連続体手法による掃流砂量式に関する研究

Abstract

In the previous paper^1)- the authors presented a bed-load equation which was derived from their constitutive relations of debris flow. The equation underestimates somewhat the bed-load rate in the range of non-dimensional shear stress smaller than 0.2.This paper discusses a refinement of the constitutive equations in smaller range of shear stress, but greater than the critical value of initiation of sediment movement.A bed-load equation, then, is derived from the refined constitutive relations.The formula is tested in terms of the data obtained from flume tests carried by using both of sand particles and glass beads.