1, establishing a 3D visualized numerical model of complex structural belts;

[0074] S2, according to the three-dimensional visualization numerical model, analyze the stress trigger conditions of sudden changes in the stress field of the geological structure and rock burst;

[0075] S3, analyze and judge the energy surge mechanism of rock burst according to the three-dimensional visualization numerical model;

[0076] S4, according to the analysis results in S2 and S3, based on the analysis method of rock burst precursor information based on the comprehensive discrimination of sensitive parameters such as tectonic stress and energy, the early warning of rock burst is carried out.

[0077] In step S1, the three-dimensional transient electromagnetic method of the mine is used to detect the distribution of geological s...

Embodiment 2

[0122] The following is the application of the rock burst early warning method in the complex geological occurrence environment of the present invention in Zhengli Coal Mine.

[0123] Mine overview:

[0124] Zhengli Coal Mine is affiliated to Shanxi Coking Coal Group Co., Ltd. The mine is located in Gepu Village, Lan County, Luliang City, Shanxi Province. The minefield is about 5.0km long from north to south, 3.2km wide from east to west, and covers an area of ​​9.26km 2 . Working face layout and roadway support: The current mining area of ​​Zhengli Mine is a mining area, with a strike length of 4.13km, a slope width of 1.74km, and an area of ​​about 7.18km 2 . The main mining face in the first mining area is 14 - 1 101, 14 -1 103 and 14 -1 107 working faces, of which 14 -1 Working face 103 is being recovered, 14- 1 The 107 working face is undergoing excavation of two mining roadways. The mine pressure monitoring stations used in this paper are respectively arranged i...

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Abstract

The invention relates to a rock burst early warning method in a complex geological occurrence environment. The rock burst early warning method in the complex geological occurrence environment comprises the following steps that S1, a three-dimensional visualization numerical model of a complex tectonic belt is built; S2, the stress triggering conditions of geological tectonic stress field sudden changes and rock burst are analyzed according to the three-dimensional visualization numerical model; S3, the power surge mechanism of occurrence of rock burst is researched and judged according to the three-dimensional visualization numerical model; and S4, according to the analysis results in the steps S2 and S3, a rock burst foreboding information analysis method comprehensively judged based on a sensitive parameter is formed, and early warning of rock burst is carried out. The rock burst early warning method in the complex geological occurrence environment can provide a theoretical basis for remote on-line monitoring, intelligent judgment and real-time early warning of rock burst.

Description

technical field [0001] The present invention relates to the field of geotechnical engineering, in particular, to a method and system for early warning of rock burst in complex geological occurrence environments, and in particular, to a method and system for rock burst warning based on sensitive parameter identification in complex geological occurrence environments. pressure warning method. Background technique [0002] my country is rich in coal resources, but for a long time, my country's extensive coal industry development model and large-scale mining activities have caused my country's coal mining to extend downward at a rate of 8-12 meters per year (10-20m in some areas). Accidents such as rock burst, gas outburst, water damage, and heat damage occurred frequently, causing a large number of casualties and serious damage to the ecological environment. Therefore, research on the safe mining and efficient and clean utilization of coal resources, the upgrading and transforma...

Claims

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Application Information

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IPC IPC(8): E21F17/18
CPCE21F17/18
Inventor 王宏伟姜耀东邓代新林志男张登强
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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