WebSep 24, 2024 · The mechanism and evolution control of pillar bursts in multithick key strata are studied using field investigation, theoretical analysis, and numerical simulation. The mechanism of dynamic and static stress-induced pillar bursts was revealed combining the “O-X” broken features for key strata and numerical simulation of pillar stress evolution. WebIntroduction. Coal burst can generally be classified into three types, i.e., the fault-induced type, the coal pillar-induced type, and the strain-induced type (Kaiser et al., 2000), in …
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WebAug 30, 2013 · INTRODUCTION. In mining environment, it is extremely important to monitor the spatial and temporal evolution of rupture processes. The determination of focal mechanisms, scalar moment, centroid location and extended source parameters can provide valuable information to detect weakened regions and evaluate risks of further … WebJun 1, 2008 · As a regional, real-time and dynamic method, microseismic monitoring technology is quite an appropriate technology for forecasting geological hazards, such … how download library genesis books
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WebWithout further development andappli&tion of burst control measures, the occurrence of burst-related problems in the United States will likely increase for several reasons. First, full-extraction mining, with both the room-and-pillar and longwall methods, continues to increase. Widespread application of remote control WebJun 1, 2008 · We have not only studied the focal mechanism caused by fractures or bursts of coal pillars by seismology and geophysics, but also provided an academic basis for … WebSep 1, 1989 · Hasegawa et al. (1989) described six possible mechanisms for mine-induced tremors based on the situation of mine earthquake activity in Canada: roof caving, coal pillar impact, tensile fracture ... photographic tint