摘要
露天转地下开采的矿山必须留设一定厚度的安全矿柱,即境界顶柱,境界顶住留设的厚度对于地下矿安全开采具有重要意义。石人沟铁矿露天转地下为例,利用FLAC2D,对具有代表性的安全矿柱进行了数值模拟,模拟开挖过程中境界矿柱的变形和破坏情况,对境界矿柱稳定性分析的方法进行了验证和补充,同时也为石人沟矿露天转地下设计提供科学依据和指导。
The safety boundary pillar is very important for safe production of underground mine which is transition from open-pit to underground mine,so it has to remain.Taken the Shirengou ore mine from open-pit to underground mining as an example,the safety boundary pillar at representative sections are calculated and analyzed by FLAC2D,including deformation and failure of boundary pillar during caving.Meanwhile,the failure process of the different sections is simulated.By simulation,the safety and danger section of the boundary pillar is predicted.It also will provide scientific proof and guidence for the design of ore mine from open-pit to underground mining.
出处
《现代矿业》
CAS
2010年第12期19-22,共4页
Modern Mining
关键词
露天转地下
安全境界矿柱
数值模拟
Transition from open-pit to underground mining
Safety boundary pillar
Numerical simulation
