Study on Comparison of Methods to Determine Gas Drainage Radius and Existed Problems
Abstract：In order to rapidly and effectively eliminate the outburst danger of the mining and excavation faces, the paper stated each method to determine the gas drainage radius, pointed out the problems existed in the determination of the gas drainage radius and had an out- look on the further study to determine the gas drainage radius. The study results showed that the gas drainage radius measures at site had high measuring difficulty and poor accuracy. The measured results were only the interval value and other problems. The gas drainage radius measured could not be dynamically varied with the gas geological conditions. The gas drainage radius determined with the numerical simulation method had not considered the rheology features of the gas content coal and the effective gas drainage time determined had a high er- ror. A further study on the liquid and solid enuphng during the drainage process should consider the rheology features of the gas content coal to determine the rational gas drainage radius and to provide the basis for the gas disaster prevention and control.
Keywords：gas drainage radiuscoal and gas outburstburied depthtracing gasgas pressure
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 55-58,110 )