Experimental Study on Gas Desorption Laws in Coal by Hydro－thermal Coupling
WANG Yuli
YUAN Mei
LI Chuang
XU Shiqing
ZHANG Ping
LONG Nengzeng
LI Xinling
Abstract：This paper takes the low permeability and difficult coal seam in Guizhou Province as the research object. Methane des-orption experiments were carried out at different temperature and moisture content with the HCA high-pressure capacity gas ad-sorption device. Research showed that the relationship between temperature and gas desorption amount in coal is positive, and the water content is negatively correlated with gas desorption amount in it, the temperature and water content have the most significant influence on gas desorption in coal during the first 30 minutes. Then the quantitative relationship between gas desorption amount in coal under water-heat coupling was deduced with the modified Barrell. Finally, the influence of four different coupling zones on gas desorption capacity in coal is theoretically analyzed.
Keywords：moisture contenttemperaturecouplingmethane desorption lawscoal and gas outburst
Publication Date：2019-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 4-8 )