摘要
高台阶排土工艺使得排土场呈现高陡边坡趋势,降雨则是诱发高陡边坡滑动的一个重要因素。以某多雨地区高陡边坡排土场为例,开展了长历时降雨条件下渗流演化规律及稳定性影响分析。研究表明:排土场堆积高度越大,降雨对内部孔隙水压力分布的影响越小;排土场稳定性在不同降雨时期受深层和浅层2种不同的滑动方式控制;降雨引起抗滑稳定系数的降低速率大于停雨后安全系数的升高速率。
High Bench dumping process makes the dump presents a trendcy of high and steep slope,and rainfall is an important cause of inducing high and steep slope to slide.Taking the high and steep slope drainage field in a rainy area as an example,through the example of a high and steep slope dump which is in abundant rainfall area,seepage evolution regularity and stability analysis under long duration rainfall is done.The results show that:the higher the height of the dump,the smaller the influence of rainfall on the distribution of pore water pressure;the stability of slope is controlled by two sliding modes of deep layer and shallow layer in different rainfall periods;the decrease rate of anti-slip stability coefficient caused by rainfall is greater than the increase rate of safety coefficient after raining.
作者
韩亚兵
崔旋
甘海阔
刘欣欣
Han Yabing;Cui Xuan;Gan Haikuo;LiuXinxin(Institute of Mining Engineering,Beijing General Research Institute of Mining and Metallurgy;Beijing Key Laboratory of Nonferrous Intelligent Mining Technology)
出处
《现代矿业》
CAS
2018年第11期190-194,共5页
Modern Mining
基金
国家重点研发计划项目(编号:2017YFC0804608)
北京矿冶科技集团有限公司科技产业发展基金项目(编号:04602018-122)
关键词
排土场
高陡边坡
降雨
渗流分析
稳定性
Dump
High and steep slope
Rainfall
Seepage analysis
Stability
作者简介
韩亚兵(1987—),男,工程师,硕士,102600北京市大兴区北兴路东段22号。
