Research on Dynamical Disasters Prediction in Mine Based on the Coupling Law between EME and Stress
The damage of coal or rock dynamical catastrophes such as coal and gas outburst is tremendous, and it threatens the workers life and property safety, affects society and economic benefit of coalmines. In recent years, the dynamical catastrophes such as coal and gas outburst are increasing with the increment of the excavating strength and the depth of mine well. Firstly, according to the relationship between EMe signal and loading stress during deformation and fracture of coal or rock, the concept of the coupling between EME and stress during the deformation and fracture of rock or coal is given in this paper. Secondly, based on the laboratory experiments, theoretical analysis and numerical simulation methods, the prediction for dynamical disasters in mine in light of the coupling between EME and stress is also researched. The research results show that: the coupling method between EME and stress can correctly simulate the distribution rules of EMe signal in coal or rock stratum which can be inversely deduced the propagation of fracture. The practical results of EME have the same changing tendency as the simulated results, which also testify the feasibility of the coupling method. It is offered a kind of new research approach to electromagnetic emission monitoring technology for the purpose of the application of monitoring EME in the prediction of dynamical catastrophes phenomena. It has important meaning for perfecting the EME monitoring and detecting theory and promoting the related disciplines. Finally this paper gives a prospect for the research on the EME method for dynamical disasters prediction in the future.
dynamical disasters in mine couples between EME and stress dynamical disasters prediction electromagnetic emission (EME) numerical simulation
Xiao Hongfei He Xueqiu
Hunan Key Laboratory of Safe Mining Techniques of Coal Mines, Xiangtan 411201, China Department of c College of Energy Science and Engineering, China University of Mining and Technology, Xuzhou 221008
国际会议
The 3rd International Symposium on Modern Mining & Safety Technology Proceedings(第三届现代采矿与安全技术国际学术会议)
辽宁阜新
英文
273-278
2008-08-04（万方平台首次上网日期，不代表论文的发表时间）