三維GIS的城市暴雨積澇災(zāi)害模擬
發(fā)布時(shí)間:2018-11-07 14:13
【摘要】:針對(duì)傳統(tǒng)基于二維GIS進(jìn)行城市暴雨積澇模擬分析不能立體地展現(xiàn)積澇災(zāi)害動(dòng)態(tài)演進(jìn)過程、地物受災(zāi)情況的問題,該文提出了基于三維GIS進(jìn)行城市暴雨積澇災(zāi)害模擬分析。該方法綜合應(yīng)用精細(xì)化建模與地物拉伸建模技術(shù),通過區(qū)域DEM構(gòu)建、地表路面建模、建筑物建模、地形匹配構(gòu)建研究區(qū)三維模型;以改進(jìn)的D8算法進(jìn)行匯水區(qū)劃分,應(yīng)用徑流系數(shù)法進(jìn)行匯水區(qū)產(chǎn)流計(jì)算。研究結(jié)果表明,該方法能夠有效實(shí)現(xiàn)三維場景中暴雨積澇積水深度、積水范圍計(jì)算以及積水深度、受災(zāi)房屋、受災(zāi)道路可視化表達(dá),為城市暴雨積澇災(zāi)害防災(zāi)減災(zāi)提供技術(shù)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(xué)地理與遙感學(xué)院;南京信息工程大學(xué)氣象災(zāi)害省部共建教育部重點(diǎn)實(shí)驗(yàn)室;
【基金】:江蘇省自然科學(xué)基金項(xiàng)目(BK20151458) 江蘇省博士后科研基金項(xiàng)目(1101024B) 中國氣象局北京城市氣象研究城市氣象科學(xué)研究基金項(xiàng)目(IUMKY&UMRF201103)
【分類號(hào)】:P208;P426.616
本文編號(hào):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(xué)地理與遙感學(xué)院;南京信息工程大學(xué)氣象災(zāi)害省部共建教育部重點(diǎn)實(shí)驗(yàn)室;
【基金】:江蘇省自然科學(xué)基金項(xiàng)目(BK20151458) 江蘇省博士后科研基金項(xiàng)目(1101024B) 中國氣象局北京城市氣象研究城市氣象科學(xué)研究基金項(xiàng)目(IUMKY&UMRF201103)
【分類號(hào)】:P208;P426.616
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