充填法开采对主要井巷和地表构建筑物稳定性影响的数值模拟研究  

Numerical Simulation Study on the Stability of Surface Due to Backfill Mining

作　　者：汪世勇 张羿生 WANG Shiyong;ZHANG Yisheng(Gansu Tianshui Lizi Gold Mine Co.,Ltd.,Tianshui Gansu 741000,China)

机构地区：[1]甘肃省天水李子金矿有限公司,甘肃天水741000

出　　处：《佳木斯大学学报（自然科学版）》2024年第6期113-116,共4页Journal of Jiamusi University：Natural Science Edition

摘　　要：地下采矿活动导致的地面沉降直接威胁到矿区的安全运行。依托于实际矿山,探究地下开采过程中对井巷工程及地表构筑物稳定性的影响。通过实验室测试与Hoek-Brown岩石强度标准来确定岩石的力学性质,并构建了一个三维数值模型,使用FLAC 3D软件对地下开采引起的地面形变进行了模拟分析,计算出了最大地面沉降位移、倾斜率、曲率和水平形变等关键参数。研究发现,这些参数的数值都低于标准规定的安全值,表明地面结构比较稳定和安全。Subterranean mining activities pose a direct threat to the safe operation of mining areas due to ground subsidence.Based on an actual mine and investigates the impact of underground mining on the stability of shafts,tunnels,and surface structures.By conducting laboratory tests and applying the Hoek-Brown criterion for rock strength,the mechanical properties of the rock were determined.A three-dimensional numerical model was constructed,and FLAC3D software was used to simulate the ground deformation caused by underground mining,calculating key parameters such as maximum ground subsidence displacement,inclination,curvature,and horizontal deformation.The study found that the values of these parameters are below the safety values specified by standards,indicating that the ground structure is relatively stable and safe.

关 键 词：数值模拟 地表位移 井筒变形 地下开采 

分 类 号：TU452[建筑科学—岩土工程] TD853[建筑科学—土工工程]