摘要
水是影响露天煤矿边坡稳定性的重要因素。为了研究泥岩及泥岩弱层含水率对顺倾软岩基底内排土场稳定性的影响,以内蒙古东部某露天煤矿2021年及2022年内排土场设计边坡为例,对岩土物理力学性质和边坡稳定性进行了研究,并提出了合理的防治水方案。研究结果表明,泥岩及泥岩弱层含水率的降低会降低内排土场从基底滑动的风险。最终确定设计边坡泥岩及泥岩弱层含水率降至27.3%时,可保证内排土场边坡处于稳定状态。
Water is an important factor affecting the stability of open-pit coal slopes.Taking the de⁃sign side slope of the dump in 2021 and 2022 of an open-pit coal mine in eastern Inner Mongolia as an ex⁃ample,the influence of the water content of mudstone and weak mudstone layers on the stability of the dump in the down-dip soft rock basement is studied.The physical and mechanical properties of the rock and soil and slope stability were studied,and a reasonable water prevention plan was put forward.The results of the study show that the decrease of the water content of mudstone and weak mudstone layers will reduce the risk of the internal dumping site sliding from the basement.It is finally determined that when the water con⁃tent of the mudstone and weak mudstone layers of the designed slope falls to 27.3%,it can ensure that the slope of the internal dump is in a stable state.
作者
赵贵彬
封海洋
韩猛
李金典
ZHAO Guibin;FENG Haiyang;HAN Meng;LI Jindian(Zanihe Open-pit Mine,Inner Mongolia Dayan Mining Group Co.,Ltd.;China Coal Technology and Engineering Group Shenyang Research Institute Co.,Ltd.;State Key Laboratory of Coal Mine Safety Technology)
出处
《现代矿业》
CAS
2021年第4期91-94,共4页
Modern Mining
关键词
露天煤矿
顺倾软岩基底
泥岩弱层
含水率
内排土场
open pit coal mine
downward soft rock basement
weak mudstone
moisture content
inter⁃nal dump
