摘要
通过室内粗颗粒土的大型三轴和单轴试验,对粗颗粒土的颗粒破碎特性进行了研究,并分析了粗颗粒土母岩性质、级配、围压及应力状态对颗粒破碎的影响.结果表明:粗颗粒土的母岩强度或细颗粒含量越高,或粗颗粒土的浑圆度越好,颗粒破碎率越小;随着围压和应力的增大,粗颗粒土的颗粒破碎率也呈增大趋势.
Through laboratory large scale triaxial and uniaxial tests on coarse grained soil, the characteristics of particle breakage were studied. The effect of mother rock character, gradient, pressure and stress of the coarse grained soil on the particle breakage was analyzed. The test results show that the larger the strength of the mother rock or the higher the content of fine particles or the better the roundness of the particles, the lower the ratio of particle breakage; with the development of the pressure and stress, the ratio of particle breakage regularly increases.
出处
《河海大学学报（自然科学版）》
CAS
CSCD
北大核心
2009年第1期75-79,共5页
Journal of Hohai University(Natural Sciences)
基金
国家自然科学基金委员会
二滩水电开发有限责任公司雅砻江水电开发联合基金(50639050)
关键词
粗颗粒土
颗粒破碎率
影响因素
coarse grained soil
particle breakage
influencing factor
