瓦斯地质规律法在煤层瓦斯含量预测中的应用
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摘要
煤层瓦斯含量分布特征是煤矿瓦斯灾害防治的技术基础。分析了研究区域内断层对煤与瓦斯分布的控制作用,并采用Anderson断层模式对断层2盘瓦斯积聚的规律进行了力学分析讨论,揭示了研究区域内的瓦斯地质规律,认为在锅底山断层的推挤作用下,艾山断层表现为封闭性,上下2盘煤体剪切破坏严重,破坏带内煤层透气性急剧下降,瓦斯逸散困难,断层2盘附近煤层瓦斯含量较高,造成瓦斯富集,并表现出煤层瓦斯含量随距断层由近及远呈递减并趋稳定之态。选取平煤十一矿己16-17煤层己二采区东翼为应用区域,建立了埋深和距断层距离等因素与含量的定量关系,预测了未采区煤层瓦斯含量的分布,并在生产中对预测值与实测值进行对比,相对误差在5%以下,验证了利用瓦斯地质规律法预测煤层瓦斯含量的可靠性。
The prevention and control technology of gas disaster in coal mine is based on the distribution characteristics of the coal seam gas content. In this paper,it analyzed the control effect of the fault for the coal and gas distribution in the study area,and discussed the law of gas accumulation in the two fault walls from the mechanical analysis point by the fault mode of Anderson,which revealed the law of gas geology in the study area. It was thought that Aishan fault presented as sealing property under the subduction of Guodishan fault,and the coal in the two walls of which sheared and damaged seriously. Coal seam permeability decreased sharply in the failure zone,so it was difficult for the gas to dissipate. The coal seam gas content nearby the two walls of fault was relatively high,which enriched the gas. It presented that the coal seam gas content declined and tended to be stable condition from the near to the far at a distance from the fault. It selected the east wing of Ji'er mining block of JI16- 17 Coal Seam in No. 11 Mine of Pingdingshan Coal Mine as the application area,established the quantitative relation of the burying depth and the distance from the fault with the gas content,and predicted the distribution of coal seam gas content in the unmining areas. Then it contrasted predictive values with measured values in the production,the relative error was under 5%,which verified the reliability of this method.
The prevention and control technology of gas disaster in coal mine is based on the distribution characteristics of the coal seam gas content. In this paper,it analyzed the control effect of the fault for the coal and gas distribution in the study area,and discussed the law of gas accumulation in the two fault walls from the mechanical analysis point by the fault mode of Anderson,which revealed the law of gas geology in the study area. It was thought that Aishan fault presented as sealing property under the subduction of Guodishan fault,and the coal in the two walls of which sheared and damaged seriously. Coal seam permeability decreased sharply in the failure zone,so it was difficult for the gas to dissipate. The coal seam gas content nearby the two walls of fault was relatively high,which enriched the gas. It presented that the coal seam gas content declined and tended to be stable condition from the near to the far at a distance from the fault. It selected the east wing of Ji'er mining block of JI16- 17 Coal Seam in No. 11 Mine of Pingdingshan Coal Mine as the application area,established the quantitative relation of the burying depth and the distance from the fault with the gas content,and predicted the distribution of coal seam gas content in the unmining areas. Then it contrasted predictive values with measured values in the production,the relative error was under 5%,which verified the reliability of this method.
引文
[1]于不凡,王佑安.煤与瓦斯灾害防治及利用技术手册[M].北京:煤炭工业出版社,2000.
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[4]聂百胜,戴林超,颜爱华,等.基于支持向量回归机的煤层瓦斯含量预测研究[J].中国安全科学学报,2010,20(6):28-32.
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[8]魏国营,门金龙,贾安立,等.基于上覆基岩特征的赵固一矿井田煤层瓦斯富集区的判识方法[J].煤炭学报,2012,37(8):1315-1319.
[9]尹国勋,张祖银.华南龙潭组煤层中的瓦斯含量与沉积环境的关系[J].煤田地质与勘探,1987,15(3):5.
[10]韩军,张宏伟.构造演化对煤与瓦斯突出的控制作用[J].煤炭学报,2010,35(7):1125-1130.
[11]舒龙勇,程远平,王亮,等.地质因素对煤层瓦斯赋存影响的研究[J].中国安全科学学报,2013,40(3):96-99.
[12]刘国林,潘懋,谢宏,等.葛泉煤矿南翼瓦斯地质特征[J].地质力学学报,2009,15(3):315-320.
[13]王桂梁,徐凤银.芙蓉矿区层滑构造对瓦斯形成富集的制约作用[J].中国矿业大学学报,1999,28(1):9.
[14]张子敏,张玉贵.大平煤矿特大型煤与瓦斯突出瓦斯地质分析[J].煤炭学报,2005,30(2):137-140.
[15]刘咸卫,曹运兴,刘瑞,等.正断层两盘的瓦斯突出分布特征及其地质成因浅析[J].煤炭学报,2000,25(6):571-575.
[16]徐学锋.逆断层区构造煤形成机制及分布规律的数值模拟[J].煤田地质与勘探,2010,40(2):6-8.
[2]尹士献,孟献义,秦法球.六节点三角形单元预测瓦斯含量研究[J].河南理工大学学报:自然科学版,2010,20(6):140-146.
[3]林卫新,王永祥,郝天轩.基于灰建模的瓦斯含量多变量预测模型研究[J].中国安全科学学报,2008,18(5):41-46.
[4]聂百胜,戴林超,颜爱华,等.基于支持向量回归机的煤层瓦斯含量预测研究[J].中国安全科学学报,2010,20(6):28-32.
[5]刘俊友,胡宗正,林建东.双相介质地震波传播理论在煤层瓦斯含量预测中的应用[J].中国煤炭地质,2008,20(9):79-81.
[6]张振文,高永利,代凤红,等.影响晓南矿未开采煤层瓦斯赋存的地质因素[J].煤炭学报,2007,32(9):950-954.
[7]吴财芳,曾勇.基于遗传神经网络的瓦斯含量预测研究[J].地学前缘,2003,10(1):219-224.
[8]魏国营,门金龙,贾安立,等.基于上覆基岩特征的赵固一矿井田煤层瓦斯富集区的判识方法[J].煤炭学报,2012,37(8):1315-1319.
[9]尹国勋,张祖银.华南龙潭组煤层中的瓦斯含量与沉积环境的关系[J].煤田地质与勘探,1987,15(3):5.
[10]韩军,张宏伟.构造演化对煤与瓦斯突出的控制作用[J].煤炭学报,2010,35(7):1125-1130.
[11]舒龙勇,程远平,王亮,等.地质因素对煤层瓦斯赋存影响的研究[J].中国安全科学学报,2013,40(3):96-99.
[12]刘国林,潘懋,谢宏,等.葛泉煤矿南翼瓦斯地质特征[J].地质力学学报,2009,15(3):315-320.
[13]王桂梁,徐凤银.芙蓉矿区层滑构造对瓦斯形成富集的制约作用[J].中国矿业大学学报,1999,28(1):9.
[14]张子敏,张玉贵.大平煤矿特大型煤与瓦斯突出瓦斯地质分析[J].煤炭学报,2005,30(2):137-140.
[15]刘咸卫,曹运兴,刘瑞,等.正断层两盘的瓦斯突出分布特征及其地质成因浅析[J].煤炭学报,2000,25(6):571-575.
[16]徐学锋.逆断层区构造煤形成机制及分布规律的数值模拟[J].煤田地质与勘探,2010,40(2):6-8.
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