红泥坡铜矿采场覆岩变形破坏规律试验研究  

Experimental study on deformation and failure rule of overlying strata in Hongnipo copper mine

作　　者：梁维 赵维生 LIANG Wei;ZHAO Weisheng(Institute of Mining Engineering,Guizhou Institute of Technology,Guiyang 550003,China)

机构地区：[1]贵州理工学院矿业工程学院,贵州贵阳550003

出　　处：《中国矿业》2020年第6期110-116,共7页China Mining Magazine

基　　金：贵州省科技计划项目资助(编号:贵科合LH字[2016]7107;黔科合支撑[2019]2882;黔科合基础[2018]1061;黔科合平台人才[2017]5789-12);贵州省教育厅青年科技人才成长项目资助(编号:黔教合KY字[2016]227);贵州理工学院高层次人才科研启动经费项目资助(编号:XJGC20190633)。

摘　　要：为探讨红泥坡铜矿采场上覆岩层变形破坏、岩层冒落演化规律,采用相似模拟试验开展了相关研究。研究结果显示:在空场条件下,当开采至第三分段时,采场直接顶板发生冒落,冒落高度达8~10m,上覆岩层位移0.1~0.3m,若继续开采,采空区冒落高度达29m左右,上覆岩层最大位移达到0.6m;当矿体开采第一分段时,上覆岩层应力状态变化已发展至近地表覆盖层的局部区域,开采第二分段时,地下采动作用对近地表覆盖层应力场的影响范围逐渐增大且覆盖层呈现出不均匀的变形状态,若继续开采,上覆岩层应力场将受到明显影响,研究结果对矿山生产规划及岩层控制具有理论指导意义。In order to investigate the deformation and failure of overlying strata and the evolution of rock caving in Hongnipo copper mine,similar simulation tests are used to carry out relevant studies.The results show that under open stope condition,when mining in third sublevel,stope roof caving at height of 8-10 m,the overlying strata displacement is about 0.1-0.3 m,with continue to mining the height of caving will reach about 29 mand the displacement of overlying strata will reach 0.6 m.While the first sublevel is mined,the change of overburden stress state has developed to the local area of the layer near the ground,when mining in second sublevel,the influence of the near surface layer due to underground stoping activities is increases gradually and the deformation rules of overlying strata presented a non-uniform state,the stress field near surface layer will be significantly affected if continue to excavate,the research results have theoretical significance for mine production planning and strata control.

关 键 词：采场覆岩 岩层变形 相似模拟 红泥坡铜矿 

分 类 号：TD325[矿业工程—矿井建设]