综放开采工作面基本顶侧向破断位置机理分析  

Mechanism Analysis of Basic Top Lateral Breaking Position in Fully Mechanized Top Coal Caving Mining Face

作　　者：王世潭[1] 仲涛[1,2] 曾斌 杨志平 刘铮 WANG Shitan;ZHONG Tao;ZENG Bin;YANG Zhiping;LIU Zheng(School of Resource Engineering, Longyan University, Longyan 364012, China;Jining Minxue Information Technology Co., Ltd., Zoucheng 273500, China)

机构地区：[1]龙岩学院资源工程学院,福建龙岩364012 [2]济宁敏学信息科技有限公司,山东邹城273500

出　　处：《煤矿安全》2017年第12期195-198,共4页Safety in Coal Mines

基　　金：龙岩学院博士科研启动基金资助项目(LB2015006)

摘　　要：阐述了基本顶侧向断裂引起的支承压力"内外应力场"效应,基于弹性地基梁理论推导出了基本顶侧向破断的力学判据。以某矿N2103工作面地质条件为工程背景,研究了基本顶沿侧方向弯矩变化情况,并与现场钻孔窥视仪勘测结果进行了对比,结果表明理论计算弯矩在采空区边缘内5.6~7.4 m位置达最大值,现场勘测破坏区距离采空区边缘5.454~6.847 m,这与理论计算结果基本一致。研究结果表明该力学模型能够很好的对基本顶侧向破断位置进行判定。The effect of the external and internal stress field caused by the basic roof lateral fracture is expounded.The mechanical criterion of the basic roof lateral fracture is deduced on the basis of the elastic foundation beam theory.Taking the geological conditions of a mine N2103 working face as the project background,we research the bending moment changes of basic roof along the side direction,and compare with the results of field survey and borehole camera,the results show that the theoretical calculation of the maximum moment in the gob edge 5.6 m to 7.4 m of the site survey,failure zone range to the goaf edge of 5.454 to 6.847 m is consistent with the theoretical results.The research results show that the mechanical model can well judge the basic top and lateral fracture position.

关 键 词：基本顶 侧向破断 弹性地基梁 钻孔窥视 煤柱宽度 

分 类 号：TD327.3[矿业工程—矿井建设]