THREE-DIMENSIONAL SURVEY METHOD USING S-WAVE, S-WAVE EARTHQUAKE-GENERATING DEVICE, AND THREE-DIMENSIONAL SURVEY DEVICE

PROBLEM TO BE SOLVED: To improve a work efficiency, and to reduce cost, while maintaining a survey accuracy similarly or higher, in three-dimensional S-wave reflection method survey. SOLUTION: In this three-dimensional survey device using an S-wave, a belt type geophone group 13 having four receiving lines is used. In the belt type geophone group 13, geophone units 30 are installed at intervals of 0.5m, and the geophones 30 are installed in an approximately grid shape. The number of points for earthquake generation is three. In this S-wave earthquake-generating device 100, symmetrical reverse impact forces are applied to an earthquake-generating plate from two directions on the right and left oblique upsides by two air knockers, and S-wave vibration is transmitted to the ground surface by the earthquake-generating plate. Received data of a reflected wave of the S-wave received by the geophones 30 are collected by a data collection device 11 and analyzed. The device is equipped with a traction device (for example, a small-sized backhoe 40) for developing and moving the belt type geophone group 13. COPYRIGHT: (C)2006,JPO&NCIPI