Accuracy of Displacement Monitoring of Large Slopes by Using GPS

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  • MATSUDA Hiroaki
    Graduate School of Science and Engineering, Yamaguchi University
  • SHIMIZU Norikazu
    Faculty of Engineering, Yamaguchi University
  • YOSHITOMI Isao
    SYUHO MINING CO., LTD
  • KAWAHATA Kazuhiro
    Study Committee on Slope Stability and Environmental Preservation in Chichibu Area (Zanpeki Kenkyukai)
  • CHIBA Toshihiro
    Study Committee on Slope Stability and Environmental Preservation in Chichibu Area (Zanpeki Kenkyukai)
  • TONSYO Motohiro
    Study Committee on Slope Stability and Environmental Preservation in Chichibu Area (Zanpeki Kenkyukai)

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Other Title
  • ＧＰＳによる長大斜面の変位計測の精度について
  • GPS ニ ヨル チョウダイ シャメン ノ ヘンイ ケイソク ノ セイド ニ ツイテ

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Abstract

A displacement monitoring system has been developed using the Global Positioning System. It has been applied to large slopes of limestone quarries, landslide slopes to monitor the slope stability. The system can measure the three dimensional displacements continuously and automatically. The accuracy of measurements is beyond the standard one of the GPS by applying the trend model to the measurement results.<BR>This paper focuses on two topics. One is long-term continuous monitoring and the other is monitoring under the condition of the high height difference between the measurement points. The errors and the periodic characteristics of the measurement results are discussed through case studies. And then the standard deviation is shown in the relation to the distance and the height difference between measurement points. It will be available for planning the displacement measurement using GPS.

Journal

  • Shigen-to-Sozai

    Shigen-to-Sozai 119 (6/7), 389-395, 2003

    The Mining and Materials Processing Institute of Japan

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