石头梅一号露天煤矿顺层边坡稳定性评价及治理措施  

Stability evaluation and control measures of bedding slope in Shitoumei No.1 Open-pit Coal Mine

作　　者：吕承贤 张东华[2] LYU Chengxian;ZHANG Donghua(Xinjiang Hami Santanghu Energy Development Construction Co.,Ltd.,Hami 839200,China;School of Mines,Taiyuan University of Technology,Taiyuan 030024,China)

机构地区：[1]新疆哈密三塘湖能源开发建设有限责任公司,新疆哈密839200 [2]太原理工大学矿业工程学院,山西太原030024

出　　处：《露天采矿技术》2023年第2期46-49,共4页Opencast Mining Technology

基　　金：山西省省筹资金资助回国留学人员科研资助项目(2021-045)。

摘　　要：针对2020年11月以来石头梅一号新建露天煤矿非工作帮的顺层边坡出现了多处变形破坏,伴随出现地表裂缝的情况,采用室内实验的方法和参考往年实验结果,确定了岩石抗剪强度和结构面参数,以2021年6月的工况为基准,选取了JC2、JC3、JC4共3条典型剖面线,采用Udec二维软件计算的剖面线稳定系数分别是1.1、1.08、1.05,仅JC2剖面线的安全系数满足规范的要求。提出了优化设计边坡、疏干排水、削坡减载和压坡脚、降低动载荷等工程技术措施,以及地表位移监测、深部位移监测和边坡巡视结合的边坡监控措施。非工作帮的顺层边坡经过治理,台阶滑塌逐渐消失,裂缝扩展趋于稳定,顺层边坡治理取得了良好的治理效果。Based on the fact that since November 2020,there have been many deformation and damages in the non-working side slopes of the newly built open-pit coal mine in Shitoumei No.1 Open-pit Mine,accompanied by surface cracks.Using laboratory experiments and referring to the experimental results of previous years,the rock shear strength and structural plane parameters are determined.Based on the working conditions in June 2021,three typical section lines of JC2,JC3 and JC4 are selected,and Udec two-dimensional software is selected.The calculated section line stability factors are 1.1,1.08,and 1.05,respectively,and only the safety factor of the JC2 section line meets the requirements of the code.The engineering technical measures such as optimizing the design of the slope,dredging and draining,cutting the slope and reducing the load and pressing the slope foot,and reducing the dynamic load are put forward,as well as the slope monitoring measures combining the surface displacement monitoring,the deep displacement monitoring and the slope inspection.After the treatment of the non-working smooth slope,the step collapse gradually disappears,the crack expansion tends to be stable,and the treatment of the smooth slope has achieved good treatment effect.

关 键 词：非工作帮 顺层边坡 抗剪强度 位移监测 稳定系数 

分 类 号：TD824.7[矿业工程—煤矿开采]