岩土工程学报2017，Vol.39Issue(z1)：101-105,5.DOI:10.11779/CJGE2017S1020
水泥砾质土渗透特性试验研究
Permeability characteristics of cement-gravel soil
摘要
Abstract
The triaxial permeability tests on cement-gravel soil are conducted using the improved triaxial test apparatus. Various factors including cement mixing ratio, gravel content, degree of compaction and seepage pressure that have effects on the permeability characteristics of cement-gravel soil are analyszed and discussed. The results show that the permeability resistance of cement-gravel soil is improved significantly with the increase of the cement mixing ratio. The permeability resistance of cement-gravel soil satisfies the requirements of core wall of earth-rockfill dams in the range of 30% ~ 50% of mixed gravel. Under the same mixing amount of gravel, the permeability coefficient of cement-gravel soil decreases with the increase of the degree of compaction. The permeability resistance of cement-gravel soil is greatly improved with the compaction degree of 98%. Under the same stress state, k20-P curve meets hyperbola model, and the hyperbola model can be converted into the linear relationship between P/k20 and P. The results can provide technical support for the permeability characteristics of cement-gravel soil applied to the core of high earth-rockfill dams.关键词
水泥砾质土/渗透特性/高土石坝/心墙料Key words
cement-gravel soil/permeability characteristic/high earth-rockfill dam/core material分类
建筑与水利引用本文复制引用
刘忠,朱俊高,乔瑞社,郝伯瑾,王娟..水泥砾质土渗透特性试验研究[J].岩土工程学报,2017,39(z1):101-105,5.基金项目
水利部提防安全与病害防治工程技术研究中心开放课题基金项目(2016002) （2016002）
国家自然科学基金项目(51609098,51309203) （51609098,51309203）
黄河水利科学研究院科研基金项目(HKY-JBYW-2014-03) （HKY-JBYW-2014-03）
