The formation and basic characteristics of sand-sliding slope composed of granular clasts are researched based on spot investigation and model tests. First

the effect of sand source region

sliding region and accumulation region in the development and evolution of this kind of slopes are discussed respectively. Then

the structural characteristics of loose matters which form the slopes are discussed. The influential factors and their significance analysis of natural repose angle of loose matters are concerned and a linear regression equation is derived to determine the angle. The stability and its identification index are analysed at the end.