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地震 ›› 1998, Vol. 18 ›› Issue (1): 21-27.

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井水位的“记忆”滞后效应

张昭栋1), 张华2), 吴子泉1)   

  1. 1)中国济南 250014 山东省地震局;
    2)中国济南 250014 山东省建筑工程学院
  • 收稿日期:1997-03-03 修回日期:1997-05-10 出版日期:1998-01-31 发布日期:2022-05-10
  • 作者简介:张昭栋,男,1942年12月出生,研究员,1981年获硕士学位,主要从事固体潮、地震地下流体及综合预报研究工作。

THE EFFECT OF “MEMORY” LAG OF WELL LEVEL

Zhang Zhaodong1), Zhang Hua2), Wu Ziquan1)   

  1. 1) Seismological Bureau of Shandong Province, Jinan 250014, China;
    2) Institute of Civil Engineering of Shandong Province, Jinan 250014, China
  • Received:1997-03-03 Revised:1997-05-10 Online:1998-01-31 Published:2022-05-10

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113

摘要： 观测资料表明,井水位对信息响应存在“记忆”滞后现象,它与一般的位相滞后不同。在鲁29井现场试验也证明了井水位对井口空气压力变化的响应存在“记忆”滞后现象。利用水平层状承压含水层模式,从理论上解释了井水位对井口空气压力变化响应的“记忆”滞后现象,认为这种现象与水井含水层的导水系数有关,含水层导水系数越小,这种现象越明显。用一般多元回归方法元法较好地扣除井水位中“记忆”滞后影响,作者给出了一种可以扣除这种影响的新方法。利用此方法处理了鲁03井观测资料,求出该井水位固体潮系数为1.8 mm/10-8,水位对固体潮滞后时间1.53 h;气压系数6.4 mm/hPa,滞后时间1.50 L用新方法改正后的水位中误差明显减小,改正效果较好。

关键词: 地下水位, 井水位, “记忆”滞后, 导水系数, 响应

Abstract: It is shown from the observational data that there is a phenomenon of “memory” lag in response to the information of well level. It is different from general phase lag. The on-the-spot experiment in the well Lu-29 is also shown the phenomenon of “memory” lag in water level response to the change of air pressure. Using a model of the pressured aquifer with horizontal layers, the phenomenon of “memory”lag in water level response to the change of air pressure is theoretically explained. It is considered that the phenomenon is related to the transmissibility in the well aquifer. The lower the transmissibility of the aquifer is, the more obvious phenomenon of “memory” lag will be. It is difficult to remove the influence of memory” lag in the well water level by using the general multiple regression. In this paper, a new method to remove this influence is proposed. The observation data in the well Lu-03 are processed by using this method, and the result shows that the tidal coefficient of the well water level is 1. 8 mm/10 8, the lag time of the well water level to the earth tide is 1. 53 h, the barometric coefficient is 6. 4 mm/hPa and lag time is 1. 50 h. The standard deviation of the water level corrected by the new method evidently decreases. The corrected result is better.

Key words: Groundwater level, Well water level, “Memory” lag, Transmissibility, Response