岩石氡析出的瞬态响应
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摘要
主要研究受压条件下岩石中氡析出量的瞬时响应函数,为地震氡预测提供理论支撑。首先通过数值分析,建立了封闭条件下岩体在不同单轴压力条件下非稳态的氡浓度随时间响应的数学描述,理论分析岩体单轴压力下析出氡浓度随时间呈指数增长。在理论研究基础上,设计了单轴压力下岩石氡析出的瞬态响应物理实验模型,应用自主研发的氡及其子体总量实时连续测氡仪,获得单轴压力条件下岩石析出氡的瞬态变化曲线。封闭空间岩体在单轴压力下氡浓度实验测量结果与理论曲线符合,实验值与理论计算结果之间的误差总体控制在20%之内。
This paper studies the transient response function of the radon escaping from rocks under the uniaxial pressure and provide a method for earthquake forecasting.Theoretical analysis results show that the radon concentration in the limited chamber increases exponentially.The growth rate depends on the radon decay constant and the rock axial displacement.The experimental data are acquired through a continuous radon measurement instrument.The transient curves acquired are in good agreement with that by the theoretical analysis.The relative error is<20%.
引文
[1]李起彤.活断层及其工程评价[M].北京:地震出版社,1991.LI Q T.Active Fault and Its Engineering Evaluation[M].Beijing:Seismological Press,1991.(In Chinese)
    [2]Sugisaki R,Takamori Ito,Nag Amine K,et al.Gas geochemical changes at mineral springs associated with the 1995 southern Hyogo earthquake(M=7.21)[J].Japan Earth and Planetary Science Letters,1996,139:239-249.
    [3]苏尔坦霍贾耶夫.放射性气体在研究地质过程中的应用[M].北京:地震出版社,1983:75-95.Sultanhuojiaye S H.The Application of Radioactive Gas in the Study of Geological Process[M].Beijing:Seismological Press,1981:75-95.(In Chinese)
    [4]罗光伟,石锡忠.岩石标本受压时氡和钍射气量的实验结果[J].地震学报,1980,2(2):198-204.Luo G W,Shi X Z.Experimental results of radon and thorium emanations from rock specimen under pressure[J].Acta Seismologica Sinica,1980,2(2):198-204.(In Chinese)
    [5]韩学辉,王桂香.氡法监测地震的理想曲线模型探讨[J].太原理工大学学报,2000,31(1):101-103.Han X H,Wang G X.The ideal curve model on earthquake prediction by radon monitoring[J].Journal of Taiyuan University of Technology,2000,31(1):101–103.(In Chinese)
    [6]谷懿,葛良全,王广西,等.汶川地震震后大成都地区断裂带活动性氡气测量分析评价[J].工程地质学报,2009,17(3):296-300.Gu Y,Ge L Q,Wang G X,et al.Analysis and evaluation of faults activities in Chengdu region with radon concentration measurements after Wenchuan earthquake[J].Journal of Engineering Geology,2009,17(3):296-300.(In Chinese)
    [7]蒋灏,夏雅琴.地震预报研究水平、预报方法及展望综述[J].北京工业大学学报,2001,27(2):251-254.Jiang H,Xia Q Y.Summary of research level,forecasting methods and prospect in seismic forecasting[J].Journal of Beijing Polytechnic University,2001,27(2):251-254.(In Chinese)
    [8]官致君.四川地区水化学短期异常指标与地震预测方法[J].四川地震,2003(4):21-27.Guan Z J.Short-term anomaly indexes of hydrochemistry in Sichuan Province and the methods of earthquake prediction[J].Earthquake Research in Sichuan,2003(4):21-27.(In Chinese)
    [9]Salvatore De Martino,Carlo Sabbarese,Giulia Monetti.Radon emanation and exhalation rates from soils measured with an electrostatic collector[J].Appl Radiat Isot,1998,49(4):407-413.
    [10]刘庆成,程业勋,章晔.环境中氡运移理论与计算方法研究[J].物探与化探,1998,22(2):149-152.Liu Q C,Cheng Y X,Zhang Y.The study of the migration theory and calculation method of radon in the environment[J].Geophysical and Geochemical Exploration,1998,22(2):149-152.(In Chinese)
    [11]Pedro L Fernández,Luis S Quindós,Carlos Sainz,et al.A theoretical approach to the measurement of radon diffusion and adsorption coefficients in radon proof membranes[J].Nuclear Instruments and Methods in Physics Research Section B,2004,217:167-176.
    [12]贾文懿,方方,周蓉生.氡及其子体运移规律与机理研究[J].核技术,2000,23(3):169-175.Jia W Y,Fang F,Zhou R S.Studies on the migration rule and mechanism of radon and its daughters[J].Nuclear Technology,2000,23(3):169-175.(In Chinese)
    [13]葛良全,邹功江,谷懿,等.非稳态条件下土壤中氡浓度数理模型探讨[J].成都理工大学学报:自然科学版,2012,39(3):323-327.Ge L Q,Zou G J,Gu Y.Research on mathematicphysical model of radon migration in soil under unsteady conditions[J].Journal of Chengdu University of Technology(Science&Technology Edition),2012,39(3):323-327.(In Chinese)
    [14]Geertsma J.The effect of fluid pressure deline on volumetric changes of porous rocks[J].AIME,1957,10:331-430.
    [15]Vander Knaap W.Nonlinear behavior elastic porous media[J].AIME,1959,216:179-187.

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