Development and Site Application Cases of the Three-Dimensional Measurement System of Discontinuous Surface in the Tunnel Face

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  • 切羽における不連続面の3次元計測システムの開発と現場適用事例
  • セッパ ニ オケル フレンゾクメン ノ 3ジゲン ケイソク システム ノ カイハツ ト ゲンバ テキヨウ ジレイ

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The authors have been developing techniques to measure dip and strike of discontinuities at a tunnel face with three-dimensional scanners and photography. Regarding minimization of the technique's impact on the tunnel construction cycle as an important factor in promoting this method, they have explored measuring methods and systems which are most suitable even at the actual tunnel construction site.<br>This time, they will report the assessment of the measuring methods and systems they have developed so far, based on results from on-site applications. The outcomes resulting from this development would be effective not only as a technique for making quick safety assessments of a tunnel face, but also as a reference against which the ground of a tunnel under maintenance is assessed.

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