Coal-bed Methane Seepage Of The Mathematical Model Research In Fukang Mining Area, Xinjiang

China has rich coal-bed methane reservoir resources, ranking the third in the world, the most of allcloth in300-1500m depths. It has very broad prospects for mining and resource values. In the southernJunggar coalfield in Xinjiang by drilling data and analysis of coal-bed methane samples knowthat it is seam heavy in the area. The study area mainly has gas coal and coking coal and coal-bedmethane enrichment. Through the early work in the field and lookup information literatureshow that coal reservoir has a good structural conditions and permeability in the study area.This is the CBM ideal storage and transport environment. The consolidated appeal conditions, thestudy area is ideal mining for CBM.All of study samples from Fukang mining area, through the industry analysis,determination of porosity and isothermal pressure experiment, obtained the correspondingdata, for the study of the coal-bed methane seepage provides a basis theory.On the basis of the actual data and domestic and foreign literature, through the analysisof coal-bed methane seepage mechanism of stage, simplified mathematical model of coal-bedmethane mainly have the following three aspects:(1) There are three forms coal-bed methane in the coal reservoir. Its main two forms areadsorbed free state in reservoir. Mined coal bed methane from the coal matrix porosity hasgone through three main processes, namely, desorption, diffusion and seepage.(2) Through a simplified physical model, mathematical model is established.(3) After Fukang mine coal-bed methane numerically simulated, according to computerprogramming and do some evaluation of the resources.