海安地电台极区金属管道干扰的测试和分析

TEST AND ANALYSIS FOR METAL PIPE DISTURBANCE IN POLE AREA OF HAIAN GEOELECTRIC STATION

1999年 6月 5～ 8日海安地震台地电N6 0°E测向为ρs 值异常升幅 2 % ,而N30°W、N70°W两测向 ρs 值均处于正常年变化形态。经勘查、测试分析 ,确定为新埋设的地下自来水金属管道干扰所致。

On 5～8,Juny,1999, ρ s of geoelectric N60°E direction anomalously increases 2%, and ρ s of N30°W and N70°W directions is normal. The exploration and test indicat that this is caused by the interference of running water pipe. The interference mechanism is discussed.