Civil

Tunnel, Underground-cavern, Dam, Bridge, Elevated-railway, Slope, Port, Airport

　

- Acoustic Emission for micro crack
- Vibration monitor by accelerometer and seismometer
- Stress measurement (over-coring)
- Micro-wave Displacement measurement

Methods

AE (FOD and PZT), Vibration, Earthquake, Hydrophone, Strain measurement
More details about methods >>

Published Papers >>

Work Records

- AE Monitoring of rock structure during excavation at Underground LPG Storage, Namikata, Japan (2006 -)
With embedded AE sensors (FOD and PZT) near underground cavern...
- Stress measurement of underground cavern by over-coring (2005 -)
With over-coring method which utilizes a molded strain gauge, stress analysis...
- AE measurement of rock destruction test (2002 -)
Obtain rock strength data, from sample core extracted at site...