摘要
城市内涝对城市基础设施造成极大损害且危及市民人身财产安全,需要通过科学评估手段对城市内涝进行风险评估,是防灾减灾工作中的重要一环。以SWMM模拟四种不同设计雨情下广州市南浦岛内的积水状况,利用ArcGIS进行数据分析、功能优化及专题图制作,分析致灾因子和受灾区域性质,结合相关规范建立风险评估体系,通过分析危险性和敏感性对南浦岛主排水管网设计工程的风险评估。利用插值分析得到与实际地形地貌相吻合的灾害风险等级分布图,为防灾减灾提供了决策依据。
Urban waterlogging frequently broke out in many cities,undermining the infrastructure and threatening citizen life.As a result,scientific assessmentmethod of floods played a significant role in predicting and relieving waterlogging. The model under different raining conditions was established by SWMM with assistance of Arc GIS,like data analysis,improving function,thematic cartography,etc. The assessment system was based on two aspects,leading factors and acceptor. Risk distributions of different raining conditions are used to provide designing optimization and decision strategy.
出处
《环境科学与管理》
CAS
2016年第12期178-182,共5页
Environmental Science and Management
