论文成果

Thermo-Mechanical Numerical Analysis of Stress and Damage Distribution within the Surrounding Rock of Underground Coal Gasification Panels

摘要:Underground coal gasification (UCG) is a promising technology for extracting synthesis gas from coal seams through in situ gasification. This study aims to investigate the thermo-mechanical behavior and integrity of the surrounding rock in the gasification vicinity to facilitate safe and efficient UCG operations. Rock property testing experiments are conducted under varying temperature conditions, revealing significant temperature dependencies for the thermal and mechanical parameters. A thermo-mechanical coupling model is developed to analyze the stress and damage distribution near the gasification chamber. The influence of the temperature dependency of stress states and failure risks during the gasification process is evaluated. In addition, the effects of panel orientation, chamber width, maintaining duration, operating temperature and operating pressure on the failure behavior of the gasification surrounding rocks are illustrated through parametric analysis. The findings have practical implications for the design and assessment of UCG processes, enhancing the safety and efficiency of coal gasification operations.

关键字:underground coal gasification; rock properties; temperature dependency; thermo-mechanical behavior; failure mechanisms; damage distribution

ISSN号:2227-9717

卷、期、页:卷11期9

发表日期:2023-09-01

影响因子:0.000000

期刊分区(SCI为中科院分区):三区

收录情况:SCI(科学引文索引印刷版),EI(工程索引),SCIE(科学引文索引网络版)

发表期刊名称:PROCESSES

参与作者:肖强忠,吕乾,张言,侯友林

通讯作者:王鹏飞

第一作者:邓金根,刘伟

论文类型:期刊论文

论文概要:王鹏飞,邓金根,刘伟,肖强忠,吕乾,张言,侯友林,Thermo-Mechanical Numerical Analysis of Stress and Damage Distribution within the Surrounding Rock of Underground Coal Gasification Panels,PROCESSES,2023,卷11期9

论文题目:Thermo-Mechanical Numerical Analysis of Stress and Damage Distribution within the Surrounding Rock of Underground Coal Gasification Panels