Research and application of gas pressure calculation method of coal seam based on residual gas pressure of coal sample
WANG Jiang
GUAN Lianhe
QI Liming
XIONG Junnan
ZHANG Ke
Abstract：It is necessary for disaster prevention and control of coal mine to research a new method determining coal seam gas pressure which has some characteristics such as operating easily,mensurating accurately and good applicability.At first,the influence factor of residual gas pressure of coal sample is analyzed theoretically;afterwards,the relevance of residual gas pressure of coal sample and initial gas pressure of coal sample is researched by making use of experiment,and gas pressure calculation method of coal seam based on residual gas pressure of coal sample is proposed;finally,application is carried out.The results show that influ-ence factors of residual gas pressure of coal sample are gas pressure of coal seam,granularity of coal sample,time of gas desorption and coal characteristics,and the relevance of residual gas pressure of coal sample and initial gas pressure of coal sample is linear,and the gas pressure in coal seam that is inferred by the residual gas pressure of coal sample is reliable relatively.
Keywords：gas pressureresidual gas pressure of coal sampleinitial gas pressure of coal samplegas desorp-tionadsorption equilibrium
Publication Date：2024-08-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 1-6 )