人类活动及植被对坡体滑塌的影响

Influences of Human Activities and Vegetations on Landslides and Avalanches

通过实例说明了人类的各种活动和不同植被状况对坡体滑塌的影响，并通过室内人工降雨模拟试验说明排水及护坡等工程措施对坡体稳定具有一定的保护作用。试采用无纺布模拟植被，认识到植被度的提高能够减少切沟侵蚀，从而达到延缓坡体滑塌的目的。探讨了引起坡体滑塌的主要原因，多数是坡内孔隙水压力达到峰值时产生滑塌。

The predominant factor of landslides and avalanches is the peak value of the void water pressure. According to the artificial rainfall experiments in laboratory, mechanical control measures can protect slope stability.Facts show chearly that human activities and vegetations can affect the landslides and avalanches.The landslide-avalanche risk with mathematical index method in human activities and vegetations is analysed by the author.