摘要
管涌会给尾矿坝的的安全带来很大威胁,因此进行管涌的现场试验和室内砂槽模型试验,观察并分析了管涌发生、发展并导致溃坝的机理和过程。管涌的发生与最大有效粒径、饱和容重、渗透系数、下游滤层倾角、地层中土的组成成分、土的级配、水力梯度、土的结构、表面覆盖层土体的内摩擦角、黏滞系数、覆盖层厚度、黏聚力、土的饱和度等因素有关,是一个多元非线性的复杂问题。
Piping will bring a great threat to the tailings dam safety,the piping field test and indoor sand tank model test has been done,observation and analysis of the occurring of piping,the whole development processes from piping incipit to dike failure are observed and their mechanisms are analyzed.Piping occurs because of the maximum effective diameter,coefficient of permeability,saturation density,the downstream filter layer dip,hydraulic gradient,soil composition,soil stratum structure,soil gradation,covering layer of the surface soil friction angle,cohesion,cover thickness,viscosity,degree of saturation and other factors and it is a multivariate nonlinear complex problem.
出处
《工业安全与环保》
北大核心
2013年第6期37-39,共3页
Industrial Safety and Environmental Protection
关键词
尾矿坝
管涌
渗透破坏
临界比降
tailings dam piping seepage failure critical seepage gradient
