Fire risk evaluation research on fully mechanized coalface based on the uncertainty measure theory

A relatively perfect coalmine fire risk-evaluating and order-arranging model that includes sixteen influential factors was established according to the statistical information of the fully mechanized coalface ground on the uncertainty measure theory. Then the single-index measure function of sixteen influential factors and the calculation method of computing the index weight ground on entropy theory were respectively established. The value assignment of sixteen influential factors was carried out by the qualitative analysis and observational data, respectively, in succession. The sequence of fire danger class of four experimental coalfaces could be obtained by the computational aids of Matlab according to the confidence level criterion. Some conclusions that the fire danger class of the No.l, No.2 and No.3 coalface belongs to high criticality can be obtained. But the fire danger class of the No.4 coalface belongs to higher criticality. The fire danger class of the No.4 coalface is more than that of the No.2 coalface. The fire danger class of the No.2 coalface is more than that of the No.1 coalface. Finally, the fire danger class of the No.1 coalface is more than that of the No.3 coalface.

A relatively perfect coalmine fire risk-evaluating and order-arranging model that includes sixteen influential factors was established according to the statistical information of the fully mechanized coalface ground on the uncertainty measure theory.Then the single-index measure function of sixteen influential factors and the calculation method of computing the index weight ground on entropy theory were respectively established.The value assignment of sixteen influential factors was carried out by the qualitative analysis and observational data, respectively, in succession.The sequence of fire danger class of four experimental coalfaces could be obtained by the computational aids of Matlab according to the confidence level criterion.Some conclusions that the fire danger class of the No.1, No.2 and No.3 coalface belongs to high criticality can be obtained.But the fire danger class of the No.4 coalface belongs to higher criticality.The fire danger class of the No.4 coalface is more than that of the No.2 coalface.The fire danger class of the No.2 coalface is more than that of the No.1 coalface.Finally, the fire danger class of the No.1 coalface is more than that of the No.3 coalface.