摘要
According to the gas observational data,the gas spatiotemporal distributions were analyzed in full-mechanized top coal caving in thick,hard and high-gas seams.The factors influencing gas effusion were researched and the rules of gas effusion under the special conditions were educed,for example,the underground pressure,the output inten- sity,the working surface advancement,and the amount of ventilation in the working face on gas effusion,and so on.The research results can be the base of forecasting gas effu- sion and controlling gas in these special conditions,which can guarantee the safety of highly efficient full-mechanized top coal caving.
According to the gas observational data, the gas spatiotemporal distributions were analyzed in full-mechanized top coal caving in thick, hard and high-gas seams. The factors influencing gas effusion were researched and the rules of gas effusion under the special conditions were educed, for example, the underground pressure, the output intensity, the working surface advancement, and the amount of ventilation in the working face on gas effusion, and so on. The research results can be the base of forecasting gas effusion and controlling gas in these special conditions, which can guarantee the safety of highly efficient full-mechanized top coal caving.
基金
the National Nature Science Fund(50574072)
the Shaanxi Nature Science Fund(2007E230)
