A DRILLING SYSTEM AND A DRILLING METHOD THEREOF

摘要

PURPOSE: An excavation system and an excavation method using the same are provided to enable excavation under a caisson that is larger than the outer diameter of the caisson. CONSTITUTION: An excavation system comprises a main body member and an excavation unit(50). The main body member forms a body. The excavation unit is mounted in the main body member to move up and down and enables excavation with horizontally adjusting width.