煤矿安全2024，Vol.55Issue(12)：57-62,6.DOI:10.13347/j.cnki.mkaq.20240625
水浸泥岩基底内排土场边坡稳定性分析
Stability analysis of internal waste dump slope in water immersed mudstone base
摘要
Abstract
In order to reveal the instability mechanism of waste dump slope in water soaked mudstone base,the damage evolution law of shear strength parameters of weak mudstone layer with water content is explored by indoor test.Combined with numerical calculation software,the response characteristics of water content to displacement,sliding failure characteristics and safety factor of waste dump slope are analyzed.The results show that with the increase of water content in weak mudstone layer,the distribution law of cohesion and internal friction angle decreases nonlinearly;the maximum horizontal displacement,maximum vertical displace-ment and maximum shear strain of the slope are positively correlated with the water content.The slope is dominated by horizontal movement,mainly showing sliding failure along the contact surface of the waste dump base;the safety factor of the slope is negat-ively correlated with the water content.In order to ensure the stability of the slope,it is recommended that the water content of the weak layer of mudstone should not exceed 30%.关键词
边坡稳定性/泥岩基底/内排土场/含水率/边坡安全系数Key words
slope stability/mudstone basement/internal dump/moisture content/slope safety factor分类
矿业与冶金引用本文复制引用
赵汝辉..水浸泥岩基底内排土场边坡稳定性分析[J].煤矿安全,2024,55(12):57-62,6.基金项目
煤炭科学技术研究院有限公司技术创新基金资助项目(2023CX-Ⅰ-08) （2023CX-Ⅰ-08）
