By
the end of today's class, you
should be able to do the following:
v Flow Nets
- Read
hydraulic head values in piezometers and use them to
construct a flow net.
- Tell
what the angular relationship is between flow lines and equipotential
lines (hydraulic head contours).
- Identify boundaries
to a flow system:
- no-flow
(impermeable) boundaries
- water
table boundary
- constant
head
boundaries
- constant flow
boundaries (rarely used in modeling
natural systems).
- For
the first three types of boundary listed above, tell the relationship
of flow lines
to that boundary. Then tell the relationship of equipotential lines
(hydraulic head contours) to that boundary.
- List
the steps to follow in drawing a flow net, and demonstrate that you
know how to follow them.
- Use
a flow net to calculate discharge through a segment of earth material
such as an aquifer or aquitard.
v Darcy's Law
- Use
Darcy's Law to calculate flow through an area illustrated on a cross
sectional flow net.
v Properties of Porous Materials
- Explain what the
specific yield tells us about how much water can drain from a volume of
rock or sediment.
- Apply the definition
of specific yield to a given area to calculate water quantities that
can be drained.
|
Department
of Earth Science |
Northeastern
Illinois University
