Institut za rudarstvo i metalurgiju Bor

In morphological terms, the terrain is
a plateau of younger river terrace (t1) from
the river Sava River with heights of 79.0
to 84.5 m above sea level. The terrace cur,
height about 4.0–5.0 m, is extended on the
plateau background that is also the boundary
of prospecting area. In the southeastern
part of the cut is a natural slope, disguised
with technogenic work, and the
sizes of the slope are over 20 0 . The slope
size in the central part is 15–20 0 , and in
the southwestern part up to 10 0
Other morphological form that dominates
in this area and has the greatest importance
for future facilities is the right
riverside of the river Sava. The final area of
eastern part of the space around the coast
has height from 3.0 to 3.5 m with estimated
slope of 1:1,5-1:2. Elevation of the coast
decreases towards the bridge over the river
Sava, so the terrain within the bridge in the
area is flat with slope of about 7 0 .
The terrain natural morphology embankment
that extends from direction of
water intake facility on the coast of the
river Sava towards the municipality building.
Dike was built for the installation of
pipelines for which it is unknown that was
in operation. Height of embankment is
about 1.0 to 2.0 m, so prospecting area is
divided into two units.
In the geological structure of terrain,
to the prospecting depth of about
12.0 m, the technogenetic formations,
sediments of alluvial deposits and river
terrace sediments are included.
Technogenetic formations are the embankments
(n), registered almost the entire
site of various thickness from 0.5 to 3.3 m.
They are built of dusty and sandy clay,
gravel and sandy material of construction
waste. Surface part of dike, up to 0.2 m, is
covered by layer of humus.
Sediments of alluvial deposits (a), registered
on the surface of terrain close to the
river Sava, and their thickness in some parts
of terrain ranges up to 12.0 m, i.e. up to the
prospecting depth. They are presented by
powdered dusty sediments and clayed sands,
and partly pebble-clay sediments. Lower
parts of the dusty and sandy sediments are
characterized by interlayers of muddy clay.
In some parts of local character, sediments
of alluvial deposits are covered by a
thin layer of talus clay loam, thickness up
to 1.4 m. These sediments and the other to
the depth of 2.0 m, have no influence on
the foundations of future buildings, so
they neither were study in detail.
For foundation for the planned facilities,
the depth of interest is greater than 2.0 m. The
listed sediments are studied from the viewpoint
of possibility of accepting the load of
buildings as well as the influence of environment
on the foundations of supporting structures
for the stability of roads.
Terrace sediments (t1), form the substratum
of alluvial deposit sediments,
sandy gravel composition, with defined
substratum during prospecting. With
depth, they show better resistant deformable
characteristics.
Modern engineering geological processes
are present on the slopes of the coast
and manifested as tear and less slipping. The
causes of instability are different, and primarily
related to the river Sava flood waves that
carry out shore erosion. Furthermore, the
coast instability is related to the flushing of
small soil particles that is built of dust sediments.
Mainly, the leaching conditions related
to groundwater level fluctuations, which are
very common, considering that they study the
flooded sites of the river Sava.
Unfavorable hydrological and hydrogeological
conditions of the terrain in relation to
the coast stability, aggravated and subsequently
created the conditions relating to
discharge of sewage water from the surrounding
residential buildings, have special
significance in the lower slope of the coast,
where the terrain constantly deteriorates its
geomechanical characteristics.
Slope in the background of prospected
terrain, that presents the natural section in
terrain, is stable, although local, the gradient
No 1, 2010. 21
MINING ENGINEERING