Study on Fuzzy Numerical Solution of Stope Gas Seepage Flow of Non-uniform Pore Medium

Applying the differential equation of steady flow of non-uniform pore medium to disclose the flowage of stope gas, it is very difficult to estimate the penetrability coefficient of pore medium, and it is insignificant to estimate accurately. The concepts of the fuzzy penetrability coefficient and the fuzzy qualified differential equation are put forward The problem of the fuzzy gas permeating flow on stope may be prescribed by a fuzzy qualified differential equation. At the same time, the approximate numerical solution of fuzzy permeating flow equation is relevantly discussed using the fuzzy structuring element method. It is very useful analyzing tool to forecast the tendency and position of goaf spontaneous combustion by applying the fuzzy forecasting technique.