采场覆岩变形及演化规律相似模拟研究  

Resembling simulation study on overburden deformation and evolution rule in stope

作　　者：者亚雷 侯克鹏[2] ZHE Yalei;HOU Kepeng(Yunnan Yarong Mining Technology Co.,Ltd.,Kunming Yunnan 650093,China;Engineering College of Land Resources,Kunming University of Science and Technology,Kunming Yunnan 650093,China)

机构地区：[1]云南亚融矿业科技有限公司,云南昆明650093 [2]昆明理工大学国土资源工程学院,云南昆明650093

出　　处：《化工矿物与加工》2020年第7期23-26,32,共5页Industrial Minerals & Processing

摘　　要：为确保地下矿山地表的设施安全,以某铜矿开采为研究背景,为确定开采过程中引起的上覆岩层变形、移动是否能发展到地表而导致地表构筑物发生破坏,开展了室内相似模拟试验。结果表明:当矿体开采至第二分段时,上覆岩层产生变形;开采至第三分段时,随着采空区暴露面积的逐渐增大,采场直接顶板发生冒落,高度达8~12 m,上覆岩层各测点位移为0.1~0.3 m;若继续开采第四、第五分段,将导致大规模冒顶,冒落高度达58 m,同时上覆岩层产生大变形,位移为0.2~0.6 m,这给地表构筑物和生产造成了安全威胁。In order to ensure the safety of surface facilities on underground mines,taking an operating copper mine as a reference for study,indoor resembling simulation tests are carried out to determine whether the deformation and movement of the overburden during mining can develop to the surface and lead to the destruction of the surface structures.The results show that when the second section of ore body is to be mined,the overburden will deform.As the third section of ore body is to be mined,the immediate roof in the mine will fall at a height of 8-12 m with the gradually increased exposure of mined area and the displacement of each measuring point of the overburden is 0.1-0.3 m.If the fourth and fifth sections are to be mined,a large volume of roof caving will take place at a height of 58 m.Meanwhile the large area of deformation of overburden will present with a displacement of 0.2-0.6 m,which results in risks in safety of surface buildings and structures as well as production facilities.

关 键 词：采场覆岩 相似模拟试验 变形规律 位移监测 应力监测 冒落高度 暴露面积 覆岩变形 

分 类 号：TD325[矿业工程—矿井建设]