摘要
平行管线是地下管线探测工作经常遇到的管网结构,由于其间距小于2倍埋深,存在电磁场的相互感应和叠加,使探测工作难度加大。在电磁法探测应用中,可分别观测磁场的水平分量H(x)、垂直分量H(z),根据其分量曲线特征判断地下管线的数量、位置及走向,进而确定其埋设深度。实践证明,为减小旁侧影响,避免其它电磁信号干挠,合理选择激发方式、激发位置对探测效果影响很大。
Parallel pipeline is a kind of pipeline network often encountered in underground pipeline detection, since its interval less than twice over depth of burial, made electromagnetic fields inducing and stacking one another caused detection very difficult. In electromagnetic detecting application, horizontal component （Hx） and vertical component （Hz） may be observed separately. According to component curve characteristics to determine underground pipeline quantity, location and trend, then proceed to determine their depth of burial. Practice demonstrated, to reduce lateral influence, avoid other electromagnetic signal disturbance, rationally select inducing mode and position have prodigious influence on detection effects.
出处
《中国煤田地质》
2005年第B06期89-90,共2页
Coal Geology of China
关键词
地下管线探测
平行管线
电磁感应
特征曲线
underground pipeline detection
parallel pipeline
electromagnetic induction
characteristic curve
