CHARACTERISTIC RESEARCH AND GRADE EVALUTION OF LOESS' COLLAPSIBILITY

By analyzing influential factors of loess' collapsibility, the thesis gives preliminary research of loess' mechanism of collapsibility, and gives membership functions about influencing grade of loess' collapsibility, establishing the method of two-grade fuzzy comprehensive evaluation. The result of evaluating loess' collapsibility by the method compared with survey. The method proved to be feasibility and high calculate precision.