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Abstracts
Vol. 5:
Der Einfluß des Trennfugengefüges auf die Grundwasserströmung
in Kluftgrundwasserleitern
[The Influence of Fracture Joints on Groundwater Flow in Fissured Rock
Aquifers]
Bernhard Huber
Keywords: Triassic, joint aquifer, hydrodynamics, numeric modelling,
drinking-water protection areas
Abstract: Because of the geometrical complexity of its fracture joints,
fissured rock as opposed to soils represents a spatial heterogeneous and
anisotropic medium. The investigation methods used for flow processes
in soils can only be applied to aquifers in fissured rocks in exceptional
cases. The first theoretical part of this paper treats the determination
of hydrogeological parameters in joint aquifers and the assessment thereof
for calculating the size of drinking water protection areas by means of
evaluating specialized literature. As an applied example, the inflow of
two neighbouring well lines situated in the joint aquifer of the Eastern
Spessart's Lower and Middle Buntsandstein (Lower Triassic) will be examined.
Based on detailed tectonic investigations, a regional structural analysis
of geologic deformation and a hydrogeologic concept, an attempt will be
made to solve the question of inflow by means of a combined discontinuous-continuous
numeric 2-D model calculation. The computer controlled simulation of ground
water flow forms the basis for the calculation of zones II (inner protection
areas) of these groundwater developments.
Paper language: german; german abstract
volume out of print (copy available
on request)
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