Authors: Gray, I; Wood, J; Neels, B; O’Brien, A


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Gray, I, Wood, J, Neels, B & O’Brien, A 2013, 'The hydrogeology of a moving cut slope and real time modelling of groundwater movement', in PM Dight (ed.), Slope Stability 2013: Proceedings of the 2013 International Symposium on Slope Stability in Open Pit Mining and Civil Engineering, Australian Centre for Geomechanics, Perth, pp. 1131-1146,

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This paper covers the work undertaken to determine the behaviour of groundwater in a moving cut slope comprising fractured igneous rock overlying sedimentary deposits. The work was undertaken to provide part of a solution to the stabilisation of the slope through drainage. The work initially involved the installation of multiple piezometers and several pumping tests to determine the hydraulic conductivity and storage characteristics of the rock mass. Using this information a numerical model of the slope was created in which the time variant input was the piezometric head. Using the values of hydraulic conductivity and storage along with the varying piezometric information it was possible to determine where water was entering and leaving the slope during different weather events and to therefore optimise drainage design. The paper also describes the data acquisition and telemetry system developed and employed on this project and also some of the mathematics of drainage design. The paper also considers some drainage solutions to stabilise the slope more effectively than the cut and fill approach that has not yet succeeded.

Boulton, N.S. (1954) Unsteady residual flow to a pumped well allowing for delayed yield from storage, International Association of Hydrology, pub. 37.
Carman, P.C. (1937) Fluid flow through granular beds, Transactions of the Institution of Chemical Engineers, Institution of Chemical Engineers, London, Vol. 15, pp. 150–166.
Dake, L.P. (1978) Fundamentals of Reservoir Engineering, Developments in Petroleum Science, Elsevier, Vol. 8.
de Wiest, R.M. (1965) Geohydrology, John Wiley & Sons, Inc., New York.
Eden, R.N. and Hazel, C.P. (1973) Computer and graphical analysis of variable discharge pumping tests of wells, Civil Engineering Transactions, The Institution of Engineers Australia, pp. 5–10.
Gray, I. (1983) Factors influencing out bursting and gas drainage in underground coal mines, PhD Thesis, The University of New South Wales, Kensington.
Hazel, C.P. (1975) Groundwater Hydraulics, The Irrigation and Water Supply Commission, Queensland, Lectures.
Jacob, C.E. (1950) Flow of groundwater, in Engineering Hydraulics, H. Rouse (editor), John Wiley & Sons, Inc., New York, p. 346.
Kozeny, J. (1927) Ueber kapillare Leitung des Wassers im Boden, Akademie der Wissenschaft, Wien (about capillary transport of water in soil. Proceedings of Science Academy, Vienna), 136(2a), pp. 271–306.
Sternberg, Y.M. (1968) Simplified solution for variable rate pumping test, Journal of the Hydraulics Division, American Society of Chemical Engineers, Vol. 94(HY1), pp. 177–180.
Theis, C.V. (1935) The relation between the lowering of the piezometric surface and the rate and duration of discharge of a well using groundwater storage, American Geophysical Union Transactions, American Geophysical Union, Vol. 16, pp. 510–524.
van Everdingen, A.F. (1953) The skin effect and its impediment to fluid flow into a wellbore, Transactions AIME, American Institute of Mining, Metallurgical, and Petroleum Engineers, Vol. 198, pp. 171–176.
Wenzel, L.K. (1942) Methods for determining permeability of water-bearing materials with special reference to discharging-well methods, U.S. Geological Survey, Washington, D.C., Water-Supply Paper 887, 192 p.

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