井-含水层系统对前驱波响应能力的分析
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摘要
对山西、河北、北京和江苏地区14口观测井的前驱波记录次数进行了统计分析,并给出了前驱波记录次数占统计年份地震总次数的百分比;利用Cooper等人推导的井-含水层系统放大因子表达式,分析了井-含水层系统的特征参数与前驱波响应能力之间的关系.研究结果表明,井-含水层系统对前驱波的响应能力大小与含水层的固有周期存在一定关系,即固有周期越大,记录前驱波的能力越强;井-含水层系统对前驱波的响应能力大小还与导水系数和井孔半径平方的比值大小有关,该比值越大,响应能力越强.
Recording number of precursors from fourteen observation wells in Shanxi, Hebei, Beijing and Jiangsu region is analyzed and percentage of recording number of precursors to total number of earthquakes during the statistic years is presented. The relationship between characteristic parameters of well-aquifer system and responding ability to precursors is analyzed by the expression of amplification factor of well-aquifer system induced by Cooper et al. The results indicate that responding ability of well-aquifer system to precursors is related to inherent period of well-aquifer, that is to say, the greater the inherent period is, the stronger the ability of recording precursor is. Responding ability of well-aquifer system to precursors is also related to ratio of transmissibility coefficient to square of radius of wells, and the greater the ratio is, the stronger the responding ability is.
Recording number of precursors from fourteen observation wells in Shanxi, Hebei, Beijing and Jiangsu region is analyzed and percentage of recording number of precursors to total number of earthquakes during the statistic years is presented. The relationship between characteristic parameters of well-aquifer system and responding ability to precursors is analyzed by the expression of amplification factor of well-aquifer system induced by Cooper et al. The results indicate that responding ability of well-aquifer system to precursors is related to inherent period of well-aquifer, that is to say, the greater the inherent period is, the stronger the ability of recording precursor is. Responding ability of well-aquifer system to precursors is also related to ratio of transmissibility coefficient to square of radius of wells, and the greater the ratio is, the stronger the responding ability is.
引文
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BredehoeftJD.1967.Responseofwell-aquifersystemstoearthtides[J].JGeophysRes,72(12):3075~3087
CooperHH.1965.Theresponeofwell-aquifersystemstoseismicwaves[J].JGeophysRes,70(16):3915~3926
车用太,鱼金子.2004.地下流体典型异常的调查与研究[M].北京:气象出版社,302
冯德益,潘琴龙,郑斯华,等.1984.长周期形变波及其所反应的短期和临震地震前兆[J].地震学报,6(1):42
何昌荣.2000.断层上的地震成核过程与前兆模拟研究[J].中国地震,16(1):1~11
李世愚,滕春凯,卢振业,等.2000.典型构造微破裂集结的实验研究[J].地震学报,22(3):278~286
刘谰波,郑香媛.1985.水井固体潮分析结果及其在地震预报中的应用[J].地震,5(1):7~12
刘万琴,李世愚,郑治真,等.1999.破坏性矿震震前短临阶段震源过程研究[J].地震学报,21(1):57~64
马胜利,马瑾,刘力强.2002.地震成核相的实验证据[J].科学通报,47(5):387~391
唐林波,李世愚,苏?,等.2002.地震长周期事件的研究[J].国际地震动态,(4):1~5
张淑亮,范雪芳.2003.井水位长周期事件记录及其机理讨论[J].地震,23(4):85~90
张淑亮,李冬梅,范雪芳.2005.井水位前驱波与气压、风、降雨及强震关系的分析[J].地震,25(3):69~77
张昭栋,郑金涵,张广城.1988.水井含水层系统与水位观测系统对固体潮与地震波的响应[J].地震学报,10(2):171~181
张昭栋,迟镇乐,陈会民,等.1999.水井含水层导水系数及其对地震波的响应[J].内陆地震,13(3):207~213
BredehoeftJD.1967.Responseofwell-aquifersystemstoearthtides[J].JGeophysRes,72(12):3075~3087
CooperHH.1965.Theresponeofwell-aquifersystemstoseismicwaves[J].JGeophysRes,70(16):3915~3926
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