摘要
通过对露天转地下急倾斜矿体不同开采时序关系的数值模拟分析,得出从下至上顺序开采产生的位移量和破坏范围明显小于从上到下顺序开采,其中地表最大沉降与位移减小了20%以上。深部坡外区矿体开采产生的岩体移动方向与露天边坡滑移方向相反,减小了露天边坡滑移量,增大了山体滑坡的概率。因此,加强了矿山开采分区方案的优化设计。
According to the numerical simulation analysis of different mining sequence relationship of steeply inclined orebody from surface to underground,it is concluded that the destruction and displacement from bottom to top extraction are much smaller than the opposite mining sequence,the maximum ground settlement and displacement reduces more than 20%.The moving direction of deep orebody mining of rock mass slope outside the area is contrary to the slope sliding,which reduces the slope slip,increases the probability of landslides.Once causing a landslide,it is easy to block natural water channel and induce the secondary disasters; therefore,it is necessary to strengthen the mining partition optimization design.
出处
《煤矿安全》
CAS
北大核心
2015年第2期190-192,196,共4页
Safety in Coal Mines
基金
国家自然科学基金资助项目(41172250)
"十二五"国家科技支撑计划资助项目(2012BAK09B06)
北京市创新团队提升计划资助项目(IDHT20140501)
北京市科研基地建设-科研创新平台资助项目
北京市科技成果转化基金资助项目
关键词
急倾斜
开采时序
岩体变形
边坡稳定
优化设计
steeply inclined orebody
mining sequence
rock mass deformation
slope stability
