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Tunnel boring machine

  • US 9,957,796 B2
  • Filed: 01/20/2016
  • Issued: 05/01/2018
  • Est. Priority Date: 03/24/2015
  • Status: Active Grant
First Claim
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1. A tunnel boring machine, comprising:

  • a cutter head;

    a cutter support supporting the cutter head and configured to rotate with the cutter head;

    a cutter driving unit for rotationally driving the cutter head and the cutter support;

    a rotational angle sensing unit for sensing a rotational angle of the cutter head;

    a strain sensor provided in the cutter head or the cutter support; and

    a data processing unit for obtaining measurement data (F) of a force acting on the cutter head, based on a measurement result of the strain sensor,wherein the data processing unit is configured to obtain error data (Er) based on a current measurement value (Vp) of the strain sensor obtained at a current angle (θ

    ) of the cutter head and a past corresponding measurement value (Vo) obtained at a rotational angle corresponding to the current angle, to correct the current measurement data using the error data.

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