Rate Evaluation of the Diffusive and Concentrative Transports in Artificial Landform Changes and the Related Problems of Slope Land

Abstract

There are two types of landmass transportation concerning the artificial landform changes. One is the diffusive transport and the other is concentrative one of the excavated materials. The rate of transport is compared with that of natural geomorphic process, using the mathematical model describing the landform change. The simplest solution of the model coinciding the diffusion equation with drift（transport）term can be a measure to evaluate the rate of transport with diffusion and the reverse concentration. Rate for both artificial landform changes compared with the natural process evokes the problems especially in the diffusive reclaiming and constructive concentration by the compaction and the subsurface stress increase by overburden concerning the earthquake occurrence.