永安井水位大幅度异常成因的调查分析

2001年7月18日起,永安井水位出现了持续的大幅度上升的变化过程。经调查落实,这是由于该井附近的另一口并多年来的开采后,于2001年7月18日突然停止抽水,而使地下水的补给量增大,造成地下水大幅度上升。这对研究临近并抽水对地震地下水动态观测井的水位动态影响提供了实例,对区分深井地下水前兆异常与抽水干扰有一定的参考价值。

Investigation and analysis of a big anomaly of deep well Water level in Yongan studio

A Sharp upswing appeared in a deep well water level in Yongan from July to November 2001. By surveg-ing on site , we found that it was caused by stop - pumping water from another well near the Yongan seismic station in July 18,2001 and led to underground water level increase greatly. It provides us an observational case in situation for the inference of pumping water to observational water level, and is also useful to judge that is the precursory anomaly and pumping water effection in deep well water observation.