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Robert Harrington

There is a significant body of knowledge in relation to assessing the impacts of earthquakes on earth and rock fill dams which has led to a number of widely recognised and accepted methodologies for the calculation of potential deformations from an earthquake event. However, limited research has been conducted into the assessment of blasting impacts on earth structures. This has led to an adoption of earthquake analysis methods in the assessment of blasting impacts on earth structures without adequate consideration to the difference between the stresses and displacements imposed on an embankment as a result of a blast as opposed to an earthquake. Adopting earthquake analysis techniques may result in conservative vibration limits being imposed when undertaking blasting near embankment dams which may have negative financial impacts.

This paper explores the risks associated with blasting adjacent to earth fill dams and details the difference between stresses and displacements imposed on an embankment by a blast versus an earthquake.

This paper also discusses previously adopted approaches to assessing potential impacts associated with blasting and the limitations associated with adopting a pseudo-static and simplified permanent deformation analysis for blasts modelled as equivalent earthquakes. Finally, the paper proposes an alternate risk based analysis approach.

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  • $15.00
    2016  Papers

    2016 – Assessing Blasting Impacts on Embankment Dams: Limitations with Adopting an Equivalent Earthquake Approach

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    2017  Papers

    2017 – A Unique Experience with Liquefaction Assessment of Impounded Brown Coal Ash

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    2020  Papers

    2020 – Use of Conditional Mean Spectra with Minimum Magnitude less than 5 in Seismic Hazard Analysis

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    2021  Papers

    2021 – A generalised CPTu state parameter inversion method based on the NorSand Widget

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    2021  Papers

    2021 – Some considerations when using deformation monitoring to manage the static liquefaction risks of TSFs

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    2013  Papers

    2013 – Effects of earthquake design ground motions on the seismic response of upstream-raised tailings dams

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    2012  Papers

    2012 – Assessment of Liquefaction-induced Deformation of Tailings Dams using Effective Stress Analysis Approach

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    2012  Papers

    2012 – Seismic Induced Slope Displacement of a Tailings Embankment – Comparison of Numerical and Simplified Analysis Methods

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    2011  Papers

    2011 – Toorourrong Reservoir – Small Dam, Big Problems

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