QUALITATIVE EXPLANATION OFTHE ABNORMAL DISTRIBUTION INDEBRIS FLOW

in this paper, the bouncing movementof the blocks in the debris flow is assumed, a singleblock's movement in the stable flow field is analyzed,the relation of the number density with the heightand the relation of the mean diameter of the blockswith the height are obtained with some hypothe-ses and numerical computation, and the abnormaldistribution in the debris flow is explained quanti-tatively.