Authors: Swarbrick, GE; Clarke, SJ


DOI https://doi.org/10.36487/ACG_rep/1508_10_Swarbrick

Cite As:
Swarbrick, GE & Clarke, SJ 2015, 'Shape Accel Arrays — comparative performance in a mining application', in PM Dight (ed.), Proceedings of the Ninth Symposium on Field Measurements in Geomechanics, Australian Centre for Geomechanics, Perth, pp. 195-206, https://doi.org/10.36487/ACG_rep/1508_10_Swarbrick

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Abstract:
Shape Accel Arrays (SAAs) are being increasingly used to monitor in-ground movements at a relatively high frequency of interrogation (typically minutes). While there are significant benefits in the use of SAAs over traditional manually operated inclinometers, there remain a number of potential issues and drawbacks. Recently, an SAA was installed alongside a standard manual inclinometer installation to monitor ground movement below critical infrastructure. The instruments were used to monitor potential movements due to nearby mining. Results from both systems have been compared on a monthly basis for the past two years. During this time a number of issues were observed within the SAA results, these being false deformation, instrument drift and temperature effects. This paper describes the design, construction and monitoring of the instruments, issues encountered, and the methods employed to rectify or minimise the impact of these shortcomings. The instrument continues to provide necessary advance warning on mining induced movements.

References:
Dasenbrock, D, Abdoun, T & Bennett, V 2011, ‘Real-time structural health monitoring of landslides and geotechnical assets with ShapeAccelArrays’, in J Han & DE Alzamora (eds), Proceedings of Geo-Frontiers 2011: Advances in Geotechnical Engineering, American Society of Civil Engineers, Reston, VA, pp. 1585-1594.
Hebblewhite, BK 2001, Regional horizontal movements associated with longwall mining’, Proceedings of the MSTS 5th Triennial Conference on Coal Mine Subsidence, Mine Subsidence Technological Society, pp. 113-122.
Lipscombe, R, Carter, C, Perkins, O, Guerrero, S & Thurlow, P 2014, ‘The use of Shape Accel Arrays (SAAs) for measuring retaining wall deflection’, Proceedings of the 39th Annual Conference on Deep Foundations, Deep Foundations Institute, Hawthorne, New Jersey, 15 p.
Pitilakis, K, Anastasiadis, A, Pitilakis, D & Rovithis, E 2013, ‘Full-scale testing of a model structure in Euroseistest to study soil-foundation-structure interaction’, in M Papadrakakis, V Papadopoulos & V Plevris (eds), Proceedings of the 4th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, ECCOMAS, Barcelona pp. 1175-1188.




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