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首页> 外文期刊>Physics and chemistry of the earth >Urban flood simulation and prioritization of critical urban sub-catchments using SWMM model and PROMETHEE II approach
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Urban flood simulation and prioritization of critical urban sub-catchments using SWMM model and PROMETHEE II approach

机译：SWMM模型与临时城市小集水区的城市洪水仿真与临界城市集水区的优先级和Promethee II方法

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Urban runoff increased due to augment of impervious surfaces. In order to flood mitigation during rainy season, determination of critical urban sub-catchments is very important for urban planners. Due to lack of information, adopting a simulation approach is one of the practical ways to identify the surcharged junctions and critical sub-catchments. Occurrence of destructive floods in the rainy seasons indicates the inappropriateness of the urban drainage system in Urmia. The main aims of this study were to estimate the surface runoff of urban sub-catchments using SWMM, to evaluate the accuracy of the drainage system of the study urban area and to prioritize sub-catchments using PROMETHEE II approach and SWMM. In the present study, the occurrence of rainfall event of the Urmia city (West Azerbaijan province, Iran) used for estimation of runoff depth. The study area was divided into 22 sub-catchments. For calibration and validation of model parameters, 3 rainfall events and their related runoff were measured. According to sensitivity analysis CN was the most sensitive parameter for model calibration. Amount of surcharged conduits and junctions indicates that the drainage system of the study area has not enough capacity for converting of the runoff and. For 10 year return period, depth of channels should increase by 20% for prevention of flooding in these sub-catchments. Sub-catchments were prioritized using PROMETHEE II approach and its results were compared with SWMM simulation outcomes. Based on SWMM simulation, S11, S7, S18, S16 and S1 sub-catchments are more critical sub-catchments respectively, while according to PROMETHEE method, S1, S11, S16, S14 and S18 are determined as the critical areas.
机译：由于增强不透水表面，城市径流增加。为了在雨季减缓淹没，关键城市集水区的确定对城市规划者来说非常重要。由于信息缺乏，采用模拟方法是识别附加接收结和临界子集水区的实际方法之一。雨季发生破坏性洪水的发生表明了荨麻疹城市排水系统的不恰当性。本研究的主要目的是使用SWMM估计城市子集水区的表面径流，以评估研究城市地区的排水系统的准确性，并使用普通丙烯II方法和SWMM优先考虑子流域。在本研究中，乌利亚市（西阿塞拜疆省，伊朗）的降雨事件的发生用于估算径流深度。研究区分为22个子集。对于模型参数的校准和验证，测量了3个降雨事件及其相关径流。根据敏感性分析，CN是模型校准最敏感的参数。附加的导管和连接量表示研究区域的排水系统没有足够的能力来转换径流和。 10年回报期，预防这些子集水区内的渠道深度应增加20％。使用普通丙烯II方法优先考虑子流域，并将其结果与SWMM模拟结果进行了比较。基于SWMM仿真，S11，S7，S18，S16和S1子集节奏分别是更关键的子集集，而根据丙比方法，S1，S11，S16，S14和S18被确定为关键区域。

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