摘要
岩土体材料形成条件特殊,与地域因素联系紧密,其力学性质一般具有很明显的地域性,而抗剪强度指标是岩土工程设计中的重要力学参数。通过概率统计的方法对三峡库区58组粉质黏土抗剪强度参数进行概率统计分析,利用χ^2检验法进行拟合检验,得到土体抗剪强度参数c、φ的概率分布形式,分析表明:抗剪强度参数c、φ值分别服从对数正态分布和正态分布特征,可为三峡库区滑坡的地质灾害治理防治工作提供参考。
The formation of geotechnical materials requires special conditions and is closely related regional features.The mechanical properties of geotechnical materials are generally of obvious regional characteris - tics.The shear strength index is an important mechanical parameter in geotechnical engineering design. The probability statistical analysis of 58groups of silty clay shear strength parameters in the Three Gorges Reservoir Area is carried out by using probability statistical method.The fitting test is carried out by using the χ^2 test method , and the shear strength c and φ of soil is obtained.The probability distribution form of degree parameter shows that the shear strength parameters c and φ values follow lognormal distribution and normal distribution respectively.It can provide reference for the prevention and control of landslides in the Three Gorges Reservoir area.
作者
邹先进
夏承志
刘珉玮
朱蕾
ZOU Xianjin;XIA Chengzhi;LIU Minwei;ZHU Lei(School of Civil Engin., Architecture and Environment , Hubei Univ.of Tech.,Wuhan 430068,China)
出处
《湖北工业大学学报》
2019年第5期92-95,共4页
Journal of Hubei University of Technology
基金
国家自然科学基金面上项目(41372363)
国家重点主任基金(41641027)
三峡后续工作地质灾害防治项目(0001212015CC60005)
关键词
粉质黏土
抗剪强度参数
概率统计
对数正态分布
正态分布
silty clay
shear strength parameters
probability statistics
lognormal distribution
normal distribution
