基于有限变形理论的大采高综放煤壁塑性区宽度研究  

Study on Width of Plastic Zone in Fully-mechanized Caving Mining with Large Height Based on Finite Deformation Theory

作　　者：殷帅峰[1] 程根银[1] 谢福星[2] 赵勇强[2] 

机构地区：[1]华北科技学院安全工程学院,北京101601 [2]中国矿业大学(北京)资源与安全工程学院,北京100083

出　　处：《煤炭技术》2016年第6期19-21,共3页Coal Technology

基　　金：国家自然科学基金项目(51574243);国家自然科学基金项目(U1361130);中央高校基本科研业务费资助(3142015086;3142015003)

摘　　要：针对大采高综放面煤壁片帮控制难题,结合顶板岩梁弹塑性有限变形认识基础,综合现场调研、相似模拟、力学推导及算例分析等方法,得出顶板弹塑性有限变形约束条件下煤体垂直应力表达式,并采用直接配点法对煤壁前方塑性区宽度进行描绘。Rib spalling in top-coal caving face with large mining height is a serious problem. Based on understanding of finite deformation theory,the method of site investigation,similarity simulation,mechanical derivation, and example analysis were used,the vertical stress under the given deformation constraints of elastic-plastic cantilever beam in front of the rib was obtained,and then the width of plastic zone was draw by the direct collocation method.

关 键 词：有限变形 变分法 直接配点法 

分 类 号：TD823[矿业工程—煤矿开采]