倾斜基底排土稳定分析及边坡角优化  

Stability analysis and slope angle optimization of sloping foundation dumping

作　　者：白宇 闫杰 钟晓勇 王志权 BAI Yu;YAN Jie;ZHONG Xiaoyong;WANG Zhiquan(Guoneng Xinjiang Tokson Energy Co.,Ltd.,Toksun 838000,China;Inner Mongolia Pingxi Baiyinhua Coal Co.,Ltd.,Xiwuqi 026200,China;China Coal Research Institute Co.,Ltd.,Beijing 100013,China;Hulunbei’er Dongming Mining Co.,Ltd.,Hailar 021000,China;China Coal Technology and Engineering Group Shenyang Research Institute,Fushun113122,China;State Key Laboratory of Coal Mine Safety Technology,Fushun113122,China)

机构地区：[1]国能新疆托克逊能源有限责任公司,新疆托克逊838000 [2]内蒙古平西白音华煤业有限责任公司,内蒙古锡林郭勒026200 [3]煤炭科学技术研究院有限公司,北京100013 [4]呼伦贝尔东明矿业有限责任公司,内蒙古海拉尔021000 [5]中煤科工集团沈阳研究院有限公司,辽宁抚顺113122 [6]煤矿安全技术国家重点实验室,辽宁抚顺113122

出　　处：《露天采矿技术》2023年第6期72-75,79,共5页Opencast Mining Technology

摘　　要：针对倾斜基底排土及排土场稳定性问题,以黑山露天煤矿北帮倾角15°~17°基底为工程背景,开展了排土方案与稳定性研究;分析了倾斜基底排土变形特征与滑动模式;开展倾斜基底15 m单台阶排土、组合台阶排土及最优排土角度分析研究;根据运输道路宽度与排土收纳能力,选取最优排土方案。结果表明:组合台阶宽度>20 m,排土台阶之间互不影响;排土边坡角<21°,边坡整体稳定性大于1.3;最终方案组合为台阶距离20 m,边坡角20.2°。Aiming at the problems of inclined basement dumping and dump stability,based on the engineering background of 15~17°basement in the north slope of Heishan Open-pit Coal Mine,the article carries out the research on the dumping scheme and stability.The article analyzes deformation characteristics and sliding mode of inclined base dumping,carries out analysis and research on 15 m single-bench dumping,combined-bench dumping and optimal dumping angle of inclined basement.According to the width of the transportation road and the storage capacity of the dumping,the optimal dumping scheme is selected.The results show that the width of the combined steps is more than 20 m,and the dumping steps do not affect each other;the slope angle is less than 21°,and the overall stability of the slope is greater than 1.3.Finally,the scheme combination step distance is 20 m and the slope angle is 20.2°.

关 键 词：内排土场 滑动模式 稳定系数 边坡角 组合台阶 

分 类 号：TD824.7[矿业工程—煤矿开采]