晋西黄土丘陵沟壑区山区道路冲刷及防治研究

Flushing of Roads in the Gullied Hilly Loess Region in West Shanxi and Countermeasures

在晋西黄土丘陵沟壑区,山区道路产流产沙是流域产流产沙的重要组成部分,道路往往成为径流泥沙输移的通道之一.据观测,山区道路的冲刷量是随着路面水流流线长度的增加而增大的,故其防治应从缩短水流流线等方面入手.采取道路路边排水渠与早井相结合、道路设横隔,可有效地防治路面冲刷,达到保护山区道路之目的.

In the gullied hilly loess region in west Shanxi Province, runoff and sediment formed on roads constitute a major part of runoff and sediment in a watershed, and roads often become a channel for transporting runoff and sediment. It is observed that the amount of flashing increases with the length of water route on road, consequently to reduce the amount of flushing the length of water route should be shortened. In addition, to reduce flushing and protect roads, water drainage channels and dry wells should be built.