井孔变径与井水位的固体潮效应  

WELL RADIUS VARIATIONS AND EARTH TIDE EFFECT OF WELL WATER LEVEL

作　　者：王尤培[1,2,3] 张昭栋[1,2,3] 王晓闽 胡怀玺[1,2,3] 曾念文 

机构地区：[1]山东省地震局 [2]山东建筑工程学院 [3]山东省莒南地震局

出　　处：《地震地质》1997年第3期281-287,共7页Seismology and Geology

摘　　要：根据多孔介质渗流理论和弹性理论，在井孔变径条件下，得出水井含水层系统对潮汐信号响应的偏微分方程，认为井径变化相当于改变了井水柱的有效高度，从而影响了水井含水层系统的固有振动周期。分析了井孔变径对潮汐信号响应的周期特征，认为当含水层水体很大（含水层水平面积比井孔面积大得多），且含水层的渗透系数也很大的条件下，井径变化对井水位固体潮响应幅度影响很小。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.

关 键 词：井水水位 固体潮 井孔变径 地震预报 

分 类 号：P315.7[天文地球—地震学]