露天采矿技术2024，Vol.39Issue(2)：60-64,5.DOI:10.13235/j.cnki.ltcm.2024.02.014
不同降雨条件下露天矿含泥岩弱层边坡稳定性分析
Stability analysis of slope with mudstone weak layer in open-pit mine under different rainfall conditions
李思维 1李卫鹏 1张家龙 2张亚飞 2陈天2
作者信息
- 1. 国能新疆托克逊能源有限责任公司,新疆 吐鲁番 838000
- 2. 中国矿业大学 力学与土木工程学院,江苏 徐州 221116
- 折叠
摘要
Abstract
In order to study the stability change law of slopes with mudstone weak layer in open-pit mine under different rainfall conditions,the west end slope of an open-pit coal mine in Xinjiang Autonomous Region was selected as the study area.The soil-water characteristic curve of the mudstone was obtained using the filter paper method.The coupled seepage and stress calculation of the west end slope under different rainfall conditions was carried out by COMSOL software.The results show that the safety factor of the slope experiences a rapid decline during the rainfall period and gradually recovers after the rainfall ends,but remains below the initial safety factor for an extended duration.Short-time intense rainfall has a more significant impact on slope stability than long-time weak rainfall,but the safety factor recovers faster after the rainfall ends.The plastic strain firstly arises in the mudstone weak layer and spreads gradually along the mudstone weak layer to the deeper parts of the slope,ultimately forming a plastic zone throughout the slope.关键词
泥岩弱层/边坡稳定性/降雨入渗/基质吸力/塑性区Key words
mudstone weak layer/slope stability/rainfall condition/matrix suction/plastic zone分类
矿业与冶金引用本文复制引用
李思维,李卫鹏,张家龙,张亚飞,陈天..不同降雨条件下露天矿含泥岩弱层边坡稳定性分析[J].露天采矿技术,2024,39(2):60-64,5.
