福建永安井水位大幅度异常变化原因的研究
REASON FOR THE BIG ANOMALY OF WATER LEVEL IN YONGAN WELL
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摘要: 2001年7月18日起,永安井水位出现持续的大幅度上升变化。经调查落实,这是由于该井附近的另一口多年开采的井孔,于2001年7月17日突然停止抽水,从而使永安井的地下水补给量增大,造成水位大幅度上升。深入分析该井水位变化的成因,为研究邻井抽水对地震地下水动态观测井水位动态的影响提供了一个实例,对于识别地下水前兆异常与抽水干扰有一定的参考意义。Abstract: The water level of Yongan well showed a large degree of continuous increasing from July 18,2001.After investigation we found that the sudden stop of water pumping from another well nearby caused the water supply increasing.This study provided an example that water pumping affects groundwater level observation,which may be significant to distinguish groundwater anomalies from water pumping interference.