CAJ | 학술논문

在南水北调中线工程膨胀土地区，挖方渠道边坡设计一般要求采用一定掺量、一定厚度的水泥改性土换填进行保护。对膨胀土边坡进行水泥改性土换填时，常常会遇到作业面换填工作中止、边坡土体风化干裂、换填层冲刷破坏及地下水导排不畅等问题。若对上述问题处理不当，有可能对边坡换填质量产生影响，较严重时可能引起渠坡发生变形破坏危及渠道安全。针对水泥改性土作业面在施工中存在的问题进行了深入分析研究，提出了相应的工程处理措施，并总结出施工过程的要点，对今后的膨胀土工程建设具有一定的指导意义。
재남수북조중선공정팽창토지구，알방거도변파설계일반요구채용일정참량、일정후도적수니개성토환전진행보호。대팽창토변파진행수니개성토환전시，상상회우도작업면환전공작중지、변파토체풍화간렬、환전층충쇄파배급지하수도배불창등문제。약대상술문제처리불당，유가능대변파환전질양산생영향，교엄중시가능인기거파발생변형파배위급거도안전。침대수니개성토작업면재시공중존재적문제진행료심입분석연구，제출료상응적공정처리조시，병총결출시공과정적요점，대금후적팽창토공정건설구유일정적지도의의。
In the expansive soil region of the middle route of south-to-north water transfer project,cement modified soil with certain content and thickness is required to replace expansive soil in order to protect the canal slope.In the process of soil exchanging and filling,problems are often encountered,including suspension of exchanging-fill-ing operation,weathering and cracking of slope soil,scour damage of filled layer and mal-draining of groundwater. If the above problems are mishandled,the quality of soil exchanging and filling will be affected,and may even cause the slope deformation failure.In this paper,these problems are analysed in depth,and corresponding engi-neering treatment measures are put forward,and crucial points of the construction process are also given.It is of guiding significance for the engineering construction of expansive soil.