三維GIS的城市暴雨積澇災害模擬
發(fā)布時間:2018-11-07 14:13
【摘要】:針對傳統(tǒng)基于二維GIS進行城市暴雨積澇模擬分析不能立體地展現(xiàn)積澇災害動態(tài)演進過程、地物受災情況的問題,該文提出了基于三維GIS進行城市暴雨積澇災害模擬分析。該方法綜合應用精細化建模與地物拉伸建模技術,通過區(qū)域DEM構建、地表路面建模、建筑物建模、地形匹配構建研究區(qū)三維模型;以改進的D8算法進行匯水區(qū)劃分,應用徑流系數(shù)法進行匯水區(qū)產流計算。研究結果表明,該方法能夠有效實現(xiàn)三維場景中暴雨積澇積水深度、積水范圍計算以及積水深度、受災房屋、受災道路可視化表達,為城市暴雨積澇災害防災減災提供技術支撐。
[Abstract]:Aiming at the problem that the traditional simulation analysis of urban rainstorm accumulation and waterlogging based on 2D GIS can not show the dynamic evolution process of accumulated waterlogging disaster and the disaster situation of ground objects, this paper puts forward the simulation analysis of urban rainstorm flood disaster based on 3D GIS. The method synthetically applies fine modeling and ground object stretching modeling technology to construct 3D model of research area through area DEM construction, surface pavement modeling, building modeling and terrain matching. The improved D8 algorithm is used to divide the catchment area and the runoff coefficient method is used to calculate the runoff yield in the catchment area. The research results show that the method can effectively realize the depth of accumulated waterlogging, the calculation of water accumulation range, the depth of water accumulation, the affected house and the affected road in 3D scene. To provide technical support for urban rainstorm accumulation and waterlogging disaster prevention and mitigation.
【作者單位】: 南京信息工程大學地理與遙感學院;南京信息工程大學氣象災害省部共建教育部重點實驗室;
【基金】:江蘇省自然科學基金項目(BK20151458) 江蘇省博士后科研基金項目(1101024B) 中國氣象局北京城市氣象研究城市氣象科學研究基金項目(IUMKY&UMRF201103)
【分類號】:P208;P426.616
本文編號:2316611
[Abstract]:Aiming at the problem that the traditional simulation analysis of urban rainstorm accumulation and waterlogging based on 2D GIS can not show the dynamic evolution process of accumulated waterlogging disaster and the disaster situation of ground objects, this paper puts forward the simulation analysis of urban rainstorm flood disaster based on 3D GIS. The method synthetically applies fine modeling and ground object stretching modeling technology to construct 3D model of research area through area DEM construction, surface pavement modeling, building modeling and terrain matching. The improved D8 algorithm is used to divide the catchment area and the runoff coefficient method is used to calculate the runoff yield in the catchment area. The research results show that the method can effectively realize the depth of accumulated waterlogging, the calculation of water accumulation range, the depth of water accumulation, the affected house and the affected road in 3D scene. To provide technical support for urban rainstorm accumulation and waterlogging disaster prevention and mitigation.
【作者單位】: 南京信息工程大學地理與遙感學院;南京信息工程大學氣象災害省部共建教育部重點實驗室;
【基金】:江蘇省自然科學基金項目(BK20151458) 江蘇省博士后科研基金項目(1101024B) 中國氣象局北京城市氣象研究城市氣象科學研究基金項目(IUMKY&UMRF201103)
【分類號】:P208;P426.616
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