TY - JOUR
TI - Study on the optimization of the in-situ gas pressure calculation method for coal samples containing water
AU - Wang Zhi-Peng
AU - Song Jie
AU - Yang Geng-Xin
AU - Zhu Zhong-Ping
AU - Xu Zhang
AU - Liu Zhao
AU - Ji Bing
AU - Gao Ming-Zhong
JN - Thermal Science
PY - 2025
VL - 29
IS - 2
SP - 1435
EP - 1441
PT - Article
AB - To improve the accuracy of in-situ gas pressure measurement in coal seams,  the calculation method for gas pressure in water-bearing,  pressure-maintained coal samples was optimized. The method's reliability was  verified by comparing calculation errors before and after optimization.  Results indicate that incorporating the adsorption capacity attenuation  coefficient, λ, and coal sample moisture content (ω) into the calculation  improved stability and reliability. The average error decreased  significantly from 15.79% -1.38%. This optimized method offers a reliable  and convenient approach for accurately measuring in-situ gas pressure in  water-bearing coal seams while maintaining high calculation accuracy.