Park Minsung, Ju Minseok, Kim Jungjoo, Jeong Hoyoung
Department of Energy Resources Engineering, Pukyong National University, Busan 48513, Republic of Korea.
Power System Research Laboratory, KEPCO Research Institute, KEPCO, Daejeon 34056, Republic of Korea.
Sensors (Basel). 2025 Mar 25;25(7):2045. doi: 10.3390/s25072045.
The TBM disc cutter, which is the main cutting tool of tunnel boring machines (TBMs), is replaced when it is excessively worn during the boring process. Disc cutters are usually monitored by workers at cutterhead chambers, and they check the status and wear of disc cutters. Manual measurement occasionally results in inaccurate measurement results. In order to overcome these limitations, real-time disc cutter monitoring techniques have been developed with different types of sensors. This study evaluates the distance measurement performance of an eddy-current sensor for measuring disc cutter wear via a series of laboratory experiments. This study focused on identifying the effects of various measurement environments on the sensor's accuracy. The study considered conditions that the eddy-current sensor may encounter in shield TBM chambers, including air, water, slurry, and excavated muck. Experiments were conducted using both a small-scale disc cutter and a 17-inch full-scale disc cutter. The results indicate that the eddy-current sensor can accurately measure the distance to the disc cutter within a specific range and that its performance remains unaffected by different measurement environments.
全断面隧道掘进机（TBM）的盘形滚刀是隧道掘进机的主要切削刀具，在掘进过程中过度磨损时需要更换。盘形滚刀通常由刀盘仓内的工人进行监测，他们检查盘形滚刀的状态和磨损情况。人工测量偶尔会导致测量结果不准确。为了克服这些局限性，已经开发了使用不同类型传感器的盘形滚刀实时监测技术。本研究通过一系列实验室实验评估了用于测量盘形滚刀磨损的涡流传感器的距离测量性能。本研究的重点是确定各种测量环境对传感器精度的影响。该研究考虑了涡流传感器在护盾式TBM刀盘仓中可能遇到的条件，包括空气、水、泥浆和挖掘出的渣土。实验使用了小型盘形滚刀和17英寸全尺寸盘形滚刀进行。结果表明，涡流传感器能够在特定范围内准确测量到盘形滚刀的距离，并且其性能不受不同测量环境的影响。
