【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。更多还原

【Abstract】 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.更多还原