孔—巷瞬变电磁隧道不良地质体超前预报方法研究

李贺, 李貅, 戚志鹏, 曹华科

Seismic prediction of unfavorable geobodies in tunnels using the borehole-roadway transient electromagnetic method

LI He, LI Xiu, QI Zhi-Peng, CAO Hua-Ke

图4 (2,2,0)点的电磁场相对异常曲线

Fig.4 Relative anomaly curves of electric and magnetic fields at measuring points (2,2,0)