ON THE INFILTRATION MODES OF SURFACE RUNOFF IN THE LOESS LAYER AND GEOLOGICAL HAZARDS

The basic characters of gravity water are generalized.,The authors suggest that the gravity water is one of the key factors of the hazards such as loess slope slides,ground fissures and loess tunnels.Through example study such as loess tunnel hazard,the modes of surface runoff are generalized as four basic modes:gravity water evenly infiltration mode,surface runoff injection mode,gravity water injection through dominant path mode and multiple mode.