控制泥石流沟谷水土流失的防治工程对策

泥石流是水土流失的一种特殊形式,属最严重的水土流失类型.泥石流沟谷强烈侵蚀,致使区域生态环境逐步恶化,水土流失严重.坡面泻流、重力侵蚀和水力侵蚀是泥石流沟谷水土流失的三种基本类型;泥石流形成条件是影响流域水土流失严重程度的重要因素.应用防治工程控制泥石流沟谷的水土流失其工程效果显著.我国甘肃省武山县红峪沟及云南、四川等地泥石流防治工程实践证明,应用生物、防治工程等措施对策,可有效地减缓泥石流沟谷的水土流失.

WATER AND SOIL LOSS CONTROLLING COUNTERMEASURES WITHHARNESSING PROJECTS IN THE VALLEY OF DEBRIS FLOW

Debris flow is one special form and the most serious kind of water and soil loss, and may cause regional ecological environment worse step by step. Water and soil loss in this area is very serious. Slope erosion, gravitational erosion and hydraulic erosion are the three basic forms of water and soil loss in the valley of debris flow. The forming conditions of debris flow are the key factors that affected water and soil loss developing level in the drainage basin. Water and soil loss controlling effects in the valley of debris flow is remarkable by usage of harnessing projects. The practices of harnessing projects in Hongyugou Wushan county of Gansu province, Yunnan and Sichuan provinces proved that botanical methods and harnessing projects are very effective to slow down water and soil loss in the valley of debris flow.