某石膏矿地下开采诱发的地表沉降分析  

Analysis of Surface Subsidence Induced by Underground Mining in a Gypsum Mine

作　　者：何伟 王星[1,2,3] 李同鹏 HE Wei;WANG Xing;LI Tongpeng(Sinosteel Maanshan General Institute of Mining Research Co.,Ltd.,Maanshan 243000,China;State Key Laboratory of Safety and Health for Metal Mine,Maanshan 243000,China;Huawei National Engineering of High Efficient Cyclic Utilization of Metal Mineral Resources Co.,Ltd.,Maanshan 243000,China)

机构地区：[1]中钢集团马鞍山矿山研究总院股份有限公司,安徽马鞍山243000 [2]金属矿山安全与健康国家重点实验室,安徽马鞍山243000 [3]华唯金属矿产资源高效循环利用国家工程研究中心有限公司,安徽马鞍山243000

出　　处：《金属矿山》2021年第6期210-215,共6页Metal Mine

摘　　要：某石膏矿采用竖井开拓、房柱法开采,开采区段内形成大面积采空区,部分采空区已发生塌陷。为科学规划井下开采和保障矿山安全生产,采用理论分析与数值模拟计算方法,得出矿山地下开采诱发的"三带"高度为179.42 m,地表沉降最大值理论计算为1.43 m,数值模拟所得地表最大位移为1.36 m,出现在10#和14#盘区所对应的地表位置。矿山1#,3#,4#和5#,10#和14#盘区所对应地面已塌陷区内实测最大塌陷深度分别为1.74,1.72,1.78和1.79 m,均大于理论计算值和数值模拟值,得出上述盘区所对应的采空区上覆岩层均已连续塌陷变形,下沉直至地表,其他采空区所对应上覆岩层尚未完全塌陷变形的结论,为矿山后续的安全生产提供了科学指导。A gypsum mine is developed by vertical shaft and mined by room-and-pillar mining method,a large area of goaf has been formed in the mining section,and some goafs have collapsed. In order to scientifically plan underground mining and ensure mine safety production,this paper combines theoretical analysis and numerical simulation to calculate that the height of "three zones" induced by underground mining in this mine is 179.42 m,and the theoretical calculation of maximum surface subsidence is 1.43 m,the numerical simulation calculation of maximum surface subsidence is 1.36 m,which appears at the corresponding surface locations of panel 10# and panel 14#. By comparing the measured data of surface collapse in the mine,the measured maximum collapse depths in the corresponding surface subsidence areas of panel 1#,panel3#,panel 4# and panel 5#,panel 10# and panel 14# are 1.74,1.72,1.78 and 1.79 m respectively,which are all larger than theoretical calculation and numerical modulus. It is concluded that the upper rock of the goaf corresponding to the above panels have been continuously collapsed and sunk to the surface,while the upper rock corresponding to other panels have not completely collapsed and deformed,which provides scientific guidance for the follow-up safety production of mines.

关 键 词：石膏矿 地下开采 地表沉降 理论分析 数值模拟 

分 类 号：TD325[矿业工程—矿井建设]