06 IMYB2011-CHHATTISGARH.pmd - Indian Bureau of Mines

GSI
Coal
(Mahanadi
va lley coal
fields)
Rai garh
-do-
STATE REVIEWS
Nawagaon - - - - - Regional exploration under G-2
Teram
Table – 3: Details of Exploration Activities in Chhattisgarh, 2010-11
Agency/ Location Mapping Drilling Sampling Remarks
Mineral/ Scale Area No. of Metreage Reserves/Resources estimated
District (sq km) boreholes
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-
-
11-6-4
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stage ini tiated during FS 2009-10
was continued in this bl ock, Mand
– Raigarh Coalfield to establi sh the
developmental pat tern and
continuity of the regional Barakar
coal seams, and to assess coal
resources potentiality as well as to
carry out appraisal of CBM
cont ent. Ten regional Barakar coal
seam / zones (Seam I to X, in
ascendi ng order) have been
intersected b etween th e depths of
45.37 m and 457 .18 m. The
important seams are Seam – I, IV,
VI, VII and VIII with cumulative
thickness of coal ranging from less
than a meter to 10.46 m. Seam IV
is the thickest seam and was
intersected b etween th e depths of
24.43 m and 425.04 m. Cumulative
coal thickness of Seam I and IV
varied from 2.35 m to 10.46 m. The
work is in progres s.
Regional explo ratio n und er G-2
stage was tak en up du ring FS 2010-
12 in this block Mand – Raig arh
coalfield to establish the
developmental pattern and
continuity of th e region al Barakar
coal seams in tersected in explo red
adjacent Kurumkela Blocks in the
north-cen tral part of Mand –
Raigarh Coalfield an d to evaluate
additional coal resource in the area.
In boreho le-2 formational contact
betw een Ba rren Measures and
Barakar Formation was intersected
at 162.22 m d epth. In Barakar
Fo rmation , ten regiona l coal seams
(Seam III to XII in ascend ing
order) w ith cumulative thickness
betw een 0.50 to 13.74 m
intersected b etween the depths of
202.88 and 477.50 m. T he thickest
sea m is highly banded in nature and
its cumulative thic kn ess ranges
from 11.90 m to 1 3.7 4 m. The work
is in progress.
(Contd.)