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| Content Provider | Springer Nature Link |
|---|---|
| Author | Michalski, S. R. Gray, R. E. |
| Copyright Year | 2001 |
| Abstract | The paper discusses the problems of ash disposal from coal combustion in two large coal-mining regions in India. Compared with the United States, India produces some three times the amount of coal ash per million metric tonnes of domestically produced coal, 95% of which is sluiced into gigantic slurry ponds located near urban areas and occupying vast amounts of premium land. The Jharia Coalfield produces some 30 million tonnes/year of ash and contains the world's largest complex of underground coal-mine fires, occupying an aggregate surface area of about 10 km2 above which the land surface is extremely degraded. Similarly, the Singrauli Coalfield suffers from the environmental effects of open-cast mining, spoil heaps and an enormous coal combustion ash disposal problem. Ash haulback is proposed as an efficient, cost-effective way of removing significant quantities of ash from the surface/pond disposal and placing it in open-cast and underground mines. In addition to contributing to the control of mine fires and subsidence, it is suggested that this would have numerous beneficial effects in terms of the reclamation of poor-quality/degraded land for sustainable, productive use and the reduction of harmful emissions and substances in populated areas. L'article présente les problèmes de stockage de cendres issues de la combustion du charbon dans deux grandes régions minières de l'Inde. En comparaison avec les Etats-Unis, l'Inde produit trois fois plus de cendres de combustion, dont 95% du volume est évacué dans de gigantesques bassins situés près de zones urbaines et occupant de vastes espaces de terres ainsi stérilisés. Le bassin charbonnier de Jharia produit 30 millions de tonnes de cendres par an et comporte le plus grand ensemble au monde de feux de mines souterraines, occupant une surface totale d'environ 10 km2, les terrains de surface étant extrêmement dégradés. Le bassin charbonnier de Singrauli souffre des effets sur l'environnement d'exploitations à ciel ouvert, avec leurs verses à stériles et un énorme problème de stockage de cendres. La reprise de ces cendres est proposée suivant une méthode efficace et économique pour retirer des quantités importantes de ces matériaux des bassins de stockage en surface, et les stocker dans les mines à ciel ouvert et souterraines. Cette méthode de stockage devrait contribuer à la maîtrise des feux de mines et de la subsidence. De plus, elle devrait présenter de nombreux effets bénéfiques pour la remise en état de terres dégradées et pour la réduction des relargages de produits dangereux, dans des régions habitées. |
| Starting Page | 23 |
| Ending Page | 29 |
| Page Count | 7 |
| File Format | |
| ISSN | 14359529 |
| Journal | Bulletin of the International Association of Engineering Geology - Bulletin de l'Association Internationale de Géologie de l'Ingénieur |
| Volume Number | 60 |
| Issue Number | 1 |
| e-ISSN | 14359537 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2001-04-03 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Content Type | Text |
| Resource Type | Article |
| Subject | Geology Geotechnical Engineering and Engineering Geology |
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