The Experimental Studies on Ponding Infiltration Character of Fracture Loess （ I ）The Experimental Studies on Ponding Infiltration Character of Single Fracture Loess
According to the fracture features of the loess, the ponding infiltration character of single fracture loess, in this paper, was simulated with the limited boundary in Lab. The results showed that the ponding infiltration capacity was increased for loess fracture. The increased infiltration capacity, under the interaction of horizontal and vertical hydraulic gradient, was concentrated expression in the early infiltration stage and had directly relationship with the depths of fracture. Based on this research, the concept of incremental ratio per unit fracture length was put forward. Then, a law was obtained that the incremental ratio on fracture loess infiltration have character of sharply rising, slowly falling and basically stabling in this process. On the basis, a ponding infiltration model of single fissure loess with the limited boundary was built by regression analysis and the results indicated that the model was ideal.
LoessFractureInfihrationWetting frontIncremental ratio
NETL
NSTL
万方数据
维普
