STUDY ON MECHANISM OF RAINFALL EROSION REINFORCEMENT IN WORLD HERITAGE YUANYANG TERRACE FIELD
The geological disaster of landslide-debris flow occurred beneath the viewing platform of the Yuanyang terrace,a world heritage site,resulting in the erosion and loss of 146.8 mu of terrace area.To reinforce the ridge and restore the terrace,an investigation was conducted on the grouting reinforcement mechanism under rainfall conditions through indoor model testing.This study analyzed the erosional development,variations in internal volumetric water content,pore water pressure,matrix suction,and soil pressure,characteristics of flow and sediment yield,as well as characteristics of overland velocity.The findings revealed that:grouting reinforcement enhances the blocking effect of the ridge,which has the benefit of reducing water and sediment,and has the regulation effect on the development of rill.The grouting and reinforcement of terraced fields slow down the erosion development speed and do not change the erosion development mode.The benefit of water and sediment reduction of the grouting and reinforcement decreases with the increase of rain intensity.
the Yuanyang terracesridge reinforcementerosion mechanism
NETL
NSTL
万方数据
