充水软弱基底排土场稳定性分析及排弃参数优化  

Stability analysis and dumping parameter optimization of water-filled weak base dump

作　　者：秦涛 任鹏 王志鹏 QIN Tao;REN Peng;WANG Zhipeng(Energy Bureau of Inner Mongolia Autonomous Region,Hohhot 010010,China;Safety Branch of China Coal Research Institute,Beijing 100013,China;China Coal Research Institute,Beijing 100013,China;State Key Laboratory of Coal Resources High Efficient Mining and Clean Utilization,Beijing 100013,China;Information Research Institute of Emergency Management Department,Beijing 100029,China)

机构地区：[1]内蒙古自治区能源局,内蒙古呼和浩特010010 [2]煤炭科学技术研究院有限公司安全分院,北京100013 [3]煤炭科学研究总院,北京100013 [4]煤炭资源高效开采与洁净利用国家重点实验室(煤炭科学研究总院),北京100013 [5]应急管理部信息研究院,北京100029

出　　处：《煤矿安全》2021年第1期237-241,共5页Safety in Coal Mines

基　　金：国家自然科学基金资助项目(71703168,51774184)。

摘　　要：针对烧变岩含水层水体入渗排土场基底诱发露天矿排土边坡变形失稳的问题,以新疆某露天矿内排土场边坡为背景,采用数值模拟方法研究了烧变岩含水层水体在排土场边坡内部的渗流规律和边坡岩土体变形移动规律,基于极薄表土与薄表土层基底极限承载力估算方法确定了内排土场极限排弃高度,采用极限平衡分析方法对内排土场排土参数进行了优化。通过研究,确定了地下水入渗影响下充水软弱基底内排土场的排弃参数。This paper aims at the problem of slope deformation and instability induced by the water from the burnt rock aquifer seeping into the basement of the dump. Taking the slope of an open pit mine in Xinjiang as the background, the water seepage law of burnt rock aquifer in the slope and the deformation and movement law of rock and soil mass in the slope are studied by numerical simulation method, based on the method of ultimate bearing capacity estimation under the condition of very thin topsoil and thin topsoil basement, the ultimate height of the inner dump was determined, the limit equilibrium analysis method is used to optimize the soil discharge parameters of the inner dump. Through the research, the discharge parameters of the soil dump in the weak basement under the influence of groundwater infiltration are determined.

关 键 词：露天矿排土场 排土边坡 边坡稳定性 软弱基底 排土参数优化 

分 类 号：TD824.8[矿业工程—煤矿开采]