GEO-HAZARD SUSCEPTIBILITY OF QUATERNARY GLACIAL DEPOSIT SLOPE|AT MOXI PLATFORM IN LUDING COUNTY OF SICHUAN PROVINCE

Erosion of river is the most important factor for occurrence of geo-hazards in Quaternary weak strata. This paper examines the bank slopes of Moxi Platform and carefully considers the internal relations between the river and the geo-hazards. It is based on the analysis of surveying geo-hazards in the bank slopes. It further evaluates the effect of environmental factors especially, the factors related with erosion of river, on stability of the bank slopes. Furthermore, the paper selects the highly related environmental factors to calculate the geo-hazard susceptibility map at the site. The results show that five factors including the curve of river, the river discharge, the grade of bank slope, the width of riverbed, and the width of bank slop are well contributed to the occurrence of geo-hazards. The geo-hazard susceptibility map predicted using a logistic model with the parameters can better illuminate the present and future features of the geo-hazards distribution. Based on the findings, the paper recommended preliminary suggestions for preventing geo-hazards at the Moxi platform.