露天采矿技术2025，Vol.40Issue(1)：12-15,4.DOI:10.13235/j.cnki.ltcm.20240283
降雨入渗作用下含泥岩弱层边坡变形机理研究
Study on deformation mechanism of weak layer slope with mudstone under rainfall infiltration
马明红 1王胆 1王振伟 2李元浩 2陈奇2
作者信息
- 1. 云南先锋煤业开发有限公司,云南 昆明 655211
- 2. 北方工业大学,北京 100144
- 折叠
摘要
Abstract
To investigate the deformation and failure patterns of weak layer slopes with mudstone triggered by rainfall,this article takes the north slope of Yunnan Xianfeng Open-pit Coal Mine as a case,combines saturated-unsaturated seepage theory,establishes a rainfall seepage model of the slope.We conduct seepage-stress coupling calculation on north slope during various rainfall durations by FLAC3D numerical simulations software.The results show that due to the distribution of mudstone layers,there are significant differences in the seepage and plastic failure modes of different rock layers on slopes under different rainfall durations.During the initial stages of rainfall,plastic shear failure primarily occurs at the coal seam surface and within mudstone interlayers.As rainfall progresses,this failure extends upwards through the weak mudstone layer,eventually creating a connected area.关键词
泥岩/数值模拟/降雨入渗/软弱夹层/渗流-应力耦合Key words
mudstone/numerical simulation/rainfall infiltration/weak intersection/seepage-stress coupling分类
矿山工程引用本文复制引用
马明红,王胆,王振伟,李元浩,陈奇..降雨入渗作用下含泥岩弱层边坡变形机理研究[J].露天采矿技术,2025,40(1):12-15,4.
