地下水位波动带内滨海软土性状研究进展  

Research progress review of characters of marine soft clay in underground water fluctuating zone

作　　者：孟庆山[1] 陈能远[1] 杨超[1] 

机构地区：[1]中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室,湖北武汉430071

出　　处：《人民长江》2011年第4期29-32,共4页Yangtze River

基　　金：国家自然科学基金青年项目(40902092);国家自然科学基金重点项目(50639010);中国科学院武汉岩土力学研究所知识创新工程领域前沿项目(O071204Q01)

摘　　要：针对沿海城市地下水位波动带内的软土在饱和与非饱和状态之间交替转化的特点,通过分析国内外有关地下水位波动引发地面沉降以及地面沉降间接造成相对海平面上升等的研究现状,提出:探讨地下水位波动及工程施工荷载作用下非饱和软土的变形强度规律,揭示软土中孔隙水在减饱和-增饱和反复过程中的激变、转化和迁移机制,以及建立反映地下水渗流与荷载变化的非饱和软土固结沉降理论计算方法,是今后研究工作的发展方向,并提供了可行的技术研究思路与方法。Aiming at the characteristics of soft clay in underground water fluctuating zone of coastal cities,which is usually in a transformation process between saturation and unsaturation states,through analyzing the research progress of ground subsidence induced by water fluctuation and the subsequent relative sea level rise caused by ground subsidence,we present several future research directions,including discussion on the laws of deformation and strength of soft clay under coupling loading of water fluctuation and construction;investigation on the mechanisms of deformation,transference and transformation of pore water in soft clay in a recurrent process of saturation-unsaturation;establishment of a computational method for consolidation settlement of unsaturated soft clay,which can reflect the effects of underground seepage and load variation.

关 键 词：非饱和软土 地下水位波动 地面沉降 微观结构 渗流 

分 类 号：TV223[水利工程—水工结构工程]