高填方渠道沉降影响因素敏感性分析  

Sensitivity analysis of influential factors on settlement of high-filled canal

作　　者：郑绍羽[1] 邹勇[1] 李亚东[1] 张治军 

机构地区：[1]武汉大学土木建筑工程学院,湖北武汉430072 [2]长江勘测规划设计研究有限责任公司,湖北武汉430010

出　　处：《人民长江》2015年第3期21-23,共3页Yangtze River

基　　金："十二五"国家科技支撑计划项目(2011BAB10B06)

摘　　要：渠堤的沉降变形是高填方渠道的致命灾害之一,易导致堤身开裂进而产生渗漏。基于摩尔库伦准则,利用FLAC3D构建了渠堤模型,模拟分析了填筑高度、土体抗剪强度、容重及压缩模量变化对渠堤最大沉降量的影响。分析结果表明,降低填料容重和增大土体压缩模量可有效减小沉降。实际工程中,应综合考虑整个工程的经济效益来选择适当的施工填筑参数。The settlement deformation is one of the worst fatal disasters of high- filled canal,which can lead to dam body cracking,and then caused leakage. On the basis of Mohr- Coulomb criterion,a canal bank model was established by FLAC3 D,which can be used to calculate the influence of filling height,soil shear strength,bulk density and elastic modulus on the maximum settlement quantity. The analysis results indicate that reducing the bulk density of packing materials and increasing the soil elastic modulus can effectively decrease the settlement. After the comprehensive consideration of economic benefits of the whole project,the appropriate filling construction parameters can be selected.

关 键 词：高填方渠道 沉降变形 敏感性分析 填筑施工 

分 类 号：TV67[水利工程—水利水电工程]