天水地震台井下地电观测系统介绍及其分析*

(1.甘肃省地震局 天水中心地震台,甘肃 天水 741020; 2.甘肃省地震局,甘肃 兰州 730000)

井下观测; 地电观测; 地电阻率; 天水地震台

Introduction and Analysis of Geo-electrical Observation System in Underground Well at Tianshui Station
YANG Xing-yue,YANG Li-ming2,KANG Yun-sheng2,AN Hai-jing2,

(1.Tianshui Center Seismic Station,Earthquake Administration of Gansu Province,Tianshui 741020,Gansu,China)(2.Earthquake Administration of Gansu Province,Lanzhou 730000,Gansu,China)

underground well observation; geo-electrical observation; geo-electrical resistivity; Tianshui Station

备注

介绍了天水地震台井下地电观测系统场地布设方式、测项设计安装技术要求和施工要点,并对原有观测资料和新系统观测资料进行了对比分析。结果 显示:采用井下观测系统能减少干扰、提高信噪比,缓解地电观测用地与经济建设的矛盾,是地电观测方式的新探索。

We introduce the field layout,measuring items design,the installation technology specification and the construction essentials of geo-electrical observation system in underground well in Tianshui Station,then compare and analyze the observed data between original observation and new system.The result shows that application of the geo-electrical observation system in underground well can improve the signal-to-noise ratio and ease the confliction between the land of geo-electrical observation and the economic construction.Given the situation that the geo-electrical observation environment is interfered by economic construction increasingly,the geo-electrical resistivity observation in underground well is a new way.