Abstract
Abstract In order to further study inhibitory effect of gas desorption in coal seam water infusion, the laboratory test method is used in this paper, which experiments on coal sample that is fully adsorbed methane before being injected water into. By the experiments, gas desorption isotherms, gas desorption rate and residual gas content after water injection are obtained. And also, the following test results are got: the first, with water being injected, coal gas desorption isotherms moves upward, that is, gas content in coal sample increases under a certain balance pressure; the second, with water being injected, it can lower both the initial desorption rate and the attenuation speed of gas adsorption in coal sample, that is, coal gas desorption rate curve becomes more smooth; the third, with water being injected, it increases residual gas content in coal, and residual gas content increases with injection pressure and water content. Through these experiments, the following conclusions can be drawn: with high pressure water being injected into pores of coal, residual water in coal has inhibitory effect to adsorption methane, ultimately, reducing gas desorption rate and desorption volume; so that, water injection is benefit for gas outburst, and the inhibitory effect is an important role in mechanism of water injection to prevent coal and gas outburst.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
