Research on safety early warning system in coalmines based on extension theory

The indices system of safety early warning in coalmines was established on the basis of research on basic contents of coalmine safety forewarning. The weights of indices in the safety early warning indices system were ascertained with the method of AHP(Analytical Hierarchy Process). On the basis of analyzing the merits and defects of the existing models the synthetic safety early warning model was put forward. The model is based on matter element model in extension theory. The comprehensive correlative degree was taken as the evaluation rule in the model. It can avoid the subjectivity in early warning. At the end, safety condition of Xinzhuang coalmine was analyzed by using the indices and the model of early warning established above.