摘要
为探索不同排渗盲沟布置型式对尾矿坝渗流稳定性的影响,以某尾矿库为例,通过开展无盲沟、尾粉砂中布置水平向盲沟、尾粉砂中布置垂直向+水平向排渗盲沟、尾粉土中布置水平向盲沟、尾粉土中布置垂直向+水平向排渗盲沟5种布置型式下坝体渗流场、孔隙水压力及稳定性的模拟分析。研究结果表明:尾粉土中布置垂直向+水平向排渗盲沟对坝体浸润线埋深及安全系数影响最大,并给出了不同布置型式对尾矿坝渗流及稳定性影响的大小比较,为尾矿坝排渗设计提供参考依据。
In order to explore the influence of different blind drainage ditch layout on the seepage and stability of tailings dam.Taking a tailings dam as an example in this paper,the seepage field,pore water pressure and stability of the dam body are simulated and analyzed in five types of drainage patterns: without blind ditch,horizontal blind ditch in the tailing silty sand,vertical and horizontal blind ditch in the tailing silty sand,horizontal blind ditch in the tail silt soil,vertical and horizontal blind ditch in the tail silt soil.The results show that the type of vertical and horizontal blind ditch in the tail silt soil has the greatest influence on the depth of phreatic line and safety factor of dam body.And the influence of different layout patterns on seepage and stability of tailings dam are compared.It can provide a reference for drainage design of a tailings dam.
作者
韩亚兵
崔旋
Han Yabing;Cui Xuan(BGRIMM Technology Group)
出处
《现代矿业》
CAS
2019年第9期68-71,共4页
Modern Mining
基金
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
尾矿坝
排渗盲沟
渗流
浸润线
稳定性
Tailings dam
Blind drainage ditch
Seepage
Phreatic line
Stability