This paper introduces the high-density electrical method and fretting technology,and carries out fretting test in tunnels in detailed investigation area to determine the effectiveness and suitability of the new fretting method.The high-density electrical survey profile is arranged along the exploration line,karst anomalies are delineated,and fretting detection work is carried out in key areas.The pseudo-velocity Vx profile is obtained by using single-point dispersion curve.The comprehensive interpretation of karst position is consistent with the actual karst depth exposed by drilling,and the coincidence degree is high,which verifies the effectiveness of high-density electrical method combined with fretting detection method in karst detection.
关键词
高密度电法/微动探测/拟速度剖面/岩溶识别
Key words
high density electrical method/micro motion detection/quasi-velocity profile/karst identification
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