机译:上部保护层开采有效卸压保护范围的力学分析
School of Mines, Key Laboratory of Deep Coal Resource, Ministry of Education, China University of Mining&Technology, Xuzhou 221116, China;
State Key Laboratory for Geomechanics&Deep Underground Engineering, China University of Mining&Technology, Xuzhou 221116, China;
School of Mines, Key Laboratory of Deep Coal Resource, Ministry of Education, China University of Mining&Technology, Xuzhou 221116, China;
School of Mines, Key Laboratory of Deep Coal Resource, Ministry of Education, China University of Mining&Technology, Xuzhou 221116, China;