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Mining working face main fracture orientation analysis and prediction method based on micro-seismic monitoring

A technology of microseismic monitoring and prediction method, applied in seismic signal processing, instrumentation, calculation and other directions, can solve the problem that there is no effective method in the mining face, and achieve the goal of improving the accuracy, improving the accuracy and clear physical meaning. Effect

Active Publication Date: 2022-07-22
CHINA UNIV OF MINING & TECH
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Problems solved by technology

However, there is still no effective method for how to deeply analyze the location of the earthquake source and the occurrence information of the fracture surface, and then predict the development orientation of the fracture in the mining face.

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  • Mining working face main fracture orientation analysis and prediction method based on micro-seismic monitoring
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  • Mining working face main fracture orientation analysis and prediction method based on micro-seismic monitoring

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Embodiment Construction

[0053] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0054] In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0055] The invention provides a method for analyzing and predicting the orientation of main cracks in an excavation face based on microseismic monitoring, such as Figure 1-13 shown.

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Abstract

The invention discloses an excavation working face main fracture orientation analysis and prediction method based on micro-seismic monitoring. The method comprises the following steps: collecting micro-seismic data generated by coal and rock mass fracture; hierarchical clustering is carried out on the microseismic data to obtain a target seismic source group, and the target seismic source group comprises a plurality of types of seismic sources; obtaining seismic source mechanism solutions of all seismic sources in the target seismic source group, and obtaining a seismic source azimuth angle and a seismic source inclination angle based on the seismic source mechanism solutions; and positioning a seismic source, performing hierarchical clustering on the seismic source azimuth angle and the seismic source inclination angle, and predicting the main fracture orientation of the mining working face. According to the method, the development condition of the main fracture in the extraction process of the mining working face can be quantitatively analyzed, and the rock burst danger can be accurately predicted.

Description

technical field [0001] The invention relates to the technical field of coal mining and coal mine safety, in particular to a method for analyzing and predicting the orientation of main cracks in a mining face based on microseismic monitoring. Background technique [0002] Rockburst is a dynamic phenomenon of sudden and violent destruction of coal (rock) mass around coal mining space due to the instantaneous release of elastic deformation energy, often accompanied by instantaneous displacement, throwing, loud noise and air wave of coal (rock) mass. Wait. During the mining process, the shock wave disturbance around the mining face will cause the development and expansion of the internal fractures of the coal and rock mass, resulting in the damage and deterioration of the coal and rock mass and the reduction of the overall strength. The structure, etc., will lead to the further initiation, expansion and convergence of fractures under the disturbance of mining. When multiple fra...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/28G01V1/30G06K9/62
CPCG01V1/288G01V1/30G06F18/23G01V2210/646G01V2210/642G01V2210/123G01V2210/72
Inventor 刘耀琪曹安业白贤栖周坤友田鑫元白金正阚吉亮杨旭王常彬薛成春郭文豪
Owner CHINA UNIV OF MINING & TECH
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