Coal seam gas distribution monitoring based on activated carbon radon measurement technology

Gas disaster-prone areas often contain high gas content. Therefore, predicting areas with high gas content is also an effective means to predict gas disaster-prone areas. Coal seam gas content is the basis for calculating gas reserves and gas emission and also one of the important parameters to predict the outburst of coal and gas. So, it is very important to determine coal seam gas content accurately. Many research findings in domestic and foreign coal industries over last decades, there are many ways to determine coal seam gas content. But currently, common ways are exploratory boring coal core desorption method, working face boring coal dust desorption method, gas content coefficient method and high pressure adsorption method and so on. Based on the idea of geostatistics, the variogram is introduced to process the data of oxygen measurement with regionalized variables. The variation degree of oxygen measurement data in a certain direction is represented in detail through a specific parameter, namely, fractal dimension of variogram.