| 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 |
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| 引用本文： | 张昭栋,郑金涵,张广城. 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, 1988, 10(2): 171-182 |
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| 作者姓名： | 张昭栋 郑金涵 张广城 |
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| 作者单位： | 1. 山东省地震局2. 国家地震局地球物理研究所3. 山东省地质矿产局 |
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| 摘 要： | 本文把水井含水层系统和水位观测系统联系在一起综合进行讨论,从振动学理论推导出这两个系统的二自由度振动方程组。从这个方程组的一些可能的解讨论了这两个系统对地震波和固体潮响应的影响因素。 认为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,主要取决于这两个系统的固有周期。 理论分析表明,对于地震波来说,含水层的导水系数越大,水井水柱的有效高度越大;观测仪器的等效质量越大,浮标截面圆半径越大;井管截面圆半径越小,则系统响应的放大倍数越大。但是,这些因素对于长周期固体潮响应的影响很小;并指出在某些情况下水位观测系统的周期可起重要作用,在研究分析中不应忽视。
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| 关 键 词： | 水井含水层系统 水位观测系统 放大倍数 位相滞后 固有周期 |
RESPONSE OF WELL-AQUIFER SYSTEM AND WATER LEVEL OBSERVATION SYSTEM TO EARTH TIDES AND SEISMIC WAVES |
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| Affiliation: | 1. Seismological Bureau of Shandong Province;2. Institute of Geophysics, State Seismological Bureau;3. Geological and Mineral Bureau of Shendong Province |
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| Abstract: | This paper makes a comprehensive discussion of the well-aquifer system and water level observation system, and from the oscillation theory, has developed the oscillation equations with two degrees of freedom for these two systems. With the possible solutions to this set of equations, this paper discusses the factors that affect the response of these two systems to seismic waves and earth tides. It is considered that the above-mentioned response mainly depends on the intrinsic periods of these two systems. Theoretical analysis shows that, as to seismic waves, as the aquifer's transmissibility gets greater, the effective height of the well water column get bigger, the equivalent mass of the observation instruments gets larger, the radius of the buoy section gets bigger and the radius of the well casing section gets smaller, the amplification of the system's response gets larger. But these factors exercise small effect on the response of earth tides of long periods. It is also pointed out that under certain circumstances the period of the water level observation system may play an important role, which should not be neglected in research and analysis. |
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