Enhancement of monitoring safety by improving real-time GPS displacement measurements

• Project/Area Number: 25350506
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Natural disaster / Disaster prevention science
• Research Institution: Yamaguchi University
• Principal Investigator: Norikazu SHIMIZU 山口大学, 理工学研究科, 教授 (70150357)
• Co-Investigator(Kenkyū-buntansha): NAKASHIMA Shinichiro 山口大学, 大学院理工学研究科, 助教 (70346089)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000); Fiscal Year 2015: ¥130,000 (Direct Cost: ¥100,000、Indirect Cost: ¥30,000); Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2013: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
• Keywords: GPS / 3次元変位計測 / キネマティック計測 / 安全監視 / センサー開発 / 高精度 / 地盤変位計測 / 斜面安定

Outline of Final Research Achievements

The purpose of this research is to enhance the real-time monitoring property of the GPS displacement monitoring system and to develop a procedure for monitoring displacements immediately after a ground disaster has occurred due to heavy rain or an earthquake. A system using GPS was developed for monitoring three dimensional displacements with millimeter accuracy, and the kinematic method was applied to the system to improve the resolution of the measurement interval. The possibility of developing a low cost sensor was also investigated.

Research Products

• [Journal Article] ISRM Suggested Method for Monitoring Rock Displacements Using Global Positioning System (2014)
  • Author(s): Shimizu, N., S. Nakashima and T. Masunari
  • Journal Title: Rock Mechanics and Rock Engineering Volume: 47 Issue: 1 Pages: 313-328
  • DOI: 10.1007/s00603-013-0521-5
  • Peer Reviewed
• [Presentation] 急傾斜斜面に対するGPS変位計測システムの適用事例（その3） (2015)
  • Author(s): 林佑一郎，古山陽太，中島伸一郎，清水則一，福井雄二
  • Organizer: 土木学会第70回年次学術講演会
  • Place of Presentation: 岡山大学 津島キャンパス（岡山県岡山市）
  • Year and Date: 2015-09-16
• [Presentation] 新しいGPS変位計測センサーの開発（その2） (2015)
  • Author(s): 寺田脩作，中島伸一郎，清水則一，武石朗，増成友宏
  • Organizer: 土木学会第70回年次学術講演会
  • Place of Presentation: 岡山大学 津島キャンパス（岡山県岡山市）
  • Year and Date: 2015-09-16
• [Presentation] 急傾斜斜面に対するGPS変位計測システムの適用事例（その4） (2015)
  • Author(s): 林佑一郎，古山陽太，中島伸一郎，清水則一
  • Organizer: 第36回西日本岩盤工学シンポジウム・第2回岩石力学・岩盤工学に関する若手研究者会議
  • Place of Presentation: 火の国ハイツ（熊本県熊本市）
  • Year and Date: 2015-09-04
• [Presentation] 新しいGPS変位計測センサーの開発 (2015)
  • Author(s): 寺田脩作，中島伸一郎，清水則一，武石朗，増成友宏
  • Organizer: 平成27年度土木学会中国支部研究発表会
  • Place of Presentation: 山口大学工学部（山口県宇部市）
  • Year and Date: 2015-05-22
• [Presentation] 急傾斜斜面に対するGPS変位計測システムの適用事例（その2） (2015)
  • Author(s): 林佑一郎，古山陽太，中島伸一郎，清水則一，福井雄二
  • Organizer: 平成27年度土木学会中国支部研究発表会
  • Place of Presentation: 山口大学工学部（山口県宇部市）
  • Year and Date: 2015-05-22
• [Presentation] Rock Displacement Monitoring using Satellite Technologies-GPS and InSAR (2015)
  • Author(s): N. Shimizu
  • Organizer: Vietrock2015- ISRM specialized conference
  • Place of Presentation: Hanoi, Vietnam
  • Year and Date: 2015-03-12 – 2015-03-13
  • Invited
• [Presentation] Displacement Monitoring of a Rockfill Dam Before, During and After The Great East Japan Earthquake Using GPS (2014)
  • Author(s): T. Kobori, Y. Yamaguchi, S. Nakashima and N. Shimizu
  • Organizer: 2014 IRSM International Symposium - 8th Asian Rock Mechanics Symposium (ARMS8)
  • Place of Presentation: ロイトン札幌（札幌市）
  • Year and Date: 2014-10-14 – 2014-10-16
• [Presentation] Monitoring the Stability of a Large-scale Colluvium Deposited by Slope Failures due to Heavy Rainfall Using a GPS Automatic Monitoring System (2014)
  • Author(s): W. Satoh, T. Iwasaki, W. Sakurai, A. Fujii and N. Shimizu
  • Organizer: 2014 IRSM International Symposium - 8th Asian Rock Mechanics Symposium (ARMS8)
  • Place of Presentation: ロイトン札幌（札幌市）
  • Year and Date: 2014-10-14 – 2014-10-16
• [Presentation] Application of the GPS Displacement Monitoring System for the Preventive Maintenance of a Cut Slope along a National Expressway - a Case Study (2014)
  • Author(s): M. Shitano, T. Murakami and N. Shimizu
  • Organizer: 2014 IRSM International Symposium - 8th Asian Rock Mechanics Symposium (ARMS8)
  • Place of Presentation: ロイトン札幌（札幌市）
  • Year and Date: 2014-10-14 – 2014-10-16
• [Presentation] Case Studies on Landslide Monitoring Using the GPS Displacement Monitoring System (2014)
  • Author(s): S. Tosa, T. Yamasaki, K. Ito, T. Suganuma, N. Oikawa, A. Takeishi and N. Shimizu
  • Organizer: 2014 IRSM International Symposium - 8th Asian Rock Mechanics Symposium (ARMS8)
  • Place of Presentation: ロイトン札幌（札幌市）
  • Year and Date: 2014-10-14 – 2014-10-16
• [Presentation] Displacement monitoring using GPS for assessing stability of unstable steep slope by means of ISRM suggested method (2014)
  • Author(s): Y. Furuyama, S. Nakashima and N. Shimizu
  • Organizer: 2014 IRSM International Symposium - 8th Asian Rock Mechanics Symposium (ARMS8)
  • Place of Presentation: ロイトン札幌（札幌市）
  • Year and Date: 2014-10-14 – 2014-10-16
• [Presentation] Real-time displacement monitoring using GPS for assessing slope stability (2014)
  • Author(s): Shimizu, N., Nakashima, S. and Furuyama, Y
  • Organizer: EUROCK2014- Rock Engineering and Rock Mechanics: Structures in and on Rock Masses
  • Place of Presentation: Vigo, Spain
  • Year and Date: 2014-05-27 – 2014-05-29
• [Presentation] 急傾斜長大斜面におけるGPS変位計測の高精度化とその事例 (2013)
  • Author(s): 古山陽太，中島伸一郎，清水則一
  • Organizer: 第34回西日本岩盤工学シンポジウム
  • Place of Presentation: 九州大学伊都キャンパス(福岡市)