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| 影响中国高速铁路运行的暴雨危险性特征研究 | |
| 引用本文： | 李莹,高歌,程驰.影响中国高速铁路运行的暴雨危险性特征研究[J].地理科学,2021,41(10):1843-1851. |
| 作者姓名： | 李莹 高歌 程驰 |
| 作者单位： | 1.中国气象局国家气候中心暨气候研究开放实验室，北京 100081 2.南京信息工程大学气象灾害预报预警与评估协同创新中心，江苏 南京 210044 3.中国铁道科学研究院集团有限公司，北京 100081 |
| 基金项目： | 中国国家铁路集团有限公司科技研究开发计划系统性重大项目(P2019T001);国家重点研发项目(2019YFC1510205) |
| 摘 要： | 利用国家级地面气象站逐时降水数据，对影响中国高速铁路运行的暴雨危险性进行了分析。影响高铁运行的暴雨主要发生在中国中东部大部以及东北中部，该区域与高速铁路网高度重叠，高铁运行的暴雨风险加大。不利运行的暴雨5~10月多年平均发生小时数分布总体由南向北向西递减，华南地区普遍有5 h，东南沿海和海南地区超过10 h。不利运行的暴雨7月最多，峰值月份空间变化与中国雨带进程基本一致，个别月份还受到台风影响。不利运行的暴雨多发于清晨和傍晚，以17时最多，以14~21时分布范围最广，主要集中在华南、江南、华北大部、东北大部以及海南、四川西部等地。历史最长连续不利运行暴雨以3 h出现的范围最广，广东西南部、广西南部和海南等地最长连续不利运行在6 h以上。中国中东部大部地区为暴雨中危险等级易发区；华北东部以及秦岭?黄河下游以南的大部分地区为较高危险等级易发区；广东西部、广西、海南以及东南部沿海部分地区则为高危险等级易发区。 |
| 关 键 词： | 暴雨 高速铁路 高铁运行危险 |
| 收稿时间： | 2020-08-17 |
| 修稿时间： | 2020-12-08 |
Hazard Intensity of Rainstorm Affecting High-speed Railway Operation in China |
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| Li Ying,Gao Ge,Cheng Chi.Hazard Intensity of Rainstorm Affecting High-speed Railway Operation in China[J].Scientia Geographica Sinica,2021,41(10):1843-1851. | |
| Authors: | Li Ying Gao Ge Cheng Chi |
| Institution: | 1. Laboratory for Climate Studies, National Climate Center, China Meteorological Adminstration, Beijing 100081, China 2. Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science and Technology, Nanjing 210044, Jiangsu, China 3. China Academy of Railway Sciences Corporation Limited, Beijing 100081, China |
| Abstract: | Using the hourly national rain-gauge datasets over China, based on the weather conditions affecting the operation of high-speed railway, the risk of rainstorm to the operation of high-speed railway in China (excluding data of Hong Kong, Macao and Taiwan) is analyzed. Rainstorms that have adversely affected high-speed rail operations occur over a wide range of areas over China concentrating in the central and eastern China and the northeastern China, which highly overlaps the current high-speed railway network, thus leads to a high risk to its operation. From May to October, the average frequency of rainstorm which has negative impact on the high-speed railway gradually decreases from south to north or to west. It occurs frequently in South China, with 5 hours in each year in general and more than 10 hours in each year in southeast coastal and Hainan areas. The unfavorable operating conditions mainly occur in July, and the influencing domain of unfavorable weather conditions for high-speed railway operation is consistent with the prevailing movement of rain belt in China as well as the typhoon activity. In terms of diurnal variation, rainstorms with negative impacts on high-speed railway are frequent in the early morning and early evening, with the peak value at 17:00 and the widest distribution range from 14:00 to 21:00, which mainly concentrates in South China, most parts of Jiangnan, northeastern China, North China, Hainan and the western Sichuan. The unfavorable operation conditions of continuous rainstorm are common in the eastern part of China. The longest continuous adverse rainfall in history appears in the most extensive range with 3 hours. The longest continuous adverse rainfall duration is more than 6 hours in southwest Guangdong, south Guangxi and Hainan. The central and eastern parts of China are prone to medium risk in rainstorms. The eastern part of North China and most areas south of the Qinling Mountains and the lower reaches of the Yellow River are relatively high risk prone areas. Western Guangdong, Guangxi, Hainan and parts of the southeast coastal areas are high risk prone areas. |
| Keywords: | rainstorm high-speed railway hazard of railway operation |
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