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坑道聚焦直流激电法电流场分布特性及探测影响因素分析
赵军1(), 孟欣佳2, 李冰2, 刘志民2
Current field distribution characteristics and detection influencing factors of the focusing DC IP method for tunnels
ZHAO Jun1(), MENG Xin-Jia2, LI Bing2, LIU Zhi-Min2

图6. 坑道掘进断面面积影响

Fig.6. Influence of tunnel excavation cross-section area