Influence of coal mining on regional karst groundwater system: a case
Karstic limestone formations in the West Mountain area are important water resources for Taiyuan City in Shanxi Province, northern China, which is also known for its large-scale coal mining production. In this study area, groundwater is not only exploited for water supply purposes but also drained because of coal mining. The process of coal …
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KARNATAKA EMTA COAL MINES LIMITED
It's authorized share capital is INR 5.00 cr and the total paid-up capital is INR 5.00 cr. Karnataka Emta Coal Mines Limited's operating revenues range is Under INR 1 cr for the financial year ending on 31 March, 2016. It's EBITDA has decreased by -103.83 % over the previous year. At the same time, it's book networth has increased by …
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Kudremukh Iron Ore Company Limited (KIOCL): The …
about mining in eastern Karnataka region with much lower rainfall, flat terrain, little biodiversity, which holds iron ore of much higher quality. The only exception to this trend …
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A novel non‐pillar coal mining technology in longwall top coal …
The LTCC mining method is one of the most important coal mining methods; its progress has greatly promoted the production of coal after the end of the seventeenth century. 2, 3 In the past decades, the LTCC mining method has been widely employed in Chinese coal mines, especially for extracting coal seams with a thickness of more than 4.5 m. 4 ...
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Evaluation of digital soil mapping approach for predicting …
Study area. The present study was carried out in Koppal Taluk of northern Karnataka plateau, India, and located between 15° 8′ N to 15° 24′ N latitude and 76° 51′ E to 76° 16′ E longitude with an area of 1373 km 2 (Fig. 1).The study area represents a hot semi-arid climate with annual rainfall ranging from 600 to 750 mm with a mean annual …
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Deployment of Continuous Miner in under Ground Coal …
Deployment of Continuous Miner in under Ground Coal Mine: A Case Study of Sarpi Mine. Original Contribution. Published: 16 May 2022. Volume 103, pages …
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Influence of Coal Mining on Historical Buildings: Case Study …
As one of the world's five major coal production areas and a critical coal base in China, Shanxi Province contains coal in an area of 64,800 square kilometers, accounting for approximately 40% of the province's total land area. There are 94 counties and districts in the province storing coal resources, and 91 counties have coal mines.
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Heavy Metals from Acid Mine Drainage in Coal Mines-A …
The case study of surface coal mines of Northern Coal Fields Ltd., Singrauli is presented in this paper. Various techniques for decreasing the acidity of water in coal mine were experimented at laboratory scale. The pH value is ranging from more than ... Sons in Kolar goldfield in Karnataka. India is one of the leading producers and exporters ...
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Mine Accident Investigation in India : A System Approach
Mining has been observed as a high-risk industry for a long time. Accident statistics of Indian mines still shows very high rate of injuries and fatalities. The current death rate per 1000 person employed in coal and non-coal mines is 0.27 and 0.40 respectively. The serious injury rate in the current year is also very high and unacceptable.
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Case Studies in Coal Mines in India
Case Studies in Coal Mines in India 483 Figure 4 (a) L o a d s imposed o n unit length of pillar = 2 area A,, + area q-Q where A = cover load n o t taken by waste a n d (b) load resisted by pillar = 2 area A w By inserting a very large value for in the formula, the required width of a long continuous pillar can be calculated.
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Restoring coal mine degraded lands in India for achieving …
Here, we summarize some of the field observations explicitly based on the restoration of coal mine degraded lands in India. Experiences based on the practical …
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Coal Pillar Stability Investigation for High-Intensity Mining in …
This article presents a systematic study on the stability of coal pillars in high-intensive exploitation of water-rich coal seams, serving as a model for the safe …
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Price Estimation of Coal Seam and Its Application in the …
The NPV of the sale amount is increased by 1.53%, equivalent to 225.17 million Chinese Yuan, after the optimization of mining sequence in the undisclosed coal mine. The case study indicated that the optimization of mining sequence considering the heterogeneous coal price can increase the economic benefit while mining the same …
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Correction to: Control effect of coal mining solid‑waste
Correction to: Control effect of coal mining solid‑waste backfill for ground surface movement in slice mining: a case study of the Nantun Coal Mine. Correction; Published: 07 February 2024; Volume 31, page 16110, (2024) Cite this article
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Environmental impact studies in coalfields in India: A case …
Abstract. Coal is the major fossil fuel used for power generation in India. For producing more and more coal, mining activities are increasing day by day. Coal …
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Environmental Consequences of a Burning Coal Mine : A Case Study …
Abstract: Coal mining has always been associated with various environmental consequences. Geo-environmental parameters such as air, water, soil, agricultural lands, vegetation, landforms are affected directly by coal mining activities. Coal fires are an ever-present problem in coal-mines, the world over. In the Jharia coalfield …
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Coal India Limited case study
Coal Production, Quality and Price Figure 3: India's domestic coal consumption, production and production targets (FY 2005-20) in million metric tons (Source: EIA) Between 2004 and 2012, CIL's production increased by just 65 million tons to 436 million tons, growing at a rate of 2.3% per year on an averagelv . 12.
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Optimization of Opencast Mines Using Minimum Cut Algorithm – A Case
Dept. of Mining Engineering, National Institute of Technology, Rourkela, Odisha 769008,IN Keywords: Modeling of deposit, open pit optimization, opencast mines, surface mining, surpac, numerical modeling Abstract. The demand and supply gap are on a rising trend in this developing world for all the minerals/ores.
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On the strong earthquakes induced by deep coal mining …
In this paper, a case study of strong mine earthquakes induced by fracture of thick and hard strata in deep coal mining is presented. The objective is to investigate temporal and spatial distribution characteristics of strong earthquakes in deep mine coal seam mining through microseismic monitoring and ground subsidence monitoring …
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Evaluation of Surface Subsidence Due to Inclined Coal Seam Mining…
The characteristics of overlying strata movement and the evolution of surface subsidence-related parameters are essential in preventing geological hazards and environmental alterations. This paper comprehensively analyses surface subsidence, overlying strata movements, and dynamic surface characteristics above the No. 24213 …
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Influence of magma intrusion on coal …
The research samples were taken from the N 2 908 mining face of the Daxing coal mine. The N 2 908 mining face is located in the southwest of the North Second Mining Area, with a mining strike ...
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Coal Pillar Stability Investigation for High-Intensity Mining …
This case study focuses on the Xiaojihan coal mine, which is situated in the southern part of the Ordos Basin, as shown in Fig. 1.The hydrogeological conditions of the mine are characterized by complexity, with the #2 coal seam being the current mining seam and serving as the main water-bearing layer.
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Environmental impact studies in coalfields in India: A case study …
Land-use mapping and change detection in a coal mining area—a case study in Jharia coalfield, India. Int J Remote Sens, 19 (1998), pp. 391-410. View in Scopus Google Scholar [49] A. Manna, R. Maiti. Opencast coal mining induced defaced topography of Raniganj Coalfield in India—remote sensing and GIS based analysis.
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Case Study Questions for Class 8 Science Chapter 5 Coal …
Here we are providing case study questions for CBSE Class 8 Science Chapter 5 Coal and Petroleum. Case Study Questions. ... Karnataka Board. Kerala Board. Maharashtra Board. Punjab Board. Rajasthan Board. Tamilnadu. Telangana Board. Orissa Board. Jharkhand Board. Assam Board. Jammu & Kashmir Board.
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Reclaiming Coal Surface Mines in Central Appalachia: A …
THE STUDY REGION The study area is the watershed of the North Fork of the Kentucky River, an area of about 1,600 square miles. The terrain is mountainous with narrow valleys, and is typical of the central and southern Appalachian coalfields. The area has experienced both deep and surface mining for coal, and surface mining has expanded in ...
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Environmental Impact of Roadway Coal Transportation in Coal Mining …
Power generation in India has increased from 1362 MW in 1947 to about 105,000 MWs as on March 2002 out of which about 62,000 MWs is from coal based power stations. Over 100,000 MWs additional generation capacity needs to be added by 2012 to bridge the gap between demand and supply of power. Coal would continue to be the prime source of …
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Sustainable reclamation practices for a large surface coal …
Sustainable reclamation practices for large surface coal mines in USA semiarid environment contribute to the quality of the environmental on a long term basis where environmental resources are protected for future generation. Land, after reclamation, must be suitable for the previous use of greatest economic or social values to the …
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(PDF) Environmental issues of coal mining
Environmental issues of coal mining - A case study of Jharia coal-field, India. Conference: International Conference on …
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Case Studies in Sustainable Development in the Coal …
The goal of sustainable development is to ensure economic growth today without jeopardising economic development, the social well-being and natural environment of future generations. Energy consumption is closely tied to this goal and plays a key role in determining whether is attainable. As oil, gas and coal still heavily dominate world …
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Karnataka Iron Ore Mining
The Supreme Court has permitted resumption of exports of already excavated iron ore from the state through modes other than e-auction, and also increased the ceiling limit on mining for the following mines: Ballari: from 28 MMT to 35 MMT. Chitradurga and Tumakuru districts: from 7 MMT to 15 MMT. The court ruled that it was necessary to …
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