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现代矿业 ›› 2018, Vol. 34 ›› Issue (11): 190-194.

• 安全·职业健康 • 上一篇    下一篇

长历时降雨对高陡边坡排土场渗流影响分析及稳定性研究

韩亚兵1,2,崔旋1,2,甘海阔1,2,刘欣欣1,2   

  1. 1.北京矿冶科技集团有限公司;2.金属矿山智能开采技术北京市重点实验室
  • 出版日期:2018-11-25 发布日期:2018-12-27
  • 基金资助:

    * 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)。

Seepage Analysis and Stability Study of High and Steep Slope Dump under Long Duration Rainfall

Han Yabing1,2,Cui Xuan1,2,Gan Haikuo1,2,LiuXinxin1,2   

  1. 1.Institute of Mining Engineering, Beijing General Research Institute of Mining and Metallurgy; 2.Beijing Key Laboratory of Nonferrous Intelligent Mining Technology
  • Online:2018-11-25 Published:2018-12-27

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。

关键词: 排土场, 高陡边坡, 降雨, 渗流分析, 稳定性

Abstract: 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.

Key words: Dump, High and steep slope, Rainfall, Seepage analysis, Stability