1 / 24

INTERNATIONAL COAL CONFERENCE, KARACHI Oct 22, 2011

INTERNATIONAL COAL CONFERENCE, KARACHI Oct 22, 2011. THAR COAL MINING. Dr. Markos Leontidis. Sindh Coal Fields. Thar Geology . Geology of Thar is very simple with a general strata dip of ~2° (Horizontal) Ran of Kutch fault is the only nearby bigger fault to the Area.

dysis
Download Presentation

INTERNATIONAL COAL CONFERENCE, KARACHI Oct 22, 2011

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. INTERNATIONAL COAL CONFERENCE, KARACHI Oct 22, 2011 THAR COAL MINING Dr. Markos Leontidis

  2. Sindh Coal Fields

  3. Thar Geology • Geology of Thar is very simple with a general strata dip of ~2° (Horizontal) • Ran of Kutch fault is the only nearby bigger fault to the Area Thar Lignite deposit the largest in the World

  4. Thar Coal Potential • Thar Coal Field has a huge Coal Potential • Exploration activities have been carried out in 11 Blocks • More than 600 Exploratory Drillholes from 1995

  5. Thar Geology Overburden : • Thickness : 130 m to 150 m • Composition : Sand, Siltstone & Clayey Siltstone Coal : • Number of main Coal Seams : 3 • Main Minable Coal Seam : Approx. 70% of Total coal thickness • Cumulative Coal Seam thickness : 30m - 35m Slope Stability : • Safety Factor : 1.3 Hydrogeology : • Number of Aquifers : 3 • Aquifers are separated by Aquitard of Claystone • The recharge from De-watering is not unlimited and can be controlled • Water quality : High TDS (5000 - 10000 ppm)

  6. Thar Coal Quality • Lignite quality for Thar Coal is suitable for Power generation

  7. Thar Sulphur Content !

  8. Mining Options for Thar Coal Field • Open Pit Coal Mining • Underground Coal Mining • Thar Strata (Overburden) is composed soft deposits. No hard material ,no explosives necessary • Open Pit Coal Mining is the best option for Thar Lignite • Shovel & Truck as Main Mining Equipments have been proposed. • Bucket Wheel Excavators may be an option for futureenhanced production

  9. Typical Mine Planning for Thar • Key parameters • Total number of Coal Seam 3 • Main Minable Coal Seam Coal Seam 2-7 • Mining Technology Shovel & Truck • Number of benches 15 • Bench height 13 m • Bench Width 20 m • Mine Depth 195 m

  10. Typical Mine Plan with Outside Dump Variant A’ Mine advancement A Outside Dump Open pit advancement

  11. Mine Cross-Section

  12. Thar & other Mines in World • Thar can be compared to many operating Open Pit Mines of the World • Stripping Ratio and Heating Value of Thar Block II is feasible for successful Mine Operation (e.g. Hambach Mine- Germany, producing ~40 Mt/a lignite successfully )

  13. Thar Open Pit Mine vs. Europe Mines Hambach-Inden-Garzweiler-Ptolemais (Large Scale Mines > 20 Mt/a ), Thar ?

  14. Why Thar ? • Why Thar Coal should be mined • Large deposit can provide fuel for power generation 5000 MW at least • High and constant lignite quality; one of the best lignite in the world • Domestic fuel. Independence from imports • Creation of 4000 direct jobs and 15000 indirect jobs only for phase I (1200 MW power generation at least for 50 years) • Competitive cost through other fuels like imported hard coal • Fossil fuels will continue their dominance accounting for 65% of all the electricity generated in the world, with coal dominating at 44% • Pakistan could meet the above mentioned world target having Thar as the largest lignite deposit • Case Study Block II for power generation

  15. Pakistan Power Generation Fuel Mix with Thar

  16. Aquifer Situation Dune Sand Aquifer 50m 120 m Sub-Recent Aquifer 180m Coal seam floor Aquifer

  17. Selected Equipment Variants - Overburden S/T Variant ( Variant 1) Outside Dump (+180 m AMSL) Shovel Mine (-115m AMSL) IC- Spreader Variant (Variant 2) Spreader Inside Dump Conveyor Belt Shovel Mine (-115m AMSL) WTS AMSL- Above Mean Sea Level

  18. Selected Equipment Variants- Lignite Stockyard (+80 AMSL) Conveyor Belt Shovel Mine (-115m AMSL) Crusher

  19. LIGNITE MINING AND USE IN GREECE

  20. Lignite Industry in Greece (PPC. SA)

  21. Lignite Industry in Greece • The quality of Greek lignite varies highly both within and across mines • Heating value ranges from 4390 to9610 MJ/ton

  22. Lignite Industry in Greece Lignite Production in Public Power Corporation mines 1958 – 2005 (Million tons)

  23. Lignite Industry in Greece Total masses excavated in Public Power Corporation Mines 1958 – 2005 (Million Cu. meter)

  24. THANK YOU

More Related