伊敏露天煤矿内排土场边坡稳定性研究  

Study on internal dump slope stability in Yimin Open-pit Coal Mine

作　　者：姜海涛 张清清 王朋飞 高聪 JIANG Haitao;ZHANG Qingqing;WANG Pengfei;GAO Cong(Beijing Baocheng Construction Group Co.,Ltd.,Beijing 101407,China;China Coal Science and Engineering Group Shenyang Research Institute Co.,Ltd.,Fushun 113122,China;State Key Laboratory of Coal Mine Safety Technology,Fushun 113122,China;College of Mining Engineering,Taiyuan University of Technology,Taiyuan 030024,China;Shanxi Xiyang Anshun Sandu Coal Industry Co.,Ltd.,Yangquan 045300,China)

机构地区：[1]北京宝丞建设集团有限公司,北京101407 [2]中煤科工集团沈阳研究院有限公司,辽宁抚顺113122 [3]煤矿安全技术国家重点实验室,辽宁抚顺113122 [4]太原理工大学矿业工程学院,山西太原030024 [5]山西昔阳安顺三都煤业有限公司,山西阳泉045300

出　　处：《露天采矿技术》2024年第6期49-52,共4页Opencast Mining Technology

摘　　要：为研究伊敏露天矿内排土场增高扩容的可行性,需定量地研究内排土场边坡的稳定性。采用了工程地质勘查手段,获取了地层岩性的空间分布规律,建立了典型工程地质剖面,根据物理测井成果,对地质剖面进行了校准;运用了物理测井法、岩土物理力学试验法及强度折减公式,综合确定了岩土体物理力学指标推荐值;采用了有限差分方法,研究了内排土场边坡的潜在变形破坏模式。结果表明:内排土场整体边坡为“圆弧剪切+顺层滑移”的潜在变形破坏模式,内排土场整体边坡处于稳定状态,边坡安全储备系数满足煤炭工业露天矿设计规范要求。In order to study the feasibility of the increasing and expanding internal dump of Yimin Open-pit Mine,the slope stability of the internal dump should be studied quantitatively.By mean of engineering geological exploration,the article obtains spatial distribution of strata and establishes the typical engineering geological profile model.The typical engineering geological profile model is recalibrated according to the physical logging results;by using the physical logging results,the rock soil physical mechanical tests and the strength reduction formula,the recommended physical mechanics index values of rock soil are determined comprehensively;we use the finite difference software to study the deformation failure mode.The results show that the potential deformation failure mode of the whole internal dump slope is“circular shear bedding slip”mode,The stability of internal the whole internal dump slope is be in steady state,the stability factor meets the requirements of the code for design of open-pit mine of coal industry.

关 键 词：内排土场 失稳模式 极限平衡 增高扩容 稳定性研究 

分 类 号：TD824.7[矿业工程—煤矿开采]