摘要
分析表明,赋存环境相同、粘土矿物成分以伊利石为主的软弱夹层,在相同稠度状态下粘粒含量与抗剪强度参数具有很好的相关性。通过现场和大量的室内试验成果,建立了各种稠度状态下粘粒含量和抗剪强度参数之间的相关关系式,揭示了在研究粘粒含量对抗剪强度参数影响时,还应当考虑软弱夹层所处的天然状态。结合《混凝土重力坝设计规范》中提出的用粒度成分定量指标选取软弱结构面抗剪强度参数,对软弱夹层抗剪强度参数取值问题进行了探讨。
A good correlativity exists between clay grain content and shearing strength parameter of weak intercalations, under the conditions of identical geological environment and main mineral constituents of illite and same consistancy states.Based on the large amount of data obtained from test,correlated equations are established in different consistency states,and this paper details the principle that natural state of weak intercalation must be considered in studying effect of clay grain content on shearing strength parameter.Bonding with 'Design specification for concrete gravity dams',shearing strength parameter is discussed.
出处
《中国地质灾害与防治学报》
CSCD
2003年第2期56-60,共5页
The Chinese Journal of Geological Hazard and Control
基金
国家自然科学基金资助项目(编号:49672166)
关键词
赋存环境
软弱夹层
抗剪强度
粘土矿物
强度参数
粘粒含量
稠度状态
weak intercalation
intercalated gouge
clay grain content
shearing strength parameter
consistancy state
