关键词: 井水水位, 固体潮, 井－含水层系统

Abstract: Based on the theories of porous medium seepage and elasticity,the partial differential equations on the response of the well-water bearing system to the Earth-tide signal are derived under the condition of changing well radius. It is suggested that variation of well-radius is equivalent to the change of the effective height of the well-water column which affects the inherent vibration period of the well-water bearing system. The period characters of the response of the well-radius variation to the Earth-tide signal are analyzed. The results show that the effect of well-radius variation on the response of well-water level to the Earth-tide is very small,if the volume of water bearing system is very large and the coefficient of permeability of the system is also large.

Key words: Well water level, Earth tide, Well-water bearing system