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BOX-MODEL. A MODELING TOOL FOR WATER MANAGEMENT AT UNDERGROUND MINES AND STRONGLY INHOMOGENEOUS GROUNDWATER SYSTEMS

AUTHOR/S: ECKART, M., H. PICKEL, H TOMSCHI, W. UNLAND
Sunday 1 August 2010 by Libadmin2001

1st International Scientific Conference - SGEM2001, www.sgem.org, SGEM2001 Conference Proceedings/ ISBN: 954-918181-2, June 3-9, 2001, 215- 224pp

ABSTRACT

Numerical modeling of water flow has developed to a standard in surface water and
groundwater operations. Modeling of water flow in underground mines requires a special
approach due to interlinked cavities. The same principle problem occurs in strongly jointed,
inhomogeneous groundwater systems, like karst or jointed systems with a statistically well
defined structural pattern. The key to simulate hydraulic processes in such environments is the
reduction of model-balance-cells, following the requirements of the flow field. Properties of
boxes can be determined from readily available mining documentation. By means of standard
CAD applications and data processing an excellent multi-purpose data base is created.
The theory and simplifications of a box-model are described. The various types of hydraulic
connection between boxes are reflected by the conductance (m2/s) which can be calculated from
measured parameters.
The successful application of box-models is quoted from three mines where ecological
requirements demand a sophisticated prognosis of the environmental impact of mine closures.
For partial or complete flooding of larger underground mines box-models facilitate compilation
of many data and provide an excellent planning tool for alternate scenarios of water
management.

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