TRENCH EXCAVATION METHOD AND ITS DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a trench excavation method capable of being carried out by a simple stage of works and its device even when a trench excavation is carried out between preceeding panels. SOLUTION: A rod equipped with an excavator having a plurality of jet nozzles is inserted into the ground, the rod is moved to the horizontal direction (lateral direction) by raising and lowering the excavator while jetting a jet from the nozzles, and the trench with a certain width is excavated.