Excavator forward exploration method and excavator

摘要

PROBLEM TO BE SOLVED: To specify the internal structure of an obstacle in an excavator. A forward search method for an excavator is provided. In this method, while rotating the cutter face plate, the jetting process of jetting the abrasive jet water containing the abrasive from the jet nozzle provided on the cutter face plate toward the front in the excavation direction and the jetting of the abrasive jet water are performed. And a detection step of detecting a reflected sound based on the above. [Selection diagram] Figure 1