综采工作面三维空间风速与瓦斯浓度分布规律实测与分析
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摘要
为了得到风速与瓦斯浓度在综采工作面巷道三维空间的分布规律,采用现场实测与理论分析相结合的研究方法,以沙曲煤矿14205综采工作面为研究对象,分别对检修班期间与生产班期间综采工作面瓦斯浓度与风速进行实测,分别对综采工作面内风速与瓦斯浓度从工作面巷道走向方向、工作面推进方向及垂直于工作面底板方向3个空间方向上的分布规律进行了分析,研究表明:靠近煤壁的巷道断面区域为综采工作面定点测风最佳位置,综采工作面前半段工作面长度范围内靠近煤壁且处于下部的巷道断面区域,和综采工作面后半段工作面长度范围内靠近采空区且处于上部的巷道断面区域为瓦斯浓度重点监测区域。
In order to obtain the distribution laws of wind speed and gas concentration in the three-dimensional space of roadway of fully mechanized mining face, adopting the research methods of field measurement and theoretical analysis, taking 14205 fully mechanized face of Shaqu Coal Mine as the research object, gas concentration and wind speed in fully mechanized coal face during production period and maintenance period were measured. The distribution laws of wind speed and gas concentration in fully mechanized mining face from three spatial directions of working face roadway strike direction, working face advance direction and perpendicular to working face floor direction were analyzed respectively. The results showed that the roadway section area near the coal wall was best area for wind measurement, and the roadway area which was near the coal wall and at the lower half section of roadway in front of half length range of coal face and the roadway area which was near the gob and at the upper half section of roadway in the length of the second half of coal face were key monitoring areas of gas concentration.
In order to obtain the distribution laws of wind speed and gas concentration in the three-dimensional space of roadway of fully mechanized mining face, adopting the research methods of field measurement and theoretical analysis, taking 14205 fully mechanized face of Shaqu Coal Mine as the research object, gas concentration and wind speed in fully mechanized coal face during production period and maintenance period were measured. The distribution laws of wind speed and gas concentration in fully mechanized mining face from three spatial directions of working face roadway strike direction, working face advance direction and perpendicular to working face floor direction were analyzed respectively. The results showed that the roadway section area near the coal wall was best area for wind measurement, and the roadway area which was near the coal wall and at the lower half section of roadway in front of half length range of coal face and the roadway area which was near the gob and at the upper half section of roadway in the length of the second half of coal face were key monitoring areas of gas concentration.
引文
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[2]林青,黄旭超,张朝举,等.多重保护层开采高瓦斯综采面瓦斯涌出规律研究[J].煤矿开采,2010,15(1):94-96.
[3]王志辉,刘军,郑三龙.水平分段综放工作面瓦斯涌出影响因素分析[J].中州煤炭,2016(10):14-18.
[4]武华太.高瓦斯煤层群综采面瓦斯涌出影响因素研究[J].中国煤炭,2008,34(10):78-81.
[5]刘军,孙秉成,黄中峰.水平分段综放开采工作面瓦斯涌出及分布特征[J].中国矿业,2016,25(7):97-101.
[6]郑吉玉,韩春雷,徐辉,等.综放工作面瓦斯来源及分布规律研究[J].煤炭技术,2015,34(3):126-129.
[7]陈大力,秦永洋,赵俊峰,等.综采工作面瓦斯涌出规律及影响因素分析[J].煤矿安全,2003,34(12):7.
[8]戴广龙,储方健.综采放顶煤工作面瓦斯涌出规律的分析[J].煤矿安全,2005,36(8):55-57.
[9]贺化平.综采面瓦斯来源及分布规律现场实测分析[J].工业安全与环保,2015,41(10):68-71.
[10]温百根.高瓦斯煤层群综采面瓦斯涌出分布规律[J].中国矿业,2008,17(9):93-95.
[11]杨茂林,薛友欣,姜耀东,等.离柳矿区综采工作面瓦斯涌出规律研究[J].煤炭学报,2009,34(10):1349.