露井联采下的边坡滑移规律分析  

Analysis of Slope Sliding Law Under Open-Pit and Underground United Mining

作　　者：孙世国[1] 贾欣欣 刘文波[1] 肖剑 SUN Shiguo;JIA Xinxin;LIU Wenbo;XIAO Jian(North China University of Technology,Beijing 100144,China;China Metallurgical Communications Construction Group Co. ,Ltd. ,Sanhe Hebei 065200,China)

机构地区：[1]北方工业大学,北京100144 [2]中冶交通建设集团有限责任公司,河北三河065200

出　　处：《北京工业职业技术学院学报》2021年第3期1-5,共5页Journal of Beijing Polytechnic College

基　　金：国家自然科学基金(41772335);中国五矿集团有限公司项目“变截面锚杆(索)加固技术与灾变监测一体化预警体系研发”(WKJT2019-2-11);国家自然科学基金面上项目(51774184);北方工业大学毓优团队项目(107051360019XN134/017);北方工业大学科研启动基金项目(110051360002)。

摘　　要：为保证露井联采下边坡岩体的稳定性,以紫金山金铜矿为例,利用数值模拟方法建立模拟模型,系统模拟研究边坡岩体应力场和位移矢量场演化特点,揭示采空区上覆岩体滑移机理与动态演变规律,建立露井联采作用下的地表三维沉降模型和水平移动模型。实例计算结果表明:对采空区进行充填开采时,随着开采阶段向下延深,地下开采效应对上覆岩体影响逐渐减小,此时露井联采综合作用的边坡体主要受露天开采影响大小控制;当由+30 m水平开采至-150 m水平阶段时,边坡岩体发生局部破坏,破坏形式为塌陷破坏,需要进行局部加固处理。In order to ensure the stability of slope rock mass under open-pit and underground united mining,taking Zijinshan Gold Copper Mine as an example,the numerical simulation method was used to establish the simulation model,systematically simulate the evolution characteristics of stress field and displacement vector field of slope rock mass,reveal the sliding mechanism and dynamic evolution law of overlying rock mass in goaf,and establish the surface three-dimensional settlement model and horizontal movement model under open-pit and underground united mining.The calculation results show that the influence of underground mining effect on the overlying rock mass gradually decreases with the mining stage extending downward,and the slope body under the combined action of open-pit and underground united mining is mainly controlled by the influence of open pit mining.When mining from+30 m level to-150 m level,the slope rock mass will be damaged locally,and the failure mode is collapse,which needs to be strengthened locally.

关 键 词：露井联采 滑移机制 破坏方式 边坡稳定 

分 类 号：TD85[矿业工程—金属矿开采]