主动源面波采集装置改进及在地铁施工勘察中的应用

秦长春, 王国顺, 李婧

Improvement in active-source surface wave acquisition device and its application in subway construction exploration

QIN Chang-Chun, WANG Guo-Shun, LI Jing

图6 穿心重锤

Fig.6 Perforated heavy hammer