滑带黄土孔隙微结构参数与动应力关系研究  

Relationships Between Porosity Micro-structure Parameters of Slide-zone Soil and Dynamic Stress

作　　者：任权[1,2] 王家鼎[1] 谷天峰[1] 蔡同俊 

机构地区：[1]西北大学地质学系/大陆动力学国家重点实验室,陕西西安710069 [2]陕西省交通规划设计研究院公路勘察设计院,陕西西安710068

出　　处：《水土保持通报》2013年第1期103-105,共3页Bulletin of Soil and Water Conservation

基　　金：国家自然科学基金项目"车辆长持时振动荷载作用下黄土滑坡机理研究"(40572157)

摘　　要：以黄土滑坡滑带土孔隙微观结构为研究对象,并辅以定量化分析手段,研究不同试验条件下黄土滑坡滑带土微观结构的变化特征与动应力之间的关系。研究表明,滑带黄土的微观结构参数随着动荷载的增加呈现一定的规律性,其中孔隙数量、孔隙面积、孔隙形态比以及孔隙分形维数与动应力之间的关系可以用线性回归方程表示。By taking the porosity micro-structure of slide-zone soil as an research object and employing quanti- tative analysis method, relationships between the variable characteristics of micro-structure of loess slide- zone soil and dynamic stress are studied under different experimental conditions. Results from the study show that the porosity micro structure parameters of the loess soil present a certain regularity under increased consolidation stress, and there are linear relationships between the porosity micro-structure param- eters （i. e. , pore quantity, proportion, form ratio, average diameter and fractal dimension） and dynamic stress.

关 键 词：黄土滑坡 滑带土 微观结构 动应力 

分 类 号：P642.3[天文地球—工程地质学]