Visualization of Seepage Flow (SMT-FM-48)

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Visualisation of two-dimensional seepage flows and
investigation of water pressure at various models.
Closed water circuit.
Fluorescein as a contrast medium.
Experimental section with tempered glass viewing window.
Fine-mesh screen to separate the experimental section
from the feed and discharge chamber.
Height-adjustable overflows in the feed and discharge to
adjust the water levels.
12 measuring connections with filters to detect the
groundwater levels in the experimental section.
“Sheet pile” model for visualisation of streamlines.
“Retaining wall” and “foundation” models for
demonstration of the water pressure.
Instruments: tube manometers, tubes on the “foundation”
and “retaining wall” models.

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A descriptive method in the study of seepage and groundwater flow is the visualisation of the
streamlines and their graphical representation as a flow net. The flow net provides
information about the seepage of water in dams and sheet piles. SMT-FM-48 can be used to
visualise streamlines in seepage and groundwater flow on different models using a contrast
medium. Furthermore, the effects of water pressure on different structures are displayed as
pressure curves. The trainer consists of a transparent tank with a sand filling. Various models
can be placed in the sand bed to demonstrate typical structures. The experimental section is
separated from the feed and discharge chambers by fine mesh screens. A valve is used to
adjust the water supply. Using a contrast medium it is possible to make streamlines visible,
as they occur in seepage and groundwater flow. A tempered glass viewing window allows for
optimal observation of the experiments. Various models allow an extensive range of
experiments, such as pressure distribution on retaining walls or seepage and groundwater
flow under sheet piles. The “foundation” and “retaining wall” models are equipped with
tubes to show the pressures on the models. In the experimental section there are measuring
connections to detect groundwater levels. Groundwater levels are displayed on 12 tube
manometers. SMT-FM-48 contains a closed water circuit with storage tank and pump.