Fractal characterization for the mining crack evolution process of overlying strata based on microseismic monitoring technology

Liu; Chao; Xue; Junhu; Yu; Guofeng; Cheng; Xiaoyu

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Fractal characterization for the mining crack evolution process of overlying strata based on microseismic monitoring technology

机译：基于微震监测技术的覆岩开采裂缝演化过程的分形表征

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摘要

In order to study the evolution laws during the development process of the coal face overburden rock mining-induced fissure,we studied the process of evolution of overburden rock mining-induced fissures and dynamically quantitatively described its fractal laws,based on the high-precision microseismic monitoring method and the nonlinear Fractal Geometry Theory.The results show that:the overburden rock mining-induced fissure fractal dimension experiences two periodic change processes with the coal face advance,namely a Small→ Big→ Small process,which tends to be stable;the functional relationship between the extraction step distance and the overburden rock mining-induced fissure fractal dimension is a cubic curve.The results suggest that the fractal dimension reflects the evolution characteristics of the overburden rock mining-induced fissure,which can be used as an evaluation index of the stability of the overburden rock strata,and it provides theoretical guidance for stability analysis of the overburden rock strata,goaf roof control and the support movements in the mining face.

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《矿业科学技术学报：英文版》 |2016年第002期|P.295-299|共5页
作者
Liu; Chao; Xue; Junhu; Yu; Guofeng; Cheng; Xiaoyu;
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作者单位

[1]College of Mineral Engineering, Xi＇an University of Science and Technology, Xi＇an 710054, China;

[2]Key Laboratory of Western Mine Exploitation and Hazard Prevention Ministry of Education, Xi＇an 710054, China;

[3]Sstate Key Laboratory of Deep Coal Mining ＆ Environment Protection, Huainan 710054, China;

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收录信息中国科学引文数据库(CSCD);
原文格式 PDF
正文语种 CHI
中图分类岩石力学性质;
关键词
岩石裂隙; 上覆地层; 演化过程; 分形特征; 监测技术; 微震; 稳定性分析; 采场覆岩;

机译：岩石裂隙;上覆地层;演化过程;分形特征;监测技术;微震;稳定性分析;采场覆岩;

Fractal characterization for the mining crack evolution process of overlying strata based on microseismic monitoring technology

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