综采工作面瓦斯涌出量数学预测模型建立及实测应用
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摘要
为了实现综采工作面瓦斯涌出量精准化预测的目的,以煤体瓦斯涌出规律本构方程为理论研究基础,综合综采工作面各瓦斯涌出源自身特征因子,建立了煤壁瓦斯涌出量数学预测模型、落煤瓦斯涌出量数学预测模型、采空区遗煤瓦斯涌出量数学预测模型以及邻近层瓦斯涌出量数学预测模型。运用该数学预测模型对近距离煤层群条件下的沙曲煤矿14205综采工作面瓦斯涌出量进行了计算,计算结果与实测统计值之间的误差仅为4.92%<5.00%,验证了该数学预测模型的准确性。在此基础上,运用该数学预测模型对14205综采工作面不同产煤量条件下的瓦斯涌出量进行计算,结果表明:14205综采工作面瓦斯涌出量随工作面产煤量增加近似呈线性增大,其中邻近层瓦斯涌出量最为显著。
In order to realize accurate prediction of gas emission rate in fully mechanized coal face of close-distance coal seam group,based on the constitutive equation of coal gas emission,the calculation model of gas emission rate of coal wall,the calculation model of gas emission rate of fallen coal,the calculation model of gas emission rate of remaining coal in gob and the calculation model of gas emission rate of the adjacent coal seams were established, combining with characteristic factors of gas emission source in fully mechanized coal face. By the prediction model gas emission rate of14205 fully mechanized coal face in Shaqu Coal Mine was calculated,and the predicted value and the measured value of statistical error was 4. 92%,on this basis,by the prediction model gas emission rates of 14205 fully mechanized coal face in different annual output of coal were predicted. The research shows that gas emission rate of 14205 fully mechanized coal face increases linearly with the increase of annual output of coal,gas emission rate of the adjacent coal seams is the most significant.
In order to realize accurate prediction of gas emission rate in fully mechanized coal face of close-distance coal seam group,based on the constitutive equation of coal gas emission,the calculation model of gas emission rate of coal wall,the calculation model of gas emission rate of fallen coal,the calculation model of gas emission rate of remaining coal in gob and the calculation model of gas emission rate of the adjacent coal seams were established, combining with characteristic factors of gas emission source in fully mechanized coal face. By the prediction model gas emission rate of14205 fully mechanized coal face in Shaqu Coal Mine was calculated,and the predicted value and the measured value of statistical error was 4. 92%,on this basis,by the prediction model gas emission rates of 14205 fully mechanized coal face in different annual output of coal were predicted. The research shows that gas emission rate of 14205 fully mechanized coal face increases linearly with the increase of annual output of coal,gas emission rate of the adjacent coal seams is the most significant.
引文
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[11]陈延可,戴广龙,汪大全,等.上保护层开采卸压瓦斯治理技术研究[J].煤炭科学技术,2013,41(3):77-80.
[12]吕伏,梁冰,孙维吉,等.基于主成分回归分析法的回采工作面瓦斯涌出量预测[J].煤炭学报,2012,37(1):113-116.
[13]赵建安,李峰云,詹智伟.易自燃特厚煤层高瓦斯工作面瓦斯治理技术[J].煤矿安全,2015,46(3):119-122.
[14]桑聪,李伟,张浪,等.突出煤层群综采工作面煤壁瓦斯涌出计算方法研究[J].煤炭科学技术,2016,44(9):99-104.
[15]王志亮.综放工作面煤壁瓦斯动态涌出计算方法研究[J].煤炭科学技术,2013,41(6):54-57.
[2]常海雷,刘彦青,张浪,等.“U+I”型通风形式下综放工作面采空区遗煤及支架上方煤壁瓦斯放散与运移规律研究[J].煤炭科学技术,2017,44(2):39-44.
[3]武福生,刘水文,张忱,等.基于瓦斯涌出量的煤体瓦斯解吸特性研究[J].煤炭工程,2014,46(4):116-118.
[4]崔洪庆,樊帅帅,关金锋.采煤工作面瓦斯涌出量分源计算[J].中国安全科学学报,2015,25(10):78-83.
[5]刘硕,王俊峰,温伟,等.分源法瓦斯预测原理的运用[J].煤炭技术,2014,33(5):66-68.
[6]马建宏,陈懿博,庞泽明.综放工作面瓦斯涌出量预测方法及工程实践[J].中国安全科学生产技术,2014,10(10):143-147.
[7]付斌,周宗红,王友新.综放工作面瓦斯涌出量预测研究及应用[J].矿冶,2016,25(2):24-27.
[8]刘新喜,王勇,赵云胜.回采工作面瓦斯涌出特征及其灰色预测模型[J].中国安全科学学报,2001,11(1):11-15.
[9]魏春荣,李艳霞,孙建华,等.灰色-分源预测法对煤矿瓦斯涌出量的应用研究[J].采矿与安全工程学报,2013,30(4):628-632.
[10]肖家平,戴广龙.基于BP神经网络分源预测综采面瓦斯涌出量研究[J].安徽理工大学学报(自然科学版),2011,31(4):51-55.
[11]陈延可,戴广龙,汪大全,等.上保护层开采卸压瓦斯治理技术研究[J].煤炭科学技术,2013,41(3):77-80.
[12]吕伏,梁冰,孙维吉,等.基于主成分回归分析法的回采工作面瓦斯涌出量预测[J].煤炭学报,2012,37(1):113-116.
[13]赵建安,李峰云,詹智伟.易自燃特厚煤层高瓦斯工作面瓦斯治理技术[J].煤矿安全,2015,46(3):119-122.
[14]桑聪,李伟,张浪,等.突出煤层群综采工作面煤壁瓦斯涌出计算方法研究[J].煤炭科学技术,2016,44(9):99-104.
[15]王志亮.综放工作面煤壁瓦斯动态涌出计算方法研究[J].煤炭科学技术,2013,41(6):54-57.