Wireless MEMS-based system for real-time geotechnical instrumentation of active slopes

T. Abdoun, V. Bennett, S. Thevanayagam, R. Dobry, T. Shantz, D. Jang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Landslides, lateral spreading and other similar forms of ground failures due to natural disasters, such as heavy rains, floods and earthquakes, continue to be catastrophic events with extreme economic and societal costs, despite our increased understanding of the mechanisms of failure and large ground deformation, primarily because these events occur without much warning. Realtime monitoring programs are essential to develop warning systems of impending danger from active landslides in any site specific or regional hazard program. Unfortunately the current state-of-the-art in real-time monitoring of active slopes is either based on very expensive monitoring systems or on measurement of ground surface displacements. The work presented in this paper is a major step in the direction of establishing autonomous monitoring technology for soil and soil-structure systems. The MEMS-based in-place inclinometer system, ShapeAccelArray (SAA), is capable of simultaneously measuring 3D soil acceleration and 3D permanent ground deformation up to a depth of one hundred meters, with an accuracy of ±1.5mm per 30m. Each sensor array is connected to a wireless sensor node to enable real-time monitoring as well as remote sensor configuration. This paper presents a brief description of the design of this sensor array and results from full-scale liquefaction and lateral spreading testing, as well as preliminary results from field tests of an active slope in California aimed at validating the measured accelerations and displacements.

Original languageEnglish (US)
Title of host publicationSafety and Security Engineering III
Pages617-624
Number of pages8
DOIs
StatePublished - 2009
Event3rd International Conference on Safety and Security Engineering, SAFE 2009 - Rome, Italy
Duration: Jul 1 2009Jul 3 2009

Publication series

NameWIT Transactions on the Built Environment
Volume108
ISSN (Print)1743-3509

Other

Other3rd International Conference on Safety and Security Engineering, SAFE 2009
CountryItaly
CityRome
Period7/1/097/3/09

Keywords

  • Early warning
  • Instrumentation
  • MEMS
  • Sensor array

ASJC Scopus subject areas

  • Architecture
  • Civil and Structural Engineering
  • Building and Construction
  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Arts and Humanities (miscellaneous)
  • Transportation
  • Safety Research
  • Computer Science Applications

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