The influence of gas drainage on goaf spontaneous combustion and its prevention measures
Abstract：Based on the effection of stereo gas drainage to the spontaneous combustion zones distribution and coal spontaneous combustion, inthis paper, it had used the change of the airflow velocity as the entry point, and choosed U ＋ Ⅰ type ventilation system of Yima mine as the background. It had researched the change of ＂three zones＂ distribution and the coal spontaneous combustion in the goaf by the air leakage under the stereo gas drainage system. It is found that the gas drainage and＂ endogenous fire heating air pressure＂ can intensify the wind leakage in the goaf, complicate the differentiate limits of the spontaneous combustion zones range, and increase the risk of spontaneous combustion in the goaf. Finally, it had put forward the comprehensive fire prevention measures such as increasing the resistance to control air leakage, nitrogen injection and water injection, and grouting synchronization.
Keywords：gas drainagegoafair leakagefire heating air pressurespontaneous combustion
Publication Date：2011-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 505-509 )