城市地面沉降对给排水管道变形的影响--以天津市塘沽区响螺湾地区为例

Influence of urban land subsidence on deformation of water and sewer pipelines—A case study of the Xiangluowan area,Tanggu District,Tianjin Municipality,China

受地面沉降的影响,敷设在不同位置的给排水管道差异沉降明显。运用GEO-SLOPE软件中的SIGMA/W模块,对天津市塘沽区响螺湾地区敷设给排水管道的地面沉降特征进行数值模拟,分析给排水管道沉降破坏的机理,总结给排水管道的变形规律,指出响螺湾地区给排水管道的规划要点。通过层次分析法确定给排水管道的工程地质要素权重,综合评价给排水管道的分布,为给排水管道规划提供合理的工程地质依据,减少地面沉降引发的环境工程地质问题,指导响螺湾地区的总体规划。

Under the influence of land subsidence, water and sewer pipelines lying at various depths sink markedly differentially. Based on SIGMA/W modularization in the GEO-SLOPE software, land subsidence of water and sewer pipelines in the Xianghiowan area is simulated and the subsidence mechanism of water and sewer pipelines is analyzed. Additionally, based on the deformation features of water and sewer pipelines, the key points of planning of water and sewer pipelines in the Xiangluowan area are presented. In that case, analytical hierarchy progress is used to determine their weight of element factors of geology engineering. The distribution of water and sewer pipelines is evaluated comprehensively to provide rational engineering geological grounds for the plan of water and sewer pipdines, reduce the environmental engineering geological problems induced by land subsistence and guide the general planning of the Xiangluowan area.