| 考虑非饱和土基质吸力作用的土石坝渗流分析 |
| |
| 引用本文： | 祁德庆,刘印,徐连民,赖小玲.考虑非饱和土基质吸力作用的土石坝渗流分析[J].上海力学,2008,29(4). |
| |
| 作者姓名： | 祁德庆 刘印 徐连民 赖小玲 |
| |
| 作者单位： | [1]同济大学建筑工程系,上海200092 [2]三峡大学土木水电学院,宜昌443002 |
| |
| 摘 要： | 传统的渗流分析主要考虑饱和区而忽略非饱和区内的渗流，本文首先对影响非饱和土渗流特性的重要物理量基质吸力进行了分析，阐述了其形成机理并推出其理论计算公式，然后在考虑基质吸力的作用下，基于饱和．非饱和渗流计算原理，采用有限元法考虑了渗流场非饱和区的影响，并以各向同性均质坝和心墙土石坝为算例，进行了计算分析。算例表明，由于基质吸力产生的虹吸作用，使得浸润线上部的非饱和区内也存在着连续的水流，否定了传统分析中浸润线是最上部流线的假设，通过分析这种水流的特点，定性的得出其对土石坝渗流稳定性的影响，对土石坝渗流分析具有一定的指导意义。
|
| 关 键 词： | 非饱和区 渗流 浸润线 基质吸力 |
Seepage Analysis of Earth Rock Dam Considering Matric Suction of Unsaturated Soils |
| |
| QI De-qing,LIU Yin,XU Lian-min,LAI Xiao-ling.Seepage Analysis of Earth Rock Dam Considering Matric Suction of Unsaturated Soils[J].Chinese Quarterly Mechanics,2008,29(4). |
| |
| Authors: | QI De-qing LIU Yin XU Lian-min LAI Xiao-ling |
| |
| Institution: | 1.Department of Building Engineering;Tongji University;Shanghai 200092;China;2.College of Civil & Hydroelectric Engineering;Three Gorges University;Yichang 443002;China |
| |
| Abstract: | Traditional seepage analysis mainly focuses on the seepage of saturated areas without considering that of unsaturated areas.The matric suction,which has an significant effect on the seepage characteristics of unsaturated soil,was analyzed through discussing its formation mechanism and theoretical calculation formula.Considering matric suction and based on the theory of saturated unsaturated soil seepage,the influence of unsaturated seepage was took into account,and the seepage finite element calculation and... |
| |
| Keywords: | unsaturated zone seepage saturation line matric suction |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
