矿山采动垮塌机理及隐患结构探查  

Collapse mechanism in the mine area and detection of adverse geological structures

作　　者：郑开欢[1] 罗周全[1] 江宏 汪伟[1] 秦亚光[1] 孟坤[1] 文磊[1] 谢承煜 ZHENG Kaihuan;LUO Zhouquan;JIANG Hong;WANG Wei;QIN Yaguang;MENG Kun;WEN Lei;XIE Chengyu(Faculty of Resources and Safety Engieering of Central South University, Changsha, Hunan 410083, China;Faculty of Energy Engieering of Xiangtan University, Xiangtan, Hunan 411105, China)

机构地区：[1]中南大学资源与安全工程学院,湖南长沙410083 [2]湘潭大学能源工程学院,湖南湘潭430081

出　　处：《中国地质灾害与防治学报》2018年第3期70-76,100,共8页The Chinese Journal of Geological Hazard and Control

基　　金：国家"十三五"重点研发计划课题资助项目(2017YFC0602901);国家自然科学基金资助项目(51274250)

摘　　要：为了实现地下矿山采动垮塌区域边缘矿体的安全回采,首先采用数值模拟方法进行采动垮塌机理研究,确定垮塌区域大致范围,然后在垮塌区边缘矿体内部掘进巷道对隐患结构进行超前探测,进一步探明隐患结构分布情况,最后通过钻探对数值模拟和超前探测结果进行验证并注浆加固.研究表明:采空区两帮为充填体、上部为矿体时,其采动垮塌破坏机理可以概括为"两帮下部三角形平动-两帮上部圆弧形转动-顶板楔形垮塌-两侧采场条形滑移-上部采场整体下沉".通过对数值模拟、超前探测和钻孔验证的综合运用,可以实现对垮塌区域隐患结构的精确探查和控制.In order to insure mining safety of stope on the boundary of collapse area caused by mine goaf,first of all,collapse mechanism due to mining is analyzed and the approximate range of collapse area is conformed using numerical simulation method. Then a detection tunnel is excavated and advanced detection is carried out to get the location of hidden structure trouble. At last,drilling was used to verify the results of numerical simulation and advanced detection,followed by grouting the collapse area. The results show that the collapse mechanism of goaf with sides formed by backfill and roof formed by orebody can be concluded in the following order：（1）Triangle parallel slide in lower part of two sides.（2） Circular rotation in upper part of two sides.（3）Wedge-shaped collapse in roof.（4） Strip-type slide in side stopes.（5） Sinking in upside stopes. Through comprehensive usage of numerical simulation method,advanced detection and drilling verification,adverse geological structures within the collapse area can be located and strengthened precisely.

关 键 词：采空区 垮塌机理 隐患结构 滑移线 超前探测 

分 类 号：X936[环境科学与工程—安全科学]