Experimental Study on Rapid Determination Method of Coal Seam Gas Content by Indirect Method

In view of the problems heavy work, long cycle, high cost and low efficiency in process indirect determination coal seam gas content, basic parameters quality indexes 24 samples from 5 mines Hancheng area Shanxi Province are measured by laboratory measurement method. The raw content–gas desorption index drilling cuttings (W–K1) relationship model is characterized logarithmic function. Using SPSS data analysis software, a stepwise multiple linear regression method used for statistical analysis. results show that factors have significant impact on slope C W–K1 adsorption constant (a), apparent density (ARD), initial velocity diffusion (Δp) consistent coefficient (f). D Δp atmospheric (Q). Then, mathematical rapid prediction content determined. Compared with values, average absolute error rate 12.84%, which meets requirements provides simple easy area.