摘要
由于铀尾矿库坝体尾矿砂的碎散性和多相性,渗流作用下相互接触的土颗粒组成的“土骨架”出现的变形或破坏一直受到高度重视,但对其渗透破坏的影响参数试验研究较少。铀尾矿坝体的粗粒土粒径级配不均匀系数、含水率不同的抗剪强度等是影响临界水力坡降的主要因素。在试验的基础上,通过分析得出铀尾矿砂颗粒均匀且级配良好、含水率为26%~34%的粗粒土渗透破坏坡降,比颗粒不均匀、含水率不佳的粗粒土渗透破坏坡降明显提高的结论。
The deformation or destruction of soil skeleton composed of soil particles due to seepage is highly valued because of the fragmentation and multiphase property of uranium tailing sands in the tailing pond,however,there have been few trials about the influence factors of its infiltration damage.Uneven coefficient of grain size distribution of coarse grained soil and sheer strength of different water content are the major factors affecting the critical hydraulic gradient in the main body of uranium tailing pond.On the basis of the test,it is concluded that the uranium tailing sand particles are uniform and well-graded,and the penetration damage slope-to-slope ratio of the coarse-grained soil with a water content of 26%to 34%is obviously higher than that of coarse-grained soil with uneven particle ratio and poor moisture content.
作者
孔晓娜
刘永
李向阳
李瑞清
何叶
KONG Xiaona;LIU Yong;LI Xiangyang;LI Ruiqing;HE Ye(School of Environmental and Safety Engineering,University of South China,Hengyang,Hunan 421001)
出处
《工业安全与环保》
2019年第9期30-32,36,共4页
Industrial Safety and Environmental Protection
基金
国家环保部安全监管项目(1620,1721)
湖南省自然科学基金(2017JJ4009,2017JJ2232)
关键词
铀尾矿库
不均匀系数
抗剪强度
渗透破坏
fluranium tailings pond
uneven coefficient
shear strength
penetration damage
