Analysis of stability of support and surrounding rock in mining top coa of inclined coal seam

作     者：Xin Yajun Gou Panfeng Ge Fudong 

作者机构：School of Energy Science and EngineeringHenan Polytechnic University Product DepartmentHebi Coal Co.Ltd.Henan Coal Industry and Chemical Group Co.Ltd. 

出 版 物：《International Journal of Mining Science and Technology》 (矿业科学技术学报（英文版）)

年 卷 期：2014年第24卷第1期

页      面：63-68页

核心收录：

学科分类：081901[工学-采矿工程] 0819[工学-矿业工程] 08[工学] 

基　　金：the financial support received from the National Natural Science Foundation of China (No.51174078) Ph.D.Foundation of Henan Polytechnic University (No.60207004) of China the Fostering Foundation of Henan Polytechnic University for the Excellent Ph.D.Dissertation of China (No.508063) 

主　　题：Inclined coal seamRoof movement Mechanical modelStability 

摘      要：The study analyzes the characteristics of roof movement in mining top coal of inclined coal seam,and establishes the mechanical model of support and surrounding-rock stability in inclined coal ***,this study carries out the numerical calculation and field observation of roof movement and support stability,and provides the critical control *** results show that the fracture firstly appears in middle-upper roof and extends upwards in top coal caving in inclined coal seam;regular and irregular caving zones appear in middle-upper stress concentration region,and the asymmetric caving arch is finally *** load of middle-upper working face is larger than that of the middle-lower face;dynamic load coefficient of upper support is large,and the load on the front of support is larger than that on the rear of it,which leads to poor support *** of support and surrounding-rock system depends mainly on upper-support stability.