摘要
通过对含山井水位动态在井孔改造前后的变化进行对比分析,认为该井多年来记录到水位的特异动态与井孔结构有关。受井管变径影响,一次较大地震的水位振荡使水位急剧升降并产生不均匀变化。井径大小一致,则水位的振荡不受变径阻力影响,振荡均匀,记录对称、同时发现安徽井网中其他井的水位动态也存在类似情况。因此,某些井水位的特异动态作为异常形态或预报指标,有待进一步深入研究。
In this paper, we compare and analyse the behaviors of the water level before and after Hanshan well was remade, and suggest that the peculiar behaviors of water level of this well recorded in recent years are related to the borehole structure. Under the effect of diameter changes of borepipe, the water level oscillation due to a large earthquake can cause steep rise and drop of water level, which must lead to its inhomogeneous changes. If the well diameters are uniform, the water level oscillation is not affected by resistance due to diameter change, then the oscillation is homogeneous and record is symmetrical. It is also found that the level behaviors of other wells in Anhui well network are similar to those of Hanshan well. Therefore, it is necessary to further study whether the peculiar behavours of water level of some wells are regarded as anomaly behavours or prediction criteria.
出处
《地震》
CSCD
北大核心
1995年第3期285-290,共6页
Earthquake
关键词
地震预报
特异动态
井孔结构
地下水
水位
Groundwater level, Single well anomaly, Peculiar behavior, Borehole structure
