摘要
山洪是汛期多发地质灾害之一。受地形和气候的影响,西南地区高速公路沿线易受山洪威胁。为了更好地防范山洪灾害,保障交通安全,基于SCS模型推导了流域产生径流的临界雨量模型。以四川省高速公路沿线小流域为研究区,利用土地利用类型数据、土壤属性数据及降水数据等资料,计算得到了四川省高速公路沿线小流域发生山洪灾害的临界雨量。计算结果显示,四川省高速公路沿线流域的临界雨量在14—26 mm之间。与山洪灾害历史数据对比结果表明,模型预测效果良好。
Mountain torrents are one of the frequent geological disasters in flood season.Affected by the terrain and climate,the expressway in Southwest China is vulnerable to mountain torrents.In order to better prevent mountain torrents and ensure traffic safety,a critical rainfall model is derived based on SCS model.Taking the small watershed along the expressway in Sichuan province as the research area,using the data of land use type,soil attribute data and precipitation data,the critical rainfall of mountain torrents in the small watershed along the expressway in Sichuan province is calculated.The calculation results show that the critical rainfall of the watershed along the expressway in Sichuan province is between 14-26mm.Compared with the historical data of mountain flood disaster,the results show that the prediction effect of the model is good.
作者
褚永彬
杨国彬
杨泓
宋扬
CHU Yongbin;YANG Guobin;YANG Hong;SONG Yang(College of Resources and Environment,Chengdu University of Information Technology,Chengdu 610225,China;First Engineering Co.,Ltd.,China National Chemical Communications Construction Group Co.,Ltd.,Chengdu 610094,China;Sichuan Meteorological Service Center,Chengdu 610072,China;Sichuan Road Network Monitoring and Emergency Response Center,Chengdu 610041,China)
出处
《测绘与空间地理信息》
2023年第10期7-9,共3页
Geomatics & Spatial Information Technology
基金
四川省科技计划重点研发项目(2020YFG0144)资助。
关键词
山洪
临界雨量
SCS模型
高速公路
mountain torrents
critical rainfall
SCS model
expressway
