GROUND DRILLING DEVICE AND GROUND INVESTIGATION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a ground drilling device and a ground investigation method that can insert a rod continuously in a rotational manner without requiring lifting and lowering a lifting unit, and that can improve work efficiency, the accuracy of ground data and safety.;SOLUTION: The ground drilling device is composed of a rod, a turntable, a drive device and a delivery device. The tip of the rod includes a ground investigation device with an excavation function, and the rod is inserted into an investigated ground. The turntable in a plate shape includes a through hole that is formed at the center part of the turntable and that the rod can penetrate. The drive device rotates the turntable. The delivery device is provided on the turntable and the rod can be installed therein. The delivery device can deliver the rod continuously with a predetermined load or at a predetermined delivery speed, and can lift the rod continuously with predetermined lifting force or at a predetermined lifting speed.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2019,JPO&INPIT