江西沪昆高铁沿线主要气象灾害影响因子初探

Preliminary Study on Main Meteorological Disaster Influencing Factors along Shanghai-Kunming Highspeed Railway in Jiangxi Province

利用江西1961—2019年的逐日降雨、积雪、大风、大雾、雷暴(1961—2013年)等数据,以及沪昆高铁和普通铁路的灾害数据,分析了江西沪昆高铁沿线主要气象灾害的时空演变特征,确定沿线不同路段影响较大的灾种类别,研究了沪昆高铁沿线不同路段、不同类型灾害性天气的服务关键期,建立了江西沪昆高铁沿线主要气象灾害的风险评价指标体系,分析了暴雨、雷暴、积雪3种主要气象灾害的致灾影响因子危险指数。结果显示:暴雨和雷暴是对江西沪昆高铁影响最大、覆盖范围最广的2种灾害性天气。暴雨、雷暴、积雪3种灾害性天气影响因子的影响程度在江西沪昆高铁沿线不同路段略有差异。

Based on the daily rainfall,snow cover,strong wind,fog,thunderstorm(1961—2013)and disaster data of Shanghai-Kunming High speed Railway and ordinary railway in Jiangxi Province from 1961 to 2019,the spatial-temporal evolution characteristics of main meteorological disasters along the Shanghai-Kunming High speed Railway in Jiangxi Province were analyzed,the disaster types with greater impact on different sections along the line are determined,and the service critical periods of different sections and types of disastrous weather along the Shanghai-Kunming High speed Railway were studied,The risk assessment index system of main meteorological disasters along the Shanghai-Kunming High speed Railway in Jiangxi Province was established,and the risk index of three main meteorological disasters,namely rainstorm,thunderstorm and snow cover,was analyzed.The results showed that rainstorm and thunderstorm were the two disastrous weather that have the greatest impact and the widest coverage on the Shanghai-Kunming high-speed railway in Jiangxi Province.The influence degree of the three disastrous weather impact factors,rainstorm,thunderstorm and snow cover,was slightly different in different road sections along the Shanghai-Kunming High Speed Railway in Jiangxi Province.