中南大学学报（自然科学版）2012，Vol.43Issue(7)：2782-2788,7.
降雨条件下厚覆盖层边坡的渗流特性
Seepage characteristics of thick coating slope in raining condition
摘要
Abstract
On the basis of in-situ rainfall information and saturation-unsaturation seepage theory, the pore water pressure and volumetric water content and transient saturated zone variation of the specific slope within the condition of designed rainfall were researched spatially and timely. The results show that the pore water pressure of slope on the surface within a certain depth increases at rainfall, and decreases when the rainfall is over. The volumetric water content of slope surface increases to saturated water content with the increase of rainfall, and is kept when the rainfall is over, and it begins to decrease along the slope surface. The formation of transient saturated zone occurs when the soil of slope surface is saturated and the saturated zones are connected, but it comes after the increase of pore water pressure and volumetric water content The transient saturated zone occurs first at the slope foot and stages, then at the back of slope surface. The dissipation of transient saturated zone is the opposite.关键词
厚覆盖层边坡/孔隙水压力/体积含水率/暂态饱和区Key words
thick coating slope/pore water pressure/volumetric water content/transient saturated area分类
建筑与水利引用本文复制引用
蒋中明,曾铃,付宏渊,何忠明..降雨条件下厚覆盖层边坡的渗流特性[J].中南大学学报（自然科学版）,2012,43(7):2782-2788,7.基金项目
国家自然科学基金资助项目(51078042) （51078042）
湖南省交通科技计划项目(2009003) （2009003）
