衡水冀16井水位异常变化调查与分析

摘要

On October 27, 2014 dynamic water-level of Heng Shui Ji No.16 Well rose suddenly and maintained high value change with step lift and drop. The depth of Heng Shui Ji No.16 Well is 1700.41 meters and its surging range is 0.0588 meters. Ever before this well never happened the above change. Is this abnormal change considered as the earthquake precursor anomaly? In order to determine the properties of this abnormal change, this article investigates and analyzes the abnormal change from such aspects as power supply system, observation instrument, comparative observation and environmental disturbance. We find finally that leak flow entrance drainage pool was closed which directly resulted in the abnormal change, and this abnormal change is not connected with the earthquake precursor anomaly. Anomaly variation mechanism is analyzed, and it also accumulates experience for the judgment on abnormal change of dynamic water-level.%衡水冀16井水位2014年10月27日突升之后并维持在高值变化，在高值变化的同时出现多次阶升阶降变化形态。此井井深为1700.41米，突升幅度为0.0588m，以前从未出现过上述情况，该异常变化是否是前兆异常？为了确定异常性质，从供电系统、观测仪器、对比观测、环境干扰等方面进行调查和分析，最终排查出是泄流口排水池堵塞造成水位变化，不是地震前兆异常，对异常变化机理进行初步分析，为判断水位异常变化积累了经验。