长江南京段涉河工程路堤结合设计

Road-levee combined design in wading projects in Nanjing section of the Yangtze River

为保证涉河路堤的承载与防洪能力,以长江南京段龙潭综合保障基地路堤结合工程为例,分析了该工程的水文气象、工程地质、水位等建设条件,研究了路堤结合段的堤顶高程、道路宽度、路面结构及路基处理方案,并对设计洪水位骤降及稳定渗流2种工况进行了堤防稳定核算。计算结果表明:2种工况下的设计堤防稳定安全系数均大于规范容许值,该路堤结合设计方案可行。研究成果可为类似工程提供参考。

In order to ensure the bearing and flood protection capacity of wading levee, taking the road-levee combination project of Longtan comprehensive support base in Nanjing section of the Yangtze River as an example, the engineering construction conditions, such as hydrometeor, engineering geology, water level, were analyzed.The levee top elevation, road width, pavement structure and subgrade treatment scheme were studied, and the levee stabilities in both design flood level plunge and steady seepage conditions were calculated.Calculation results showed that the safety factors of designed levee in both conditions were higher than allowed values, and this road-levee combined design was feasible.The results can be a reference for similar projects.