我国城市路面塌陷事故统计分析

为探究路面塌陷事故发生的规律及内在因素，从事故发生时间分布、地域分布、致因类型等不同维度对2014~2018年的2322 起路面塌陷事故进行统计分析。结果表明，城市路面塌陷事故基本呈逐年递增趋势；在这5 年期间，7、8 月份事故发生起数最多，甘肃、河南、陕西、广东等省份为路面塌陷事故高发省份；管道渗漏是路面塌陷事故最主要的直接原因。运用聚类分析的方法，将各省市路面塌陷事故划分为五类，对各类特征进行研究分析。并对统计分析结果进行总结，提出防范路面塌陷事故的相应建议。

A Statistical Analysis of Urban Road Collapse Accidents in China

To explore the regularity and internal factors of road collapse accidents，a statistical analysis was performed on 2322road collapse accidents happened in China from 2014 to 2018 from different dimensions, including time distribution，geographicaldistribution，and cause types. The results showed that the number of road collapse accidents are basically increasing from a temporalperspective. Furthermore，during this five-year period，the number of accidents in July and August was the highest and Gansu，Henan，Shaanxi，Guangdong were the provinces with the highest incidence of road collapse accidents. In addition，pipeline leak wasthe main direct cause of road collapse accident. Then，a cluster analysis method was employed to divide the road collapse accidentsof each province into five categories and analyze characteristics of these five categories of accidents. Based on the statistical analysisresults，corresponding suggestions for preventing road collapse accidents are provided.