土木分野におけるセンサ技術の利用と可能性(2)

[CS9-44] Confirmation of distributed vibration measurement performance using millimeter-wave high-speed imaging radar for tunnel face monitoring

〇IWAKI Hideaki¹, TADA Hiroyuki¹, NOHMI Hitoshi² (1.Shimizu Corporation, 2.Alouette Technology Inc.)

Keywords:Tunnel face, monitoring, Non-destructive measurement, millimeter wave, high speed imaging radar

The results of distributed vibration measurement performance using millimeter-wave high-speed imaging radar is confirmed. The radar is being developed as a measure to prevent casualties from falling rocks during tunnel construction. Vibration and displacement were applied to a part of a wall simulating a tunnel face, it was confirmed that the distribution of vibration amplitude and frequency (area measurement). The processing of the measurement error that occurred at the place where the displacement exceeding the radar wavelength occurred was considered as a future study, and the study for continuous measurement in the actual tunnel was further advanced.