【摘 要】
：
Taken taifeng coal mine in Mongolia for example, discussed the stability and controllability about advance pillars which locate at the front of working face and makes simulation on pillar with the software UDEC3.1. The failure styles of advance pillars ar
【机 构】
：
Key Laboratory of Mine Disaster Prevention and Control, Shandong University of Science and Technolog
论文部分内容阅读
Taken taifeng coal mine in Mongolia for example, discussed the stability and controllability about advance pillars which locate at the front of working face and makes simulation on pillar with the software UDEC3.1. The failure styles of advance pillars are shear failure and compression failure through analyzing the stability of advance pillars.The paper concludes that can protect advance pillars from shear failure by controlling coefficient of volumetric expansion of mining field rock and supports\' working resistance and can also protect it from compression failure by advance supporting, increasing setting pressure and working resistance. Two advance pillars are influenced and the main failure form is compression failure through the numerical simulation.
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