超固结粘性土变形特征及可持续开采水位降的室内试验确定方法  

Laboratory tests for determination of deformation characteristics of overconsolidated clayey soils and sustainable exploitation groundwater level

作　　者：王秀艳[1] 刘长礼[2] 张云[2] 

机构地区：[1]同济大学土木工程学院,上海200092 [2]中国地质科学院水文地质环境地质研究所,河北石家庄050061

出　　处：《岩土力学》2006年第6期875-879,共5页Rock and Soil Mechanics

基　　金：国家自然科学基金项目项目(No.40472139)资助

摘　　要：通过对海口市深层地下水开采漏斗附近区超固结粘性土大量的物理力学性质等试验研究,认为饱和超固结粘性土在附加应力作用下同样会产生释水变形并存在一定规律;根据室内压缩曲线变形规律可以确定深层地下水的可持续开采水位降。研究成果对科学开采深层地下水、预防与治理地面沉降及相关灾害具重要指导意义。Based on test of physio-mechanical properties of the overconsolidated soils near the depression cone of groundwater in Haikou City of Hainan Province, it is found that the seepage and deformation of the saturated overconsolidated clayey soils can take place under the additional stress. The lab test results show that the sustainable exploitation groundwater level can be determined by the deformation characteristics of the compressive curves. The research achievements are of great significance for the reasonable exploitation of groundwater and for the control and prevention of the land subsidence and relevant geological hazards.

关 键 词：超固结粘性土 地面沉降 释水变形 有效应力 可持续开采水位 

分 类 号：TU411[建筑科学—岩土工程]