UNFC COAL MINES CASE STUDIES

Transcription

1 UNFC COAL MINES CASE STUDIES

2 Format for Collecting Information Block Geological Reserve in the block Geological Reserve Considered Extractable Reserve Balance Extractable Reserve Econ /Not Econ F1 F2 G1 G2 G3 Total G1 G2 G3 Total G1 G2 G3 Total G1 G2 G1 G2

3 Project Report contains: Introduction Project Site Information Mine Boundary, Reserves & Mine Life Mining Strategy Mining Schedule Ventilation CHP & Surface Dispatch Arrangement Power Supply, Illumination & Communication Manpower, Productivity & Training Mine Closure Planning Financial Evaluation Marketability & Justification Geology and Deposit Appraisal Mine Entries Method of Mining / Mining System & Equipment Horizontal & Vertical Transport Water Management, Pumping & Drainage Workshop, Stores & Magazine Civil Construction Safety and Conservation Environment Management Land Requirement, R&R Package and Project Implementation Schedule

4 Case-1: Jagannath Underground (UG) (Mahanadi Coalfields Ltd)

5 Salient Features Name of the Project Jagannath UG Project Geological Block Jagannath UG Block Area (Sq. km) 4.5 Borehole Density (per sq. km) Seams occurring in the block 20 (Index Seam) 12 (Seam I Top) 9 (seam I Bottom) Index (local occurrence), Seam I (split into top, middle & bottom) Total Geological Reserve Mt (Index + Seam I)

6 Sl. No FAULTS Fault Trend Direction of throw 1 F1-F1 NW-SE to E-W Amount of throw (m) Northerly F2-F2 NE-SW Northwesterly F3-F3 NW-SE to E-W 4 F4-F4 E-W to NW-SE 5 F5-F5 E-W to NW-SE Southerly 5-35 Southerly Southerly F6-F6 E-W Southerly 7-15

7 COAL SEAMS CONSIDERED Sl. No. Particulars Thickness range (m) From 1 Index Seam Parting Seam I (Top) Parting A Seam I (Middle + Bottom) To B Seam I (Middle) Parting Seam I (Bottom)

8 NET GEOLOGICAL RESERVE (PROVED) Coal Seam Total (Mt) Index 4.91 Seam-I (Top) Seam-I (Middle + Bottom) Total 80.62

9 SECTOR-WISE NET GEOLOGICAL RESERVE Sector Reserve Workable / Not Workable A 1.66 Not Workable B Workable C Workable D 8.93 Workable E Workable F 5.60 Workable G 2.61 Not Workable Total 80.62

10 Seam-wise Mining Area Seam Area (sq.km) Index 1.3 Seam I (Top) 4.5 Seam I (Bot) 4.5

11 GEO-MINING CHARACTERISTICS Items Seam Index I (Top) I (Mid+Bott) Thickness range (m) Workable thickness range (m) Avg. thickness (m) Avg. grade of coal D C B Immediate roof Sandstone and Shale Avg. seam gradient 1 in 9

12 Plans / Drawings Jagannath UG Index Seam Seam I (Top) Seam I (M+B)

13 MINE ENTRY Incline Name Gradient Length / Depth (m) Crosssectional Area (m 2 ) Incline 1 1 in x 3.0 Haulage, intake Purpose Upto seam Seam-I (Mid+Bot) Incline 2 1 in x 3.0 Belt, intake Seam-I (Mid+Bot) Airshaft Vertical m dia Return Seam-I (Mid+Bot) Airshaft Vertical 140 5m dia Intake Seam-I (Mid+Bot)

14 UG PANEL PARAMETERS No. of Headings in each Panel 5 Width of Galleries 5.0m Pillar Size 35m x 35m

15 PRODUCTION CM Set Cutting Thickness Range Production Rate (Tonnes Per Day) CM 1 2.4m 4.6m 1600 CM 2 2.4m 4.6m 1600 CM 3 1.5m 3.8m 1200

16 EXTRACTABLE RESERVE Seam Extractable Reserve (Mt) Index 1.75 Seam I Top 8.99 Seam I M/B Total Mine Life : 22 Yrs

17 Reserves Total Proved Geological Reserve Mt Geological Reserve Considered for Mining Mt Extractable Reserve Mt

18 UNFC Classification G1 G2 G3 Total g. reserve G. Reserve considered Ex. Reserve Balance Ex. Reserve Eco. Status Eco RESOURCE RESERVE 3,3,3 3,3,2 3,3,1 2,2,2 2,2,1 2,1,1 1,2,2 1,2,1 1,1,2 1,1,

19 Case-2 MAHATADIH RAIDIH BLOCK Raniganj Coalfield

20 SALIENT FEATURES SEAM - Begunia TOTAL AREA Sq. km MINING AREA Sq. km DEPTH TO 550m MINING THICKNESS TO 3.05m GRADIENT - 1 in 6 (small part) to 1 in 8/9 (major part) GASSINESS - Degree III GRADE - S-I to W-II (Avg. S-II) Medium Coking

21 RESERVE (ISP) PARTICULARS RESERVE (MT) Proved Reserve 4.17 Indicated Reserve 2.79 Total Geological Reserve 6.96 Reserve within mining area 4.95 Extractable Reserve 2.51

22 Project Plan of Begunia Seam

23 UNFC Classification G1 G2 G3 Total g. reserve G. Reserve considered Ex. Reserve Balance Ex. Reserve Eco. Status G G Total 4.95 G G Total 2.51 G G Total 2.51 Eco RESOURCE RESERVE 3,3,3 3,3,2 3,3,1 2,2,2 2,2,1 2,1, ,2, ,2,1 1,1,2 1,1,

24 Method of Mining and Rate of Production METHOD OF MINING BORD AND PILLAR, COAL LOADING WITH LHD / SDL UDM FOR FACE DRILLING AND ROOF BOLTING PILLAR EXTRACTION WITH HYDRAULIC SAND STOWING (Gassiness - Degree III) PRODUCTION RATE 2 LHD DIST : 800 TPD (3 LHD per panel) 1 SDL DIST : 200 TPD (2 SDL main dip) TOTAL : 1000 TPD

25 PRODUCTION PHASING Year 1 st 3 rd 4th 5th 6th 7th 8-13 th Prod (Mty) PRODUCTION CAPACITY : 0.3 MTY MINE LIFE : 13 YEARS (including gestation period)

26 Case-3 Deoghar Block Rajmahal Coalfield

27 SALIENT FEATURES Geological Block - Deoghar Block Total Area Sq. km Borehole Density - 15 per Sq. km Seam Occurrence - Seam XII to Seam I Mining Area Sq. km Seams Proposed to be Worked - Seam X to Seam II Bottom Extent of the Mining Area - ( m) / ( m) Production Capacity Mty

28 RESERVE (ISP) PARTICULARS RESERVE (MT) Proved Reserve Indicated Reserve 0.00 Total Geological Reserve 0.00 Reserve within mining area Extractable Reserve 90.04

29 Open cast Mine Limit Plan showing Coal Reserve/Resource

30 Block: Deoghar (Hura C ) G1 G2 G3 Total g. reserve G. Reserve considered Ex. Reserve Balance Ex. Reserve Eco. Status Eco RESOURCE RESERVE 3,3,3 3,3,2 3,3,1 2,2,2 2,2,1 2,1,1 1,2,2 1,2,1 1,1,2 1,1,

31 Mine Parameters Total Extractable Reserve Mt Total Overburden Mm 3 Avg. Stripping Ratio m 3 / Tonne Surface Constraints - 2 nallas flowing north to south Overall Grade - F G HEMM - Diesel Hydraulic Shovel / Backhoe Electric Shovel, Surface Miner, Front End Loader, Dumper (100Te, 60Te), Dozer with Ripper, Drills IRR (85% Utilization) % (Departmental Operations) 17.48% (Outsourced Operations)

32 Thank You