抚顺东露天矿露井联采下边坡变形机理研究  

Study on deformation mechanism of slope under combined open-pit and underground mining in Fushun East Open-pit Mine

作　　者：任健 张晶 魏国龙[4] 崔原[4] REN Jian;ZHANG Jing;WEI Guolong;CUI Yuan(Institute of Geomechanics,Chinese Academy of Geological Sciences,Beijing 100081,China;Observation and Research Station of Geological Disaster in Baoji,Shaanxi Province,Ministry of Natural Resources,Baoji 721001,China;Key Laboratory of Active Tectonics and Geological Safety,Ministry of Natural Resources,Beijing 100081,China;Liaoning Tenth Geological BrigadeLimitedLiabilityCompany,Fushun113004,China)

机构地区：[1]中国地质科学院地质力学研究所,北京100081 [2]自然资源部陕西宝鸡地质灾害野外科学观测研究站,陕西宝鸡721001 [3]自然资源部活动构造与地质安全重点实验室,北京100081 [4]辽宁省第十地质大队有限责任公司,辽宁抚顺113004

出　　处：《煤矿安全》2022年第11期244-253,共10页Safety in Coal Mines

基　　金：国家自然科学基金重点资助项目(42130720);中国地质科学院地质力学研究所基本科研业务费资助项目(DZLXJK202007)。

摘　　要：抚顺东露天矿在空间上与其下部的老虎台矿和老龙凤矿在平面上存在重叠,在标高上区分,在时间上存在露井联采时期。在野外调查的基础上,通过数值模拟,分析露井联采作用下边坡的变形、受力特征;总结了E8800、E5400南北帮的变形特征;分析了E8800、E5400 2个剖面南帮的稳定性。结果表明:现阶段边坡岩体和地下岩体塑性区基本由井采造成,露采作用下仅在南、北帮局部形成小范围的拉张塑性区;现阶段2个剖面北帮的坡度均不超过10°,但北帮塑性区均十分发育,在露采持续进行的情况下,应重点关注北帮的稳定性情况。Fushun East Open-pit Mine overlaps with its lower Laohutai Mine and Laolongfeng Mine in space, and is distinguished in elevation, and there is a period of combined open-pit and underground mining in time. On the basis of field investigation,through numerical simulation, the deformation and stress characteristics of the slope under the combined open-pit and underground mining are analyzed. The deformation characteristics of the E8800 and E5400 southern and northern sides are summarized, and the stability of the southern part of the two profiles has been studied. The results show that the plastic zone of the slope rock mass and underground rock mass is basically caused by underground mining at this stage, and only a small area of tensile plastic zone is formed in the southern and northern gangs under the action of open mining. At this stage, the slope of the northern part of the two profiles is not more than 10 degrees, but the plastic zone of the northern part is very developed. In the case of continuous open mining, the stability of the northern part should be paid attention to.

关 键 词：露井联采 露天矿边坡 边坡变形特征 边坡稳定性 岩体塑性区 

分 类 号：TD824.7[矿业工程—煤矿开采]