Research on Dynamic Disasters Prediction in Colliery during Deep Excavation by Means of EME Method
Such coal or rock dynamic disasters as coal and gas outburst during deep excavation is very dangerous. It seriously does harm to the workers life and property safety, and has effect on social and economic benefit of collieries, in recent years, the dynamic disasters such as coal and gas outburst in coal mine during deep excavation are increasing with the increment of the excavating strength and the depth of mine well. The electromagnetic emission (EME) method is a kind of non-contact prediction method which will correctly predict the coal or rock dynamic disasters during deep excavation. Based on the coupling theorem between EME signal and loading stress during deformation and fracture of coal or rock, and the experimental study, the EME prediction method for coal or rock dynamic disasters during deep excavation is researched in this paper. The results show that: on the one hand, the coupling method between EME and stress can correctly simulate the distribution rules of EME signal in deep 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 EME monitoring technology for the purpose of the application of monitoring EME in the prediction of dynamic disasters phenomena in deep coal mines. It also has important meaning for improving the EME monitoring and detecting theory and promoting the related disciplines. In the end, this paper gives a prospect for the research on the EME method for deep coal mine dynamic disasters prediction in the future.
dynamic disasters deep coal mine couples between EME and stress prediction electromagnetic emission (EME) numerical simulation
XIAO Hongfei HE Xueqiu
Hunan Key Laboratory of Safe Mining Techniques of Coal Mines,Xiangtan 411201,Hunan,China College of Energy Science and Engineering,China University of Mining and Technology,Xuzhou 221008,Ji
国际会议
The 2008 International Symposium on Safety Science and Technology(2008年安全科学技术国际会议)
北京
英文
1616-1620
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）