基于3DEC的采空区顶板垮落形成摩擦面位置分析  

Analysis of friction surface position of roof caving in gob based on 3DEC

作　　者：裴云鑫 秦广鹏[2] 刘建 张中腾 王超 Pei Yunxin;Qin Guangpeng;Liu Jian;Zhang Zhongteng;Wang Chao(College of Mining and Safety Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China;Department of Resource and Civi! Engineering, Shandong University of Science and Technology, Taian, Shandong 271019, China;Liangzhuang Mining Company, Shandong Energy Xinkuang Group, Taian, Shandong 271028, China)

机构地区：[1]山东科技大学矿业与安全工程学院,山东省青岛市266590 [2]山东科技大学资源与土木工程系,山东省泰安市271019 [3]山东能源新矿集团良庄矿业公司,山东省泰安市271028

出　　处：《中国煤炭》2018年第4期57-61,86,共6页China Coal

基　　金：国家自然科学基金(51504145);山东省高等学校科技计划(J17KB041);山东省重点研发计划(2017GGX20125)

摘　　要：基于夏阔坦煤矿1007工作面生产实际,运用矿山压力理论,采用3DEC数值模拟软件,研究了因顶板失稳摩擦引燃采空区瓦斯的危险区域。结果表明,当采空区内顶板岩层发生"O-X"破断后,体积较小的弧三角岩块具有较高发生滑落失稳的可能性,弧三角岩块易沿倾斜破断迹线发生滑落失稳摩擦。从顶板运动控制层面防治岩层破断失稳引燃采空区瓦斯事故,应重点对工作面端部弧三角区域岩层进行处理,使其及时垮落,减小垮落步距。Based on the actual production of 1007 work face at Xiakuotan Mine, conducting mining pressure theory and 3DEC numerical simulation software, it was studied that the dangerous area of gas in the gob caused by the instability of roof friction. The study results showed that when the ＂O-X＂ failure pattern occurred in the roof rock of gob. The smaller arc triangular blocks had high possibility of sliding instability, and the arc triangular rock blocks were prone to occur sliding and unstable friction along the dip break line. In order to prevent and control the accident of rock strata failure causing gas accident in gob from the aspect of roof movement control, it was necessary to deal with the rock strata in the arc triangular area at two ends of work face to promote the timely collapse and reduce the collapse step distance.

关 键 词：滑落失稳 岩块摩擦 弧三角岩块 数值模拟 

分 类 号：TD313[矿业工程—矿井建设]