【摘要】 针对2011年芜湖皖28井水位破年变异常,系统梳理该井相关资料,利用水位变幅、相关性分析及相对变差率进行分析。结果表明,该项异常信度较高,反映区域构造活动信息,是周边几次中等强度地震的共同前兆。通过剩余曲线、从属函数等数学方法,对该井历年水位观测数据进行异常识别。研究表明,该井水位异常主要表现为短期异常特征,与该井孔西北、西南侧中等地震有较好的对应关系。更多还原

【Abstract】 For understanding the anomaly of weter level which is breaking though the annual variance at Wuhu No.28 well in Anhui Province in 2011,the relevant information about the well is reviewed.The correlation analysis on amplitude variance of water level and relative variation ratio shows that the abnormal is higher reliability,which reflects the regional tectonic activity information,and simultaneously,is a common precursor of several moderate earthquakes in its surrounding area.Subsequently,through the mathematical method of residual curve and subordinate function,the abnormities of water level in the observation data at this well over years are recognized.Our research shows that the water level anomalies are mainly of shortterm anomalies and there is a good corresponding relationship with the medium earthquakes surrounding the borehole in the northwest and southwest side.更多还原