摘要
安丘地热井地处安丘—莒县断裂带西侧,距断层仅700 m。采用Piper三线图与Na-K-Mg三角图方法,分析该地热井的水化学特征及氢氧稳定同位素分布。结果表明,该井具有显著的深部水特征。通过对该地热井井孔水温梯度及1个月试验观测数据质量进行分析,结果显示:该井静水位固体潮清晰,数据可靠,井内存在水温异常区及导水通道,表明其具备良好的应力应变响应能力,能有效捕捉地壳变形与深部断层活动信息。作为流体观测井,安丘地热井可为地震预测研究提供可靠的数据支持。
The Anqiu geothermal well is located on the west side of the Anqiu-Juxian fault zone,only 700 m away from the fault.The Piper trilinear diagram and Na-K-Mg triangular diagram methods were used to analyze the hydrochemical characteristics and the distribution of hydrogen and oxygen stable isotopes of this geothermal well.The results show that the well has significant deep water characteristics.Through the analysis of the borehole temperature gradient of the Anqiu geothermal well and the data quality from one-month test observations,the results show that:the static water level solid tide of this well is clear,the data are reliable,and there are water temperature anomalies and water conduction channels in the well,which indicate that it has a good capacity of stress-strain response,and it can effectively capture the information of the crustal deformation and the activity of deep faults.As a fluid observation well,the Anqiu geothermal well can provide reliable data support for seismic prediction research.
作者
韩博
董敏
闫德桥
张辉
郑家军
杨立涛
熊玮
刘玉针
HAN Bo;DONG Min;YAN Deqiao;ZHANG Hui;ZHENG Jiajun;YANG Litao;XIONG Wei;LIU Yuzhen(Weifang Earthquake Monitoring Center Station,Shandong Province 261000,China)
出处
《地震地磁观测与研究》
2025年第3期82-87,共6页
Seismological and Geomagnetic Observation and Research
关键词
地下流体
观测井
地震监测
subsurface fluid
observation well
earthquake monitoring
