Mathews稳定图法在萨热克铜矿小矿体进路开采中的应用  

Application of Mathews Stability Diagram Approach in Upward Drift Stoping for Small Orebody in Sareke Copper Mine

作　　者：宋百树 刘超[2] 肖卫国 王双林 

机构地区：[1]金诚信矿业管理股份有限公司乌恰项目部,新疆乌恰县845450 [2]北京科技大学土木与环境工程学院,北京100083

出　　处：《矿业研究与开发》2016年第3期5-8,共4页Mining Research and Development

基　　金：国家自然科学基金项目(51374035);"十二五"国家科技支撑计划项目(2012BAB08B02)

摘　　要：采场结构参数对上向进路采矿法的采场安全起到至关重要的作用。以萨热克铜矿小矿体为研究对象,采用Mathews稳定图法与工程地质调查相结合的方法,对进路结构参数进行优化。研究表明:该矿的小矿体平均节理间距为0.90m,平均节理密度为1.12条/m;节理裂隙产状较为集中,具有明显优势方位,倾角多在20°以内,对采矿工程的稳定性较为不利;该矿体的理论稳定数N=10.94,采场极限形状系数S=3,当采矿进路长度为80 m时,进路的理论极限跨度为6.49m。最终得出结论:为确保采场稳定性,萨热克铜矿小矿体上向进路设计极限宽度取6.0m。The structure parameters play a vital role in stope safety of upward drift stoping.Taking the small orebody in Sareke Copper Mine as a research object,the structure parameters of drift were optimized by Mathews stability diagram approach and engineering geological survey.The research showed that for the small orebody,the average joint space was 0.90 mand the average joint density was 1.12 strip per meter;the joint cracks,with obvious dominant orientation,were comparatively concentrated,and most of the joint dips were less than 20°,which was not conducive to the stability of mining engineering;the theoretical stability number was 10.94,and the limiting shape factor was 3;the theoretical extreme span was 6.49 m when the drift length was 80 m.Taking all the factors into account,it concluded that the design extreme span of upward drift for small orebody was6.0min Sareke Copper Mine.

关 键 词：Mathews稳定图法 采场结构参数 工程地质调查 上向进路采矿法 优势节理 

分 类 号：TD853.3[矿业工程—金属矿开采]