摘要
研究了汶川地震灾区泥石流损害线路工程的典型事件,归纳出泥石流对线路工程有4种危害模式:掩埋和淤积、冲刷、冲击、堵塞主河。基于泥石流堵塞主河对线路工程造成的危害最为严重的现象,提出了以"最大限度利用主河输移和容纳泥沙的能力"为指导的防灾对策;基于主河水位壅高值计算式和泥石流堵河异岸受灾判据,给出了主河最大容纳泥沙量的确定方法。
The typical damage events of highways along rivers caused by debris flow in Wenchuan earthquake areas were studied. Four disaster models of highways along rivers caused by debris flow were concluded, deposit, erosion, impact and damming-river. According to the phenomenon that the most serious damage to highways along rivers was caused by demming- river by debris flow, the disaster prevention mode of making greatest use of the maximum capacity of carrying sediment of the main river was proposed. Based on the calculation equation of head-water level and criteria of disaster at the opposite river bank caused by debris flow river-blocked, the method of determining the maximum capacity of carrying sediment of main riv- er was then presented.
出处
《重庆交通大学学报（自然科学版）》
CAS
北大核心
2014年第2期81-85,共5页
Journal of Chongqing Jiaotong University(Natural Science)
基金
国家"973"计划资助项目(2011CB409902)
中国铁路总公司科技研究开发计划重点项目(2013G014-A)
关键词
环境工程
泥石流
震后灾区
线路工程
危害模式
防灾模式
environmental engineering
debris flow
areas after the earthquake
highway engineering
disaster model
dis-aster prevention model
