摘要
设计了砂土流动性试验，用于研究含黏砂土的流动性，并分别对5％～20％含黏量的细、中、粗砂土样进行了流动性试验．结合其它土工试验，认识到合黏砂土具有渗漏自愈性，漏斗出口直径是砂土能否稳定的关键因素．获得了破坏渗孔直径与混合料d50之比，粗砂约为10；中砂约为20；细砂为73．观测到中砂混合料流量随含黏量增大而明显减小，而细砂混合料流量随含黏量增大而变化不明显．
Several tests were carried out to study the fluidity of sand blended with clay. The samples used involved fine sand, medium sand, and coarse sand blended with 5% -20% content of clay, respectively. Self healing of the sands was found through the tests and other related tests, and the diameter of the seepage exit plays an important role in the stabilization of the sand blended with clay. The ratio of limit diameter to d50 of the sand is 10 for coarse sand, 20 for medium sand, and 73 for fine sand, respectively. It is also found from the tests that the discharge flow decreases with the increase of clay content for blended medium sand, while has little change for blended fine sand.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2008年第5期496-499,共4页
Journal of China Coal Society
基金
国家自然科学基金资助项目(50274042)
国家重点基础研究发展计划(973)基金资助项目(2007CB209402)
关键词
含黏砂土
流动性
溃砂
sand blended with clay
fluidity
inrush of sand
