瓦斯放散初速度对掘进面初始瓦斯涌出量的影响研究
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摘要
瓦斯放散初速度Δp表征了煤层初始释放瓦斯的强度,对掘进工作面煤体初期瓦斯涌出量的大小具有重要影响作用。通过实验参数测定并结合现场数据监测,研究分析了高河能源3~#煤层同一巷道不同区域瓦斯放散初速度与不同进尺工作面瓦斯涌出量之间的相关性。研究结果表明,掘进工作面瓦斯涌出量随着单位时间进尺的增加呈线性函数增长;且在相同掘进条件下,瓦斯放散初速度越大,掘进工作面单位时间涌出量越大。
The initial speed of methane diffusion Δp reflects the initial release of gas from the coal seam,and which has an important influence on initial gas emission in driving face.Based on parametric measurement and on-site data monitoring, studied and analyzed the correlation of initial speed of methane diffusion and gas emission rate in driving face of different footage in different laneway section of Gaohe colliery.The result of research shows that the gas emission in driving face keep growth with the speed of advance by the linear function. And under the same conditions driving conditions, the greater initial speed of methane diffusion, the greater the amount of gas emission in driving face per unit time.
The initial speed of methane diffusion Δp reflects the initial release of gas from the coal seam,and which has an important influence on initial gas emission in driving face.Based on parametric measurement and on-site data monitoring, studied and analyzed the correlation of initial speed of methane diffusion and gas emission rate in driving face of different footage in different laneway section of Gaohe colliery.The result of research shows that the gas emission in driving face keep growth with the speed of advance by the linear function. And under the same conditions driving conditions, the greater initial speed of methane diffusion, the greater the amount of gas emission in driving face per unit time.
引文
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[2]高建良,候三中.掘进工作面动态瓦斯压力分布及涌出规律[J].煤炭学报,2007(11):1 127-1 131.
[3]梁绍权.掘进工作面瓦斯动态涌出影响因素分析[J].煤炭技术,2008,27(12):69-71.
[4]候三中.掘进过程中瓦斯涌出量与掘进速度的关系研究[J].煤炭技术,2016,35(4):146-149.
[5]吕平洋,付帅,魏怡航,等.煤的坚固性系数影响因素分析[J].华北科技学院学报,2015,12(3):45-48.
[6]侯锦秀.煤结构与煤的瓦斯吸附放散特性[D].焦作:河南理工大学,2009.
[7]贾东旭,孙景来.不同变质程度煤体破碎度对瓦斯放散初速度的影响[J].煤炭科学技术,2013,41(8):68-70.
[8]李云波.构造煤瓦斯解吸初期特征实验研究[D].焦作:河南理工大学,2011.