城市地下空间内涝成因及污染风险预警研究

Research on Causes of Waterlogging and Pollution Risk Warning in Urban Underground Spaces

当地下空间内涝时,会使排水系统失效,废水难以顺利排除。这将导致污水在地下空间中滞留,引发废水中有机物、重金属、油脂和细菌的积累,对地下水质量和生态健康构成威胁。为此,提出了城市地下空间内涝成因及污染风险预警研究。构建区域排水模型来获得城市地下内涝模型,基于内涝模型对内涝成因展开分析,得到三个内涝成因作为评价指标,利用改进的物元可拓法对内涝污染风险等级展开评估,根据风险等级展开预警。实验结果表明,该方法的数据监测效果好、风险预警效率高,可以有效降低城市内涝污染现象发生频率。

When underground spaces become waterlogged,the drainage system becomes ineffective and wastewater is difficult to be discharged smoothly.This will lead to the retention of sewage in underground spaces,leading to the accumulation of organic matter,heavy metals,fats,and bacteria in the wastewater,posing a threat to groundwater quality and ecological health.Therefore,a study on the causes of waterlogging and pollution risk warning in urban underground spaces has been proposed.The paper constructs a regional drainage model to obtain an urban underground waterlogging model,analyzes the causes of waterlogging based on the waterlogging model to obtain three waterlogging causes as evaluation indicators.The improved matter element extension method is used to evaluate the risk level of waterlogging pollution and conduct early warning based on the risk level.The experimental results show that this method has good data monitoring effect and high risk warning efficiency,and can effectively reduce the frequency of urban waterlogging pollution.