摘要
地下开采是金属矿山开采的主要方式,在长期开采过程中,所形成的采空区以及不稳定区域需要进行充填注浆处理。针对三山岛金矿新立矿区在治理后的稳定性评价问题,首先通过数值模拟对该矿区开采及治理后全过程稳定性进行分析,其次采用层次分析法对影响岩体稳定性的各种因素进行权重计算,将影响较大的因素作为D-S证据理论的评判指标,进行治理后的岩体稳定性评价。结果表明:治理后整体的变形量增长缓慢,塑性区变形处于稳定状态,充填治理效果良好,达到预期效果;治理情况、治理后围岩力学状态对岩体稳定性影响最大,治理前稳定性次之,地质因素影响最小。因子层中,采空区治理率影响最大。通过D-S证据理论证明所有水平在治理后处于稳定状态,其中-165 m水平稳定性相对较差,-240 m水平次之。
Underground mining is the main way of metal mining.In the long-term mining process,the goaf and unstable areas formed need to be filled and grouted.In view of the stability evaluation of Xinli mining area of Sanshandao Gold Mine af-ter treatment,firstly,the whole process stability of the mining area after mining and treatment is analyzed through numerical simulation.Secondly,analytic hierarchy process is used to determine the weight of many factors affecting the stability of rock mass,and the factors with greater influence are obtained as the evaluation index of D-S evidence theory to evaluate the stability of rock mass after governance.The results show that the overall deformation increases slowly after treatment,the deformation of plastic zone is in a stable state,and the filling treatment effect is good,reaching the expected effect.The treatment situation and the mechanical state of surrounding rock after treatment have the greatest impact on the stability of rock mass,followed by the stability before treatment,and the geological factors have the least impact.In the factor layer,the gob control rate has the grea-test impact.D-S evidence theory proves that all levels are stable after treatment,of which-165 m level is relatively poor,fol-lowed by-240 m level.
作者
李杨
夏文浩
宋卫东
康明超
杜云龙
张开诚
LI Yang;XIA Wenhao;SONG Weidong;KANG Mingchao;DU Yunlong;ZHANG Kaicheng(Shandong Gold Group Co.,Ltd,Jinan 250101,China;School of Civil and Resource Engineering,University of Science and Technology Beijing,Beijing 100083,China;Key Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mines,Beijing 100083,China;Sanshandao Gold Mine of Shandong Gold Mining(Laizhou)Co.,Ltd.,Laizhou 261442,China)
出处
《金属矿山》
CAS
北大核心
2024年第3期29-36,共8页
Metal Mine
基金
中国博士后科学基金项目(编号:2020M682205)
国家自然科学基金项目(编号:51974012,52074020)。
关键词
地下开采
层次分析法
D-S证据理论
稳定性评价
underground mining
analytic hierarchy process
D-S evidence theory
stability evaluation
