心墙土料不同掺砾量性能研究  

Study on the Properties of Clay Core Material Blended with Different Quantity of Gravel Admixture

作　　者：周雯芳[1] 胡春凤[1] 沈蓉[1] 

机构地区：[1]中国水电顾问集团昆明勘测设计研究院,云南昆明650033

出　　处：《云南水力发电》2013年第5期16-20,共5页Yunnan Water Power

摘　　要：以某水电站开展的不同掺砾量心墙土料的物理力学性能研究为背景,深入探讨心墙土料在不同掺砾量的各项性能及相关性研究;随着掺砾量的增加,最大干密度增加,最优含水率降低,渗透系数增加(防渗性能降低),破坏坡降降低、压缩模量增大,力学性能提高。骨架形成点是心墙土料物理力学性能变化的显著判别点,可采取博弈原理对最佳的心墙土料进行判别确定,选取最佳掺砾量的心墙土料。Based on the study of the physical and mechanical properties of clay core materxal mlxea wlm aH- ferent quantity of gravels, which was made for construction of a certain hydropower project, further dis- cussion was made on all the properties of clay core material with different quantity of gravel admixture and on their correlation. With increase of the quantity of gravel admixture, the maximum bulk density increa- ses, the optimum percent moisture content decreases, the permeability coefficient increases（ Seepage con- trol capability reduces）, the critical hydraulic gradient decreases, the module of compressibility increases and the mechanical properties improve. The skeleton formation is essential to discriminate change of the physical and mechanical properties of the clay core material. The game theory can be applied to discrimina- tion of the best clay core material and further to selection of the clay core material with the best quantity of gravel admixture.

关 键 词：心墙土料 掺砾量 防渗性能 最优含水率 

分 类 号：TV443[水利工程—水工结构工程] TU521[建筑科学—建筑技术科学]