高速公路路堤边坡冲刷防护临界高度初探

Primary Research on Critical Height of Erosive Protection for Embankment of Freeways

目前高速公路边坡冲刷防护设计往往千篇一律 ,不论路堤高与低 ,一个统一模式 ,需要防护的地方未能很好地防护 ,而部分不需防护的地方都大量设计了防护工程。为此 ,本文结合江苏省高速公路建设的工程实际 ,采用试验观测与调研二者相结合的方法 ,分析了江苏地区降雨条件下 ,高速公路边坡坡长对坡面冲刷的影响及二者之间的关系 ,初步得出了江苏省高速公路路堤边坡冲刷防护的临界高度 ,这样可以划分不同防护类型适应的路堤高度。文中一些有益的数据和结论 ,可供今后高速公路边坡防护设计参考。

Either high or low embankment,design of erosive protection for freewayss always the same There is no protection design where it needs to be protected;whereas there are plenty of protections where it needs not to be protected So,by means of testing observation and investigating,the influence of the slope length on erosion of freeways' slope and their relation are analyzed under the rainfall condition in Jiangsu area,based on actual freeway projects in Jiangsu province The critical height of protection for freeway embankment is acquired by which different types of protection are measured off to fit different embankment height,with useful data and recommendations for freeway protection design.