Developing an early warning system for a very slow landslide based on displacement monitoring

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• 作者：Renato Macciotta ; Michael Hendry ; C. Derek Martin
• 关键词：Landslide ; Landslide monitoring ; Early warning ; Hazard management
• 刊名：Natural Hazards
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：81
• 期：2
• 页码：887-907
• 全文大小：4,136 KB
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• 作者单位：Renato Macciotta (1)
  Michael Hendry (2)
  C. Derek Martin (3)
  
  1. Department of Civil and Environmental Engineering, University of Alberta, 6-332 Donadeo Innovation Centre for Engineering, Edmonton, AB, T6G 1H7, Canada
  2. Department of Civil and Environmental Engineering, University of Alberta, 6-263 Donadeo Innovation Centre for Engineering, Edmonton, AB, T6G 1H7, Canada
  3. Department of Civil and Environmental Engineering, University of Alberta, 6-224 Donadeo Innovation Centre for Engineering, Edmonton, AB, T6G 1H7, Canada
  
• 刊物类别：Earth and Environmental Science
• 刊物主题：Earth sciences
  Hydrogeology
  Geophysics and Geodesy
  Geotechnical Engineering
  Civil Engineering
  Environmental Management
  
• 出版者：Springer Netherlands
• ISSN：1573-0840

文摘

The Ripley Landslide is a soil slide moving on a fully developed, sub-horizontal, shear surface. The landslide represents a hazard for two important railway lines across its toe. The landslide is being monitored by an array of displacement measurement systems including GPS units, a ShapeAccelArray (SAA), satellite InSAR, and crack extension metres, as well as an array of piezometers targeting pore water pressures in the vicinity of the shear surface. The displacement monitoring system shows an annual cycle of slope deformations most active between September and May. Annual horizontal displacements range between 60 and 100 mm. Vertical displacements range between 20 and 80 mm of settlement. The average horizontal velocities during the active displacement period are between 0.2 and 0.35 mm/day, with maximum velocities of up to 0.6 mm/day. This paper describes the development of an early warning system based on landslide displacement measurements. The system is based on GPS and SAA measurements, which provide near real-time displacement data. The early warning system focuses on detecting changes in landslide annual displacement cycles and potential accelerations, as well as the effects of slope deformation on the railway alignment. As such, the system monitors both the integrity and performance of the slope. Keywords Landslide Landslide monitoring Early warning Hazard management