岩土工程学报2024，Vol.46Issue(z1)：191-196,6.DOI:10.11779/CJGE2024S10028
超高沥青混凝土心墙坝砂板岩堆石料试验研究
Experimental study on sand slate rockfill materials for ultra-high asphalt concrete core dams
张石 1吴世勇 1吴忠 1凌华 2傅华 2石北啸2
作者信息
- 1. 中国电建集团华东勘测设计研究院有限公司,浙江 杭州 311122
- 2. 南京水利科学研究院岩土工程研究所,江苏 南京 210024||水利部水库大坝安全重点实验室,江苏 南京 210024
- 折叠
摘要
Abstract
A series of tests are conducted on the engineering mechanical properties of sand slate rockfill materials for an ultra-high asphalt concrete core dam.It is found that with the increase of the porosity and slate content,the softening behavior of stress-strain curve weakens and the peak strength decreases.The volume change increases,and the shear dilation phenomenon fades during the shearing process.The linear strength indexes c and φ,the nonlinear strength indexes φ 0 and Δ φ,and the Duncan model parameters K and Kb all decrease.The empirical formulas for the strength indexes and deformation parameters are proposed to predict the engineering mechanical properties of the sand slate rockfill materials with different slate contents and porosities precisely.It is also found that the permeability decreases with the increase of the slate content.The slate content is one important factor for the permeability performance of rockfill materials,and the drainage design of the rockfill area should be considered in the dam design.关键词
砂板岩堆石料/强度指标/变形参数Key words
sand slate rockfill material/strength index/deformation parameter分类
建筑与水利引用本文复制引用
张石,吴世勇,吴忠,凌华,傅华,石北啸..超高沥青混凝土心墙坝砂板岩堆石料试验研究[J].岩土工程学报,2024,46(z1):191-196,6.
