淮安市汪木排河河道治理工程方案比选及河坡稳定分析

Scheme comparison of river regulation and river slope stability of Wangmupai River in Huai’an City

淮安市汪木排河河道治理工程是改善水生态、提升水环境、提高沿线居民生活水平的迫切需要。现对河道工程设计中疏浚方案和护坡方案进行对比分析,择取最优的施工方案,并运用瑞典圆弧法对各段河坡做了稳定性计算。结果表明:疏浚方案采用“局部河段向下扩挖,其余河段适当扩挖法”可有效减少施工矛盾;护砌方案采用“联锁式混凝土护坡方案”,并在常水位上下分别选用“实心式”和“植草式”混凝土护坡能实现利益最大化;稳定性计算结果显示在各工况下,断面河坡稳定性均满足规范要求。

The river regulation project of Wangmupai River in Huai’an City is an urgent need to improve water ecology,improve water environment and improve the living standards of residents along the line.Now,the dredging scheme and slope protection scheme in the river engineering design are compared and analyzed,the optimal construction scheme is selected,and the stability of each section of river slope is calculated by using Swedish arc method.The results show that the dredging scheme can effectively reduce the construction contradiction by adopting the method of"expanding excavation downward in some river sections and appropriate expanding excavation in other river sections".The"interlocking concrete slope protection scheme"is adopted as the protection scheme,and the"solid"and"grass planting"concrete slope protection are selected above and below the normal water level to maximize the benefits.The stability calculation results show that the stability of cross-section river slope meets the specification requirements under various working conditions.