Korba Coalfield
| Location | |
|---|---|
| State | Chhattisgarh |
| Country | India |
| Coordinates | 22°20′30″N 82°34′4″E / 22.34167°N 82.56778°ECoordinates: 22°20′30″N 82°34′4″E / 22.34167°N 82.56778°E |
| Owner | |
| Company | South Eastern Coalfields Limited |
| Website | http://secl.gov.in/ |
| Year of acquisition | 1985 |
Korba Coalfield is located in Korba district in the Indian state of Chhattisgarh in the basin of the Hasdeo River, a tributary of the Mahanadi.
Korba Coalfield is located between latitudes 220 15’ N and 220 30’ N and longitudes 820 15’ E and 82055 ’ E. Korba Coalfield covers an area of about 530 square kilometres (200 sq mi). According to Geological Survey of India, total reserves (including proved, indicated and inferred reserves) of non-coking coal (as on 1.1.2004) in Korba Coalfield was 10,074.77 million tonnes, out of which 7,732.87 was up to a depth of 300 m and 2,341.90 million tonnes was at a depth of 300–600 m.
Coal mined at Korba coalfield generally has the following characteristics – moisture: 4.5–7.4 per cent, volatile matter: 27.9–39.2 per cent, fixed carbon: 34.1–47.7 per cent, ash content: 11.2–31.6 per cent.
Though coal has been mined in Korba coalfields since 1941, large scale production could be initiated only on completion of the Champa-Korba rail link in 1955.Open cast mining activities in the Korba Coalfield are now being carried out. Korba Coalfield accounts for a major portion of coal mined by South Eastern Coalfields Limited. The 2010 production of SECL was 101.15 tonnes, out of which 73.35 tonnes came from Korba Coalfield.
Sub-areas of Korba Coalfield are: Korba, Surakachhar, Rajgamar, Manikpur, Dhelwadih, Kushumunda and Gevra. The major working coalmines are: Surakachhar, Banki, Balgi, Rajgamar, Pavan, Manikpur, Dhewadih, Singhali, Bagdeva, Kusumunda, Laxman, Gevra and Dipka.
Gevra mine is an open cast mine complex at the town of Gevra that has been described as the largest open cast mine in India and Asia, as well as the world's second-largest. As of 2011 it has a capacity of 35 million tonnes per annum. It was opened in 1981. During 1999–2000, it produced over 18 million tonnes of coal and removed 12 million m3of overburden. In 2000, Gevra mine had a plan to expand from 12 million tonnes per annum to 25 million tonnes per annum. Actual production was raised from 18 million tonnes to 26 million tonnes annually in 3½ years. SECL reported that on 18 March 2007, Gevra Open Cast Mine produced 100,000 tonnes of coal, the highest quantity of coal ever produced by any mine or coalfield in India on a single day. Expansion of capacity of Gevra mine from 35 million tonnes annually to 43.75 million tonnes annually has been awaiting environmental clearance since 2009.
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