公开(公告)号：US09932812B2

公开(公告)日：2018-04-03

申请号：US14649715

申请日：2013-11-12

Applicant: HITACHI ZOSEN CORPORATION

Inventor： Katsuya Sasaki ,  Keitaro Hidani ,  Kohei Takatori ,  Takuya Miwa

IPC: E21B44/00 ,  E21B45/00 ,  E21D9/06 ,  E21B47/09 ,  G01H17/00 ,  G01M99/00 ,  G01H1/00 ,  G01H3/00 ,  E21D9/093

CPC classification number: E21B45/00 ,  E21B47/09 ,  E21D9/06 ,  E21D9/093 ,  G01H1/00 ,  G01H3/00 ,  G01H17/00 ,  G01M99/005

Abstract: An excavation status monitoring system for a tunneling machine that includes a detecting portion mounted on a cutter head of the tunneling machine, including an accelerometer that detects a vibration or an acoustic sensor that detects a sound wave and a sound output portion that outputs a signal detected by the detecting portion as sound.