Mandakini ‘A’ Block,
Talcher Coalfield, Distt.
Angul, Orissa
SALIENT FEATURES
1. Name of
Block
:
Mandakini ‘A’ Block, Talchir Coalfield, Dist.
Angul, Orissa.
2.
Location
:
Latitude : 21o04’40” to 21o06’04” N
Longitude 84o58’24 to 85o00’00” E
Toposheet No. 73 C/16
3. Area
:
6.5 sq.km.
4.
Communication
:
Connected by
all weather road to Angul (40
km) the Dist.
Headquarters and to Talcher town (45 km). The railhead – Talcher and Angul are nearly
at equal distances.
5.
Physiography
:
Topography : Exhibits a gently undulating
topography with slope
towards north-east
Maximum
elevation : 133.55 m above MSL.
Minimum elevation : 105.00m above MSL
Draingage pattern : Dendritic pattern
controlled by Bankuti
Nala
6.
Human Settlement
:
The village Luchamarha comes under
Mandakini-A block.
7. Forest
:
1.43 sq.km area is covered with open mixed
jungle in the south-western, west central and north-eastern part of Mandakini-A block.
8.
Drilling
:
Agency |
Series |
No. of Boreholes
drilled |
Meterage drilled
(m) |
GSI |
TCW |
2 |
800 |
DG(O) |
DGMP |
56 |
11,926.10 |
Total |
|
58 |
12,726.10 |
9.
Geological setting
:
(I)
Formation : Lower Gondwana (Karharbari
and Barakar
Formation)
(II)
Structure
:
a) General strike
E-W
b) Dip 3o to
25o due north (Normally 6o to 9o)
Fatuls : Northernly throw-3 Nos.,
Southerly throw-6 Nos.
10.
Sequence of Coal seams
Coal Seams |
Thickness of workable
coal seams (m) |
Most prevalent seam
thickness (m) |
Thickness of parting
wrt overlying seam (m) |
||
Min. |
Max. |
|
Min. |
Max. |
|
IVB |
2.47 (DGMP-42) |
3.05 (DGMP-48) |
2-3 |
- |
- |
IIIT |
1.08 (DGMP-35) |
1.87 (DGMP-59) |
1-2 |
12.53 (DGMP-48) |
- |
IIIB |
1.09 (DGMP-8) |
3.98 (DGMP-42) |
1-2 |
2.23 (DGMP-59) |
4.02 (DGMP-35) |
L3 |
1.04 (DGMP-59) |
3.27 (DGMP-8) |
1-2 |
15.52 (DGMP-35) |
16.14 (DGMP-59) |
L2 |
1.00 (DGMP-53) |
4.69 (DGMP-16) |
1-2 |
11.98 (DGMP-35) |
27.72 (DGMP-53) |
IIT4 |
1.65 (DGMP-60) |
16.87 (DGMP-39) |
8-10 |
1.61 (DGMP-16) |
17.92 (DGMP-48) |
II (T3+T4) |
8.31 (DGMP-42) |
15.75 (DGMP-7) |
14-15 |
14.89 (DGMP-53) |
28.99 (DGMP-42) |
II T3 |
1.17 (DGMP-5) |
9.24 (DGMP-58) |
2-3 |
1.20 (DGMP-48) |
9.18 (DGMP-39) |
II T2 |
1.35 (DGMP-57) |
10.21 (DGMP-39) |
5-7 |
1.11 (DGMP-7) |
30.66 (DGMP-60) |
L1 |
1.00 (DGMP-57) |
1.48 (DGMP-34) |
1-2 |
8.54 (DGMP-34) |
8.68 (DGMP-57) |
II T1 |
2.22 (DGMP-23) |
14.59 (DGMP-2) |
8-9 |
20.43 (DGMP-47) |
44.18 (DGMP-63) |
II (B3+T1) |
1.16 (DGMP-19) |
18.63 (DGMP-16) |
17-18 |
- |
- |
II B3 |
1.12 (DGMP-58) |
13.04 (DGMP-8) |
7-8 |
1.57 (DGMP-25) |
15.53 (DGMP-61) |
II (B2+B3) |
6.11 (DGMP-1) |
- |
- |
2.49 (DGMP-1) |
- |
II B2 |
1.08 (DGMP-6) |
9.04 (DGMP-58) |
2-4 |
2.06 (DGMP-36) |
19.11 (DGMP-43) |
II B1 |
1.33 (DGMP-5) |
14.70 (DGMP-8) |
10-13 |
1.04 (DGMP-30) |
19.01 (DGMP-59) |
II (Bo b + B1) |
9.83 (DGMP-1) |
19.90 (DGMP-49) |
15-16 |
1.74 (DGMP-1) |
17.07 (DGMP-36) |
II Bo b |
1.01 (DGMP-62) |
9.01 (DGMP-52) |
2-3 |
1.09 (DGMP-29) |
8.57 (DGMP-62) |
II (Bo a1 + Bo a2) |
1.07 (DGMP-21, 30) |
5.65 (DGMP-7) |
1-2 |
26.20 (DGMP-60) |
51.87 (DGMP-54) |
II Bo a2 |
1.05 (DGMP-3) |
6.07 (DGMP-59) |
1-2 |
11.65 (DGMP-47) |
38.96 (DGMP-44) |
II Bo a1 |
1.04 (DGMP-59) |
3.53 (DGMP-8) |
1-2 |
2.00 (DGMP-49) |
47.76 (DGMP-25) |
11.
Quality of coal seams :
Seam |
Moist% |
Ash% |
FC% |
UHV (Kcal/kg) |
||||
Min. |
Max. |
Min. |
Max. |
Min. |
Max. |
Min. |
Max. |
|
II Bo a |
3.3 |
9.2 |
21.7 |
48.2 |
23.1 |
42.7 |
1572 |
5024 |
II Bo a |
2.3 |
7.6 |
18.3 |
58.3 |
30.6 |
34.4 |
524 |
5330 |
II Bo a1 + Bo a2 |
3.7 |
6.6 |
19.5 |
52.3 |
23.7 |
37.0 |
1172 |
5356 |
II Bo b |
3.6 |
10.02 |
21.1 |
51.1 |
23.7 |
37.5` |
1349 |
4898 |
II B1 |
2.9 |
9.8 |
20.1 |
49.2 |
24.8 |
39.3 |
1558 |
4774 |
Bo b+B |
4.3 |
5.5 |
32.4 |
45.0 |
30.9 |
- |
2089 |
3671 |
II B2 |
2.2 |
8.1 |
15.9 |
54.3 |
22.3 |
38.1 |
894 |
5649 |
II B3 |
4.2 |
9.1 |
12.1 |
47.4 |
26.1 |
46.5 |
1744 |
5974 |
II (B2+B3) |
2.6 |
7.3 |
31.2 |
58.6 |
28.1 |
37.0 |
442 |
4360 |
II (B3+T1) |
3.5 |
8.2 |
27.8 |
57.6 |
28.2 |
30.8 |
472 |
3936 |
II T2 |
3.4 |
8.0 |
18.2 |
56.3 |
31.3 |
42.1 |
665 |
5505 |
II T3 |
3.2 |
7.2 |
25.7 |
57.2 |
21.7 |
37.8 |
547 |
4360 |
II T4 |
3.5 |
7.1 |
30.3 |
55.8 |
27.8 |
35.2 |
721 |
3810 |
II (T3+T4) |
5.7 |
7.4 |
29.4 |
41.7 |
31.7 |
- |
2357 |
3865 |
Local seamII (2) |
4.5 |
8.6 |
24.0 |
48.9 |
28.4 |
35.9 |
1466 |
4464 |
12.
Seamwise Reserves
:
(Reserves
in Mt.)
Seam |
Proved(Gross) |
Indicated (Gross) |
Total Gross
Geol.Reserves |
Total Net Geol.
Reserves |
L2 |
5.956 |
- |
5.956 |
5.360 |
II T4 |
24.299 |
- |
24.299 |
21.869 |
II T3 + II T4 |
11.292 |
- |
11.292 |
10.163 |
II T3 |
8.858 |
- |
8.858 |
7.973 |
II T2 |
26.666 |
- |
26.666 |
23.996 |
II T1 |
44.440 |
- |
44.440 |
39.996 |
II B3 + T1 |
6.464 |
- |
6.464 |
5.817 |
II B3 |
34.449 |
0.190 |
34.449 |
31.175 |
II B2 + B3 |
0.235 |
- |
0.235 |
0.211 |
II B2 |
24.251 |
0.429 |
24.680 |
22.212 |
II B1 |
69.239 |
1.964 |
71.203 |
64.083 |
II Bo b + B3 |
14.748 |
- |
14.748 |
13.273 |
II Bo b |
32.505 |
0.974 |
33.479 |
30.131 |
II Bo a2 |
5.861 |
0.309 |
6.170 |
5.553 |
II Bo a1 + Bo a2 |
2.041 |
0.156 |
2.197 |
1.977 |
II Bo a1 |
7.237 |
0.235 |
7.472 |
6.725 |
TOTAL |
318.538 |
4.258 |
322.796 |
290.517 |
NET Geological
Reserve |
286.684 |
3.833 |
|
290.517 |
13.
Gradewise Reserve
:
Grade |
Reserves |
|
Gross |
Net |
|
B C D E F G |
0.09 6.74 20.81 64.93 169.75 60.47 |
0.08 6.09 18.73 58.44 152.78 54.42 |
TOTAL |
322.80 |
290.52 |