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may be made in the projection on the vertical plane,
parallel to dump profile, or on the other vertical
plane, oriented eg. according to the geodetical coor-
dinate system of the mine.
The interpretation is made mainly on the basis of
different tone and the image structure occurring in
the formation profile. In the case, when two for-
mations have comparble reflectance to the coal
Fig.3. Orthophotomap of an overburden - slope, presented at vertical plane with geological interpretation; P,
P - sands, G - boulder clay; M - silt, I - varved clay, H - humus.
Shadowed area indicate the zones masked by the slope relief and therefore is invisible from camera station.
The orthophotomap was made in the vertical projection plane.
The results of the geological interpretation can be
also coded in the numerical form. This form of
ground photogrammetric photographs elaboration
enables the utilization of their geological contents
to the automatic data processing within the ac-
tualization of the geological data bank for the given
deposit
2. REMOTE SENSING AND PETROGRAPHICAL
VALORIZATION OF THE DEPOSIT
The documentation of geological deposit conditions
by remote sensing was considering in two aspects:
e the possibility and the range of remote detection
of coal and non-coal formations, generally oc-
curred in the roof of deposit,
e the possibility and the discrimination range of
the petrographical coal slope composition.
The results of investigations indicate on the
uniform identification of coal being among deposit
formations, consisted of the sand groups with
differentiated colour from the brown to white-grey
tint, or consisted of loam formations with variable
colour from different brown tints to almost black
colour, or consisted of interbeddings, generally in
white or in the creme-grey tint.
in the visible range of spectrum and also the com-
parable macroscopic features (eg.coal clay) - the
recognizing them on the panchromatic photograps
may be very difficult or even impossible (Fig.4).
On the other hand formations of this type are very
good discriminated on the near infrared images,
although the main part play here the differences in
moisture content at surface layer of these two for-
mations.
The interpretation of coal bed panchromatic pho-
tographs allows for petrographic recognizing of
its petrographical features. It appears that at
the some time it is possible to recognize some
lithotypes groups, namely: smudge coal and
xyloid coal. Among the lithotypes groups it is
possible to distinguish: smudge coal, bituminous
smudge coal, and among xyloid coal group it is
possible to distinguish: structural xyloid coal and
fragile xyloid coal.
The recognition of geological-deposit features has
an essential significance for selective mining of coal
slope, whose purpose is on the one hand the separa-
tion of the useful components from another forma-
tions, and on the other hand - the initial segregation
of raw material having different technological
parameters.