影响高速公路交通的致灾大风危险性评价

发布时间：2019-01-22 10:03

【摘要】：利用全国2373个国家级地面气象观测站2005—2014年10 min平均风速以及2009—2014年1 h内极大风速资料,基于气象行业标准(QX/T 111—2010)中风力对高速公路交通运行影响的等级划分,选取频率与强度作为指标构建评价体系,结合熵权法计算致灾因子危险性综合指数,编制全国致灾大风危险性评价图。结果表明,对高速公路交通运行产生影响的致灾大风高危险区主要分布在内蒙古中西部、西藏北部和西部的局部地区以及新疆阿拉山口、达坂城、三十里风区与百里风区范围内;较高危险区主要分布在内蒙古中部和西部、甘肃西部、青海西部和南部、新疆西北部和东部以及东部沿海的部分地区;全国其他地区主要高速公路沿线的致灾大风危险性则相对较低。
[Abstract]:The data of average wind speed of 10 min from 2005 to 2014 and the maximum wind speed of 1 hour from 2009 to 2014 are used in 2373 national surface meteorological observatories in China. Based on the classification of the influence of wind force on highway traffic in the meteorological industry standard (QX/T 111-2010), the evaluation system is constructed by selecting frequency and intensity as indicators, and the comprehensive risk index of disaster factors is calculated with entropy weight method. To compile the national hazard assessment map of disaster-induced gale. The results show that the high risk areas of disasters and gales that affect the traffic operation of the expressway are mainly located in the central and western parts of Inner Mongolia, northern and western parts of Tibet, as well as in Alashan pass and Dabancheng, Xinjiang. 30 li wind area and 100 li wind area; The high risk areas are mainly distributed in central and western Inner Mongolia, western Gansu, western and southern Qinghai, northwest and eastern Xinjiang, and parts of the eastern coastal areas. Other areas of the country along the main highway disaster risk is relatively low.
【作者单位】：中国气象局公共气象服务中心;
【基金】：公益性行业(气象)科研专项(GYHY201406029)
【分类号】：P425.61;U492.8

【相似文献】