This paper achieves decision-making of bidding by using the theory of fuzzy mathematics to establish a fuzzy comprehensive evaluation model.

Establishing a fuzzy comprehensive evaluation model,the paper tries to builds up a workable risk evaluation model in or- der to evaluate the risk of supply chain partnership and checks the practicability and workability of the model with a case.

By the harassment factor method,the paper comprehensively evaluated the unexpected geological hazards susceptibility degree;by the fuzzy message model,we comprehensively evaluated the rainfall,human engineering activities,earthquake and rock structure which are impacting on the trends in the evolution of geological hazards.

Used the fuzzy message model,rainfalls,human engineering activities,earthquakes and structures of rock groups impacting the trends in the evolution of geological hazards were comprehensively judged;the risk degrees of geological hazards were evaluated and forecasted,the high,moderate and mild risk degrees of unexpected geological disasters in Beijing were regionalized.

A model of multistage fuzzy comprehensive evaluation for unloading high-steep slope stability analysis has been established.

To control influence of subjective evaluation on evaluation,based on three-point interval number,the aim of this paper was mainly to define the expected value by the introduction of decision-making factor,and propose a changeable weight fuzzy comprehensive evaluation model.