Dynamic monitoring method and system for water disaster micro-seismic of working face

A dynamic monitoring and working face technology, applied in seismology, measuring devices, geophysical measurement, etc., can solve the problems of low accuracy and weak anti-interference of water damage and microseismic monitoring, and achieve quantitative analysis, high accuracy, and anti-interference. Disruptive effect

Active Publication Date: 2021-11-26
CHINA COAL TECH & ENG GRP CHONGQING RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a method and system for dynamic monitoring of microseismic water hazards in working faces, which solves the technical problems of low accuracy and weak anti-interference in monitoring microseismic water hazards

Method used

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  • Dynamic monitoring method and system for water disaster micro-seismic of working face

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Embodiment 1

[0039] The embodiment is basically as attached figure 1 shown, including:

[0040] The acquisition module is used for real-time acquisition of geological data and microseismic signals in the mine floor monitoring area;

[0041] A building block for performing three-dimensional geological modeling based on geological data to obtain a three-dimensional geological model of the monitoring area;

[0042] The positioning module is used to locate the microseismic signal in the monitoring area by using the natural earthquake positioning algorithm, and obtain the microseismic position of the microseismic signal in the three-dimensional geological model;

[0043] The analysis module is used to analyze the microseismic signal to obtain the damage depth of the mine floor;

[0044] The display module is used to display the microseismic position and damage depth according to the three-dimensional geological model.

[0045] In this embodiment, the acquisition module includes a stress sens...

Embodiment 2

[0053] The only difference with embodiment 1 is that in S4, the analysis module also performs quantitative analysis of the strength of the microseismic signal in the monitoring area, obtains the strength quantization value of the microseismic signal, quantitatively analyzes and evaluates the strength of the microseismic signal; the analysis module also According to the quantitative value of the intensity of the microseismic signal, the damage depth of the mine floor, and the change law of the quantity, density and energy of the microseismic signal with time, the mine floor water inrush is predicted and the probability of water inrush is obtained. Combining the quantitative value of the strength of the microseismic signal, the depth of damage to the mine floor, and the change of the number, density and energy of the microseismic signal with time, the multi-factor analysis is conducive to accurately analyzing the possibility of water inrush in the mine floor.

Embodiment 3

[0055] The only difference from Embodiment 2 is that an early warning is also performed according to the preset alarm threshold; however, the alarm threshold needs to be corrected before the early warning is performed according to the preset alarm threshold. In this embodiment, the water damage microseism is caused by the pressure and impact of groundwater on the mine floor: on the one hand, because the groundwater is in a state of continuous flow, the groundwater will have an impact on the mine floor; on the other hand, the pressure of the groundwater will also Under the influence of these two aspects, the groundwater forms a water damage micro-seismic on the mine floor.

[0056] Relevant geological exploration research results show that the groundwater in the mine floor is usually flowing, and the fine particles of the rock layer or coal seam under the mine floor will gradually melt into the groundwater. Due to the great difference in the composition of different rock layers ...

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Abstract

The invention relates to the technical field of mine monitoring and early warning, in particular to a working face water disaster micro-seismic dynamic monitoring method and system, and the system comprises an acquisition module which is used for collecting geological data and micro-seismic signals of a mine floor monitoring area in real time; a construction module which is used for constructing a three-dimensional geological model of the monitoring area according to the geological data; a positioning module which is used for positioning the micro-seismic signal in the monitoring area by adopting a natural seismic positioning algorithm to obtain a micro-seismic position of the micro-seismic signal in the three-dimensional geologic model; an analysis module which is used for analyzing the microseismic signal to obtain the damage depth of the mine bottom plate; and a display module which is used for displaying the micro-seismic position and the damage depth according to the three-dimensional geologic model. The three-dimensional geological model is constructed according to the real-time geological data, even if the spatial form and the distribution condition in the monitoring area of the mine bottom plate change along with time, the micro-seismic position and the damage depth can be accurately displayed, and the monitoring accuracy and the anti-interference performance are improved.

Description

technical field [0001] The invention relates to the technical field of mine monitoring and early warning, in particular to a method and system for dynamic monitoring of microseismic water hazards in working faces. Background technique [0002] At present, mine water damage occurs frequently, which poses a huge threat to the safe and efficient mining of coal resources. It is one of the important factors restricting the development of coal production and has gradually attracted great attention from the coal industry. However, various monitoring, early warning and evaluation technologies for floor water inrush are still in the stage of exploration and research, and there are great limitations and uncertainties at the same time. For example, the theories of water inrush coefficient, "key layer", "in-situ cracking" and "zero-position failure" still have many limitations and subjective arbitrariness. Others such as direct current method, transient electromagnetic method, high-dens...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/50
CPCG01V1/50G01V2210/66
Inventor 鲜鹏辉胡运兵段天柱李云波颜恭彬张玉东仇念广闫国才杨聘卿何昭友袁永榜翟封
Owner CHINA COAL TECH & ENG GRP CHONGQING RES INST CO LTD
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