トンネル工法における前方異常物体の自動検知

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  • An Automatic Detection System for Anomalous Objects in Excavating Tunnels.
  • トンネル コウホウ ニ オケル ゼンポウ イジョウ ブッタイ ノ ジドウ ケン

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In excavating tunnels for subways or power cables, shield tunneling machines are used. The paper proposes a detection system, for the machines, which detects anomalous objects ahead, to prevent the cutters of the machines from getting damages and also to prevent the construction delay caused by the accident. The system uses one transmitting and several receiving transducers (both sonic) located on the cutter plane of the machines for getting information on the anomalous objects. To enable the system to be used on-line, the propagation from the input electrical signal to the output one through sonic wave is modeled by series combination of two second-order damped oscillation elements and one dead-time element.<br>Finally, the validity of the proposed system is demonstrated with experiments in an anechoic water tank and at a construction site.

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