摘要
贵州威宁县猴场镇腰岩脚崩塌发生于2006年1月27日。论文基于研究区工程地质环境条件分析和灾害发生过程的相关分析,建立了崩塌灾害发生的概念模型,即高陡边坡上部灰岩中近坡面发育平行陡崖面的深切溶蚀裂缝,坡体深部近水平煤层向坡面过度回采,导致溶蚀裂缝下端及外侧岩石中应力集中增加而发展为破坏。基于MIDAS/GTS分析软件量化分析了崩塌发生机理及过程,并进一步分析了不同采空率下回采工作面距离陡崖面的临界安全距离,可为类似条件下煤矿开采提供参考依据。
Yaoyanjiao collapse happened in January 27,2006 in Weining county,Guizhou province. Base on engineering geological environmental conditions and collapse disaster process,the conceptual model of formation mechanism is established. There is a deep corrosion crack near and parallel to slope surface of the high and steep slope in the upper limestone,and excessively stopping of nearly horizontal seam in the slope led to further stress concentration in the bottom of corrosion cracks and outer rock,thus led to collapse disaster. Base on MIDAS / GTS analysis software,collapse formation mechanism and process are analyzed,and thus gets the critical safe distance,horizontal distance between stope face and steep cliff surface. This research result can be used for similar slope.
出处
《中国地质灾害与防治学报》
CSCD
2013年第3期8-12,共5页
The Chinese Journal of Geological Hazard and Control
关键词
腰岩脚崩塌
上硬下软型边坡
形成机理
回采率
临界安全距离
Yaoyanjiao collapse
the slope of up hardness and down softness
formation mechanism
recovery ratio
critical safe distance
