近距离被保护卸压煤体透气性变化规律实测研究
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摘要
为了在井下条件实测采动卸压煤体变化的渗透率,从瓦斯抽采的难易程度出发,通过六氟化硫示踪气体现场参数测试和抽采数据统计对被保护层卸压煤体渗透率进行了实测研究。通过对实测结果的分析,认为被保护层卸压煤体渗透率的变化与煤体应力状态有一定相关性,在保护层开采过程中,距离不同的被保护层卸压煤体都经历了渗透率小幅升高—小幅下降—急剧升高3个过程,距离越远的卸压煤层渗透率变化幅度越小,其变化趋势相对保护层工作面距离也越滞后。
In order to research on the mining-induced permeability characteristics,based on the degree of difficulty of gas-drainage,by means of SF6 tracer gas and drainage statistical data,the permeability characteristics of protective layer was studied. Through the experimental analysis,the permeability and the state of stress are relevant. Through the mining process of the protective layer,the permeability of the depressed coal seam experienced a slight variation. The amplitude of variation decreases with the increase of the distance between coal seams and the change will lag behind the working-face of the protective layer.
引文
[1]付玉,郭肖,贾英,等.煤基质收缩对裂隙渗透率影响的新数学模型[J].天然气工业,2005,25(2):143-145.Fu Yu,Guo Xiao,Jia Ying,et al.New mathematical model for effect of coal matrix shrinkage on fracture permeability[J].Natural Gas Industry,2005,25(2):143-145.
    [2]彭石林,叶朝辉,刘买利.多孔介质渗透率的NMR测定[J].波谱学杂志,2006,23(2):271-282.Peng Shilin,Ye Chaohui,Liu Maili.Measurement of permeability of porous rock using NMR T2relaxation distribution[J].Chinese Journal of Magnetic Resonance,2006,23(2):271-282.
    [3]Jerosch-Herold M,Thomann H.Permeability determination from NMR relaxation measurements for fluids in porous media[J].Magnetic Resonance Imaging,1995,13(1):XII.
    [4]Michael J H,Hans T.Permeability determination from NMR relaxation measurements for fluids in porous media[J].Magnetic Resonance Imaging,1995,13(6):XIV.
    [5]Georgi D,Kasap E,Altunbay M,et al.Permeability profiles-key to reservoir management[A].3rd SPWLA Well Logging Symp of Japan[C].Chiba,Japan,1997.
    [6]董敏涛,张新民,郑玉柱,等.煤层渗透率统计预测方法[J].煤田地质与勘探,2005,33(6):28-31.Dong Mintao,Zhang Xinmin,Zheng Yuzhu,et al.The approach on statistic predict of coal permeability[J].Coal Geology&Exploration,2005,33(6):28-31.
    [7]何琰,彭文,殷军.利用地震属性预测渗透率[J].石油学报,2001,22(6):34-36.He Yan,Peng Wen,Yin Jun.Permeability predictionby seismic attribute data[J].Acta Petrolei Sinica,2001,22(6):34-36.
    [8]陈遵德,郭爱华.地震数据预测渗透率问题的讨论[J].石油地球物理勘探,1998,33(S2):81-90.
    [9]田树红,张乃禄,张宏,等.压力恢复法求渗透率影响因素分析[J].西安石油大学学报(自然科学版),2006,21(3):27-30.Tian Shuhong,Zhang Nailu,Zhang Hong,et al.Analysis of the influencing factors of the reservoir permeability obtained by pressure build-up method[J].Journal of Xi’an Shiyou University(Natural Science Edition),2006,21(3):27-30.
    [10]王连国,缪协兴.岩石渗透率与应力、应变关系的尖点突变模型[J].岩石力学与工程学报,2005,24(23):4210-4214Wang Lianguo,Miao Xiexing.Cusp catastrophe model of relations among permeability,stress and strain of rocks[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(23):4210-4214.
    [11]王恩元,张力,何学秋,等.煤体瓦斯渗透性的电场响应研究[J].中国矿业大学学报,2004,33(1):62-65.Wang Enyuan,Zhang Li,He Xueqiu,et al.Electric field response of gas permeability of coal[J].Journal of China University of Mining&Technology,2004,33(1):62-65.
    [12]刘明举,刘彦伟.煤层透气系数计算问题分析[J].煤炭科学技术,2004,32(2):59-61.Liu Mingju,Liu Yanwei.Analysis on calculation issues of seam permeability coefficient[J].Coal Science and Technology,2004,32(2):59-61.
    [13]刘明举,何学秋.煤层透气性系数的优化计算方法[J].煤炭学报,2004,29(1):74-77.Liu Mingju,He Xueqiu.Optimistic calculation method of gas seepage coefficients[J].Journal of China Coal Socieity,2004,29(1):74-77.
    [14]张力,刑平伟.煤体瓦斯吸附和解吸特性的研究[J].江苏煤炭,2000(4):18-20.Zhang Li,Xing Pingwei.Study on gas adsorption and desorption characteristics of coal[J].Jiangsu Coal,2000(4):18-20.
    [15]Mahnken R,Kohlmeier M.Finiteelement simulation for rock salt with dilatancy boundary coupled to fluid permeation[J].Computer Methods Appl.Eng.,2001,190:4259-4278.
    [16]Oda M T,Takemura A,Aoki T.Damage growth and permeability change in triaxial compression tests of Inada granite[J].Mechanics of Materials,2002,34:313-331.
    [17]Schulze O,Popp T,Kern H.Development of damage and permeability in deforming rock salt[J].Engineering Geology,2001,61:163-180.
    [18]Bridgeman P W.Breaking tests under hydrostatic pressure and conditions of rupture[J].Phil.Mag.,1912(24):63-80.
    [19]邓志刚,齐庆新,李宏艳,等.采动煤体渗透率示踪监测及演化规律[J].煤炭学报,2008,33(3):273-276.Deng Zhigang,Qi Qingxin,Li Hongyan,et al.Evolution law of mining coal permeability by real-time tracer monitoring system[J].Journal of China Coal Socieity,2008,33(3):273-276.
    [20]周世宁,林柏泉.煤层瓦斯赋存及流动规律[M].北京:煤炭工业出版社,1998.

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