LABORATORY SIMULATION OF MICROSEISMICITY OBSERVED AT SOUTHERN LONGWALL COLLIERY, AUSTRALIA
In underground longwall coal mining, the caving process is closely associated with rock failure induced by the abutment stress near the longwall face Knowledge of the relationship between the characteristics of the rock failure and the abutment stress should lead to improved understanding of longwall geomechames and mining hazards around the face. A study on the relationship between rock failure processes under uniaxial loading stresses was earned out in laboratory on Helidon sandstone samples. Twelve single component mini acoustic sensors and four strain gauges were placed on the surface of the samples to measure the acoustic emissions and strain changes associated with sample stressing. The laboratory results were then compared with weak seismic events observed at LW704 of Southern Colliery in order to interpret roof fracturing under periodic abutment stress. This paper presents the results from the laboratory tests and the comparison.
XUN LUO JIM BOLAND PETER HATHERLY MANABU UTAGAWA
CSIRO Exploration and Mining, Australia The University of Sydney, Australia 2National Instaitute of Advanced Industrial Science and technology, Japan
国际会议
The 7th International Symposium on Rockburst and Seismicity in Mines(2009年第七届国际岩爆与微振动性学术研讨会)
大连
英文
881-890
2009-08-21（万方平台首次上网日期，不代表论文的发表时间）