江宁地电台深井地电阻率观测系统分析

Introduction and analysis of geo-electrical observation system at Jiangning Deep Borehole Geoelectric Station

江宁地电台在原址开展地电观测抗干扰保护工程,采取缩短极距和电极深埋来减轻地铁和蔬菜大棚的影响。本文介绍了江宁地电台深井地电阻率观测系统场地布设方式、安装技术要求和施工要点,并讨论深井观测存在的问题。通过分析试运行1年的深井地电阻率观测数据,发现采用深井观测可减少干扰、缓解地电观测与经济建设的矛盾,是地电观测的重要发展方向之一。

The new arrangement of buried electrode resistivity is put forward to the relocation of Jiangning site. This scheme adopts shortening the current distance and using deeply buried electrode to suppress the interference from subway and green house. We introduce the field layout, measuring items design, the installation technology specification and the construction essentials of Jiangning Deep Borehole Geoelectric Station. The problems existing in the construction are discussed. By analyzing the resistivity data from 2015 to 2016. The result shows that application of the geoelectrical observation system in deep borehole can improve the signal-to-noise ratio and ease the confliction between the land of geo electrical observation and the economic construction. The geoelectrical resistivity observation in deep borehole is new promising way.