Consideration of the Quality Control Method for CSG Materials with ICT

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  • ISHII Takayuki
    大成建設(株)技術センター 生産技術開発部 ダム・地盤技術チーム
  • HATAKEYAMA Shunichi
    大成建設(株)技術センター 生産技術開発部 ダム・地盤技術チーム
  • KATAYAMA Saburo
    大成建設(株)技術センター 生産技術開発部 メカトロニクスチーム
  • ARAI Hiroyuki
    大成建設(株)土木本部 土木技術部 ダム技術室

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  • ICTを活用したCSG材品質管理手法の検討
  • ICT オ カツヨウ シタ CSGザイ ヒンシツ カンリ シュホウ ノ ケントウ

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<p>The sand and gravel which are materials of trapezoid CSG dams have quality fluctuation because they are uncontrolled raw materials. Therefore, it is necessary to monitor the material characteristics (grain distribution and surface water content) by laboratory tests. Then the authors had developed the automatic system that continuously monitors grain size of CSG materials by a digital image analysis technique and had verified its effectiveness by applying it to field crushed materials. On the other hand, since the surface water content of riverbed gravel is high due to many fine particles, and it is concerned that they effect the result of digital image analysis of grain distribution. Therefore, the authors newly developed automatic monitoring system for grain distribution and water content which combined digital image analysis and RI moisture meter measurement. Measurement of grain distribution is corrected by that of surface water quantity. Hence the system ensures the accuracy of grain distribution measurement for the material with high surface water quantity. This paper reports the result of basic experiment and field verification in applying the system to Sanru Dam (Kamikawa District, Hokkaido).</p>

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