It was known that the condition effecting karst collapse was very complicated. Influential factors were various and interdependent, geologic body itself was heterogeneous and uncertain, and human activities were changeful. Thus, it had great application value and theoretical significance that introduced the fuzzy theory in prediction of karst collapse hazard. Fuzzy pattern recognition was used to predict the covered karst collapse hazard in Wuhan. Since existing closeness degree couldn't recognized efficiently, weight value was mingled with closeness degree and generalized Euclidean weight distance closeness degree was defined. In order to research, thirteen main factors of influencing karst collapse's hazard were...