露井协采边坡变形破坏规律与失稳机理研究  

Study on Deformation and Failure Law and Instability Mechanism of Slope in Open-underground Mining

作　　者：王振伟[1] 丁鑫品[2] 刘博文 李营作 WANG Zhenwei;DING Xinpin;LIU Bowen;LI Yingzuo(North China University of Technology,Beijing 100144,China;China Coal Research Institute,Beijing 100013,China;China University of Mining and Technology(Beijing),Beijing 100083,China)

机构地区：[1]北方工业大学,北京100144 [2]煤炭科学研究总院,北京100013 [3]中国矿业大学(北京),北京100083

出　　处：《煤矿安全》2020年第4期231-234,共4页Safety in Coal Mines

基　　金：国家自然科学基金面上资助项目(51774184);中国煤炭科工集团有限公司科技创新创业资金青年资助项目(2018-TD-QN005);北方工业大学毓优团队资助项目(107051360019XN134/017);北方工业大学科研启动基金资助项目(110051360002)。

摘　　要：基于现有关键层理论,提出了控制露井协采边坡稳定性的"关键岩层"概念,以平朔矿区露井协采为例,研究了露井协采边坡的变形破坏规律及岩层移动规律;采用物理模拟和数值分析相结合的方法对理论分析结果进行了验证。研究结果表明:在"关键岩层"耦合作用下,露井协采边坡各平盘主要表现为沉降滑移破坏和潜在滑移破坏2种变形破坏模式,露井协采边坡的稳定性取决于关键硬岩层提供的滑动力和关键弱层提供的抗滑力之间的抗衡关系,物理模拟、数值分析结果与理论研究结果基本吻合。Based on the existing key strata theory, the concept of "the key strata"which controls the open-underground mining slope stability was proposed, taking open-underground mining in Pingshuo Mining Area as an example, the deformation and failure regularity and the regularity of strata movement about the slope of open-underground mining was studied, the theoretical analysis results are verified by the physical simulation and numerical analysis method. The results showed that under the coupling action of"the key strata", the slope mainly shows that two kinds of deformation and failure modes which are settlement of sliding failure and potential sliding failure, the stability of open-underground mining slope depends on the counterbalance between the slip power provided by the critical hard rock and the sliding resistance provided by the weak layer, and the physical simulation, the results of numerical analysis and theoretical research results have obvious consistency.

关 键 词：露井协采 关键岩层 露天矿 边坡变形 物理模拟 

分 类 号：TD824.7[矿业工程—煤矿开采]