深部开采对地表及竖井稳定性影响分析  

Analysis of the Influence of Deep Mining on the Stability of Surface and Shaft

作　　者：马宏伟 李明[1] 张丽丽 王志修 刘晓宇 MA Hongwei;LI Ming;ZHANG Lili;WANG Zhixiu;LIU Xiaoyu(School of Resources and Environmental Engineering,Shandong University of Technology,Zibo 255000,China;Zhongkuang Gold Industry Co.,Ltd.,Zhaoyuan 265400,China;BGRIMM Technology Group,Beijing 102628,China;School of Resources and Geosciences,China University of Mining and Technology,Xuzhou 221116,China)

机构地区：[1]山东理工大学资源与环境工程学院,山东淄博255000 [2]中矿金业股份有限公司,山东招远265400 [3]矿冶科技集团有限公司,北京102628 [4]中国矿业大学资源与地球科学学院,江苏徐州221116

出　　处：《金属矿山》2024年第2期239-246,共8页Metal Mine

基　　金：“十四五”国家重点研发计划项目(编号:2022YFC2904100);矿冶科技集团有限公司青年科技创新基金项目(编号:04-2341)。

摘　　要：以深井矿山阜山金矿整合矿区为工程背景,通过使用3DMine-FLAC3D数值分析及建模软件,分析了矿体位移规律和深部开采对地表的影响,建立了阜山整合矿区的三维数值计算模型。针对矿岩位移及地表变形的影响进行分析,结果表明:(1)矿体下盘处由于开挖卸荷作用而出现不同程度的底鼓现象,矿体上盘的变形特征为下沉,距离矿体越远,围岩变形越小;(2)当下方设计矿体回采、充填结束后,地表最大沉降变形、倾斜变形、曲率以及水平变形均能满足《有色金属采矿设计规范》(GB 50771—2012)相关要求;(3)主竖井井筒、207风井井筒中心线处的相对变形较小,地下矿体的回采活动未对主竖井、207风井产生影响;(4)地表沉降监测表明,地下开采引起的地表的沉降位移很小。Taking the deep mine Fushan Gold Mine as the engineering background,the 3D numerical analysis and mod-eling software 3DMine-FLAC3D was used to analyze the ore body displacement pattern and the influence of deep mining on the surface,and a 3D numerical calculation model of the integrated mine area in Fushan was established.The analysis was carried out for the effects of ore body displacement and surface deformation.The results show that:①The bottom drumming occurs at the lower plate of the ore body to different degrees due to the unloading effect of excavation,and the deformation of the upper plate of the ore body is characterized by sinking,and the further away from the ore body,the smaller the deformation of the sur-rounding rock.②After the stoping and filling of the designed ore body,the maximum settlement deformation,tilt deformation,curvature and horizontal deformation of the surface can meet the relevant requirements of the′Nonferrous Metal Mining Design Specification′(GB 50771-2012).③The relative deformation at the center line of the main shaft and the 207 air shaft is small,and the mining activities of the underground ore body have no effect on the main shaft and the 207 air shaft.④The sur-face subsidence monitoring shows that the surface subsidence displacement caused by underground mining is very small.

关 键 词：深部金矿 数值分析 地下开采 地表位移 地表建(构)筑物 竖井稳定 

分 类 号：TD325[矿业工程—矿井建设]