高速公路下开采的地表沉降控制与预测  

Control and Prediction on Surface Subsidence for Mining Under Highway

作　　者：侯春来[1] 吴爱祥[1] 王贻明[1] 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083

出　　处：《矿业研究与开发》2016年第5期23-27,共5页Mining Research and Development

摘　　要：某铜锌矿位于高速公路之下,为保证高速公路的安全运行,在分析地质条件的基础上,提出预留100 m保安矿柱和采用嗣后充填采矿法两大保护措施,以控制地表岩移对高速公路产生的影响;借助FLAC3D数值模拟软件,模拟回采充填过程,分析地表岩移规律。模拟结果显示,在两种保护措施的共同影响下,高速公路沿线的水平变形最大值为1.3×10^(-3)mm/m、倾斜变形的最大值为-1.56×10^(-3)mm/m、曲率的最大值为0.032×10^(-3)/m,均符合安全规定,表明在此方案下,地下开采不会对高速公路的安全运行产生影响。A copper mine located under the highway.In order to ensure the safe traffic of highway,two protection measures,including setting 100 mof safety pillar and using subsequent backfilling,were put forward to control the influence of surface subsidence on highway based on analyzing the geological condition.The FLAC（3D） software was used to simulate the stoping and filling process,and to analyze the subsidence rule.The simulation results showed that under the action of two protection measures,the parameters of highway with the highest horizontal deformation of 1.3×10（-3）mm/m,the highest inclination deformation of-1.56×10（-3）mm/m and the highest curvature deformation of 0.032×10（-3）/m were all accorded with the safety laws,which meant that the mining activities would have no impact on the safe traffic of highway under the measures.

关 键 词：FLAC3D 地表沉陷预测 “三下”开采 嗣后充填采矿法 保安矿柱 

分 类 号：TD325.4[矿业工程—矿井建设]