基于ArcGIS的圩区设计内涝水位计算
Calculation of Design Waterlogging Level in Polder Area Based on ArcGIS
朱丽丽 1杨勇 1张钟鸣1
作者信息
- 1. 南京市水利规划设计院股份有限公司,江苏南京 210000
- 折叠
摘要
南京作为中国东部地区重要的中心城市,市域内地铁线路发达,长江两岸圩区内站点分布尤其密集.圩区内涝水位是影响地铁站点布置、设计及施工的重要因子.以南京地铁站点所在某圩区为例,将实测地形高程数据导入ArcGIS进行三角网格差分处理,生成圩区的水位-调蓄量关系,再通过水文方法计算的内涝水量查询水位-调蓄量关系,得出地铁设计标准下圩区内涝水位.结果表明,该方法能够真实反映圩区地形特征,为内涝水位计算提供良好的数据基础,快速计算出水位-蓄水量关系,避免手工绘制等高线推荐内涝水位带来的计算误差,提高了内涝水位计算的精度和效率,能够为今后类似工作提供参考.
Abstract
As an important central city in the eastern region of China,the subway lines are well developed in Nanjing,especially with densely distributed stations in the polder areas on both sides of the Yangtze River.The waterlogging level in the polder area is an important factor affecting the layout,design and construction of subway stations.Taking a polder area where the Nanjing subway station is located as an example,the measured terrain elevation data is imported into ArcMap for triangular grid differential processing to generate the relationship between water level and storage volume in the polder area.Through the investigation of the relationship between water level and storage capacity of the waterlogging quantity calculated by hydrologic method,the waterlogging water level in the polder area under the subway design standard is obtained.The result shows that this method can really reflect the terrain features in polder areas,which provides a good data base for calculation of waterlogging level.The relationship between the water level and water storage is rapidly calculated to avoid the calculation error of waterlogging level recommended by manual drawing contour line.The accuracy and efficiency of calculating the waterlogging level are improved,which can provide the reference for similar work in the future.
关键词
圩区/内涝水位/地铁/ArcGISKey words
polder area/waterlogging level/subway/ArcGIS引用本文复制引用
出版年
2024
NETL
NSTL
万方数据