CAJ | 학술논문

针对南水北调中线工程镇平段中，存在膨胀土、基坑涌水、涌砂、基坑边坡稳定和围堰地基渗漏等工程地质问题，首先建立了三维有限元计算模型，数值分析了分层设置排水沟方案。计算结果表明，采用该方案排水，在基坑处形成降水漏斗，可有效地降低地下水位线，结合分层开挖的施工方法，可满足施工要求，对同类工程施工有一定借鉴意义。
침대남수북조중선공정진평단중，존재팽창토、기갱용수、용사、기갱변파은정화위언지기삼루등공정지질문제，수선건립료삼유유한원계산모형，수치분석료분층설치배수구방안。계산결과표명，채용해방안배수，재기갱처형성강수루두，가유효지강저지하수위선，결합분층개알적시공방법，가만족시공요구，대동류공정시공유일정차감의의。
For the middle route of North Water Transfer proj ect,many engineering geological problems may be encountered,such as expansive soil,pit water gushing,slope stability of bay sand pit and cofferdam foundation leakage.This paper presents a nu-merical analysis of the scheme of stratified drainage using a three-dimensional finite element model.The result shows that the stratified drainage can form a funnel in the pit of the precipitation and reduce the water level effectively.The scheme may fulfill the construction requirements when it is combined with layered excavation construction process.It may provide valuable refer-ences for similar projects.