排渗盲沟布置型式对某尾矿坝渗流稳定性影响的模拟分析

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。

Seepage and Stability Simulation Analysis of a Tailings Dam by Blind Drainage Ditch Layout

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.