深部矿井瓦斯赋存非线性特征
Gas Occurrence Nonlinear Characteristics of Deep Mine
-
摘要: 为了研究深部矿井瓦斯赋存非线性特征,提出了瓦斯含量临界深度的概念,它是地层压力和地层温度对煤体吸附性综合作用的结果,而这2个影响因素的影响效果是相反的。以平煤十矿为例,测定瓦斯吸附常数和瓦斯含量参数,建立深部矿井瓦斯赋存规律模型,分析发现平煤十矿戊9煤层在920 m处瓦斯吸附常数a值相比875 m处不升反降,己组煤层瓦斯含量在910 m左右随着埋深增加而不再明显增大,甚至略微减小,结果表明深部矿井瓦斯赋存具有非线性特征,即深部矿井在一定深度存在瓦斯含量临界深度。Abstract: In order to study the gas occurrence nonlinear characteristics of deep mine, the critical depth concept of gas content which is the result of two opposite factors` comprehensive effect on coal body adsorption is proposed. The opposite factors are formation pressure and formation temperature. In No.10 Coal Mine of Pingdingshang Tian'an Coal Industry, we determine the parameters of gas adsorption constant parameters and gas content, establish the model of gas occurrence law in deep mine for demonstration. The analysis find that the gas adsorptive a value of Wu9 coal at 920 m deep is bigger than that of 875 m, and the gas content of Ji15 coal no longer increases obviously with burial depth at about 910 m, but even slightly reduced. The results show that the gas occurrence of the deep mine has nonlinear characteristics that exists a critical depth of gas content at certain depth of deep mine.
-
Keywords:
- deep mine /
- gas occurrence /
- nonlinear character /
- critical depth /
- gas content
-
-
[1] 陈瑞端.煤层瓦斯涌出规律及其深部开采预测的研究[D].重庆:重庆大学,1996. [2] 王宏图,鲜学福,尹光志.煤矿深部开采瓦斯压力计算的解析算法[J].煤炭学报,1999(3):279-283. [3] 秦勇.中国煤层气成藏作用研究进展与述评[J].高校地质学报,2012(3):405-418. [4] 秦勇,刘焕杰,范炳恒,等.山西南部上古生界煤层含气性研究:推定区煤层含气性评价[J].煤田地质与勘探,1997(4):25-30. [5] 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(1):219-223. [6] 杨永国,秦勇.煤层气产能预测随机动态模型及应用研究[J].煤炭学报,2001(2):121-125. [7] 胡社荣,戚春前,赵胜利,等.我国深部矿井分类及其临界深度探讨[J].煤炭科学技术,2010(7):10-13. [8] 王宏图,鲜学福,杜云贵,等.煤矿深部开采煤层气含量计算的解析法[J].中国矿业大学学报,2002(4):367-369. [9] 韦重韬.煤层甲烷地质演化史数值模拟[M].徐州:中国矿业大学出版社,1999:10-25. [10] 秦勇,申建,王宝文,等.深部煤层气成藏效应及其耦合关系[J].石油学报,2012(1):48-54. [11] 秦勇,宋全友,傅雪海.煤层气与常规油气共采可行性探讨-深部煤储层平衡水条件下的吸附效应[J].天然气地球科学,2005(4):492-498. [12] 赵丽娟,秦勇,申建.深部煤层吸附行为及含气量预测模型[J].高校地质学报,2012(3):553-557. [13] 赵丽娟.深部煤层含气量预测及其地质控制-以鄂尔多斯盆地东部为例[D].徐州:中国矿业大学,2011. [14] 秦玉金.深部煤层瓦斯赋存特征与解吸规律研究及应用[D].阜新:辽宁工程技术大学,2012. [15] 俞启香.矿井瓦斯防治[M].徐州:中国矿业大学出版社,1992:10-19. [16] 孟召平,田永东,雷旸.煤层含气量预测的BP神经网络模型与应用[J].中国矿业大学学报,2008(7):456-461.
计量
- 文章访问数: 312
- HTML全文浏览量: 0
- PDF下载量: 0