Japan Society of Civil Engineers 2019 Annual Meeting

Presentation information

第VI部門

山岳トンネル (13)

Wed. Sep 4, 2019 10:25 AM - 11:55 AM VI-12 (幸町総合教育棟 第31大講義室)

座長:石田 滋樹(中電技術コンサルタント)

[VI-469] The Evaluation of Rock Mass by the Image Analysis of Tunnel Face using Fractal Dimension (In the Case of Cenozoic Quaternary Volcanic Rocks)

*宇田川 義夫1、伊藤 由明1、押村 嘉人1 (1. 株式会社フジタ)

Keywords:Mountain Tunnel, Tunnel Face, Image Analysis, Fractal, Mathematical Quantification theory class Ⅰ

Geological evaluation of tunnel face rock is very important from the point of disaster prevention and economic construction of the tunnel, and a system to evaluate the geological situation objectively and quickly is needed. In this study, the rock quality is evaluated by image processing and fractal dimension analysis as a method to evaluate the geological condition of the tunnel face rock quickly, simply and objectively, focusing on the fractal characteristics of the crack distribution in the rock. Moreover, according to the quantification theory class 1, each item of the face evaluation point was analyzed as an independent variable and a fractal dimension as a dependent variable for each rock type.

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