Water resource accounting for an iron-ore mining area in India

Chaulya, S.K.; Chakraborty, Manash; Ahmad, Mushtaq; Singh, K. K.; Singh, Roshani; Tewary, B. K.; Gupta, Pankaj Kumar

doi:10.1007/s002549900085

Cited by 4 publications

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“…Active iron-ore mining operations currently cover 5% of Goa (or approximately 18,300 ha) (Chaulya et al 1999). Throughout India, iron-ore is predominantly mined using open cut mining methods.…”

Section: Introductionmentioning

confidence: 99%

Effects of monsoonal rainfall on waste dump stability and respective geo-environmental issues: a case study

Yellishetty

Darlington

2010

Environ Earth Sci

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The stability of mine waste dumps is of critical importance and an issue, the mining industry of Goa, India is continually facing. The State of Goa receives high rainfall of around 3,000 mm annually. This heavy monsoonal rainfall is often believed to be the cause of dump slope instability. In light of several dump collapses encountered in the State and their damaging effects on both mine operations and local geo-environmental conditions, this paper examines their stability considering various geotechnical factors and the downstream environmental effects of a slope failure. The mechanical properties of dump waste material are reported at different compaction levels. The effect of these properties and changes in porewater pressure are specifically examined using limit equilibrium analysis. An empirical formula is developed relating dump height, material mechanical parameters and pore-water pressure to the factor of safety of the slope. It was found that the level of compaction experienced by the material had a significant effect on the factor of safety.

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Section: Introductionmentioning

confidence: 99%

Effects of monsoonal rainfall on waste dump stability and respective geo-environmental issues: a case study

Yellishetty

Darlington

2010

Environ Earth Sci

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Chaulya

2003

Water Resources Management

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Water Resource Accounting for a Mining Area in India

Chaulya

2004

Environ Monit Assess

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A water resource accounting study has been carried out for a limestone mining area located in Thondamuthur block of Coimbatore district under Tamilnadu state in India. The major source of surface water in the region is south-west and north-west monsoons during July-August and October-November, respectively. During the winter season, groundwater levels range from 13 to 25 m below the surface whereas during the summer season it varies from 20 to 30 m. The thickness of the weathered zone ranges from 10 to 40 m and the depth to bedrock ranges from 50 to 55 m. The groundwater is generally potable. The average annual rainfall during the twelve-year period (1988-1999) is 590 mm. Out of the total rainfall, around 11% is lost as surface runoff, 10% is lost through evaporation and transpiration, 30% is utilized for consumptive used, 16% is absorbed as subsoil loss and remaining only 33% is stored as groundwater recharge. Again out of total groundwater recharge only 85% is utilizable groundwater. The annual utilizable groundwater resource available in the area is 79.220 million cubic metre (MCM). Whereas, total groundwater demand for the region is 68.922 MCM, and breakup of industrial, domestic and agricultural demands are 0.020, 5.956 and 62.946 MCM, respectively. Therefore, at present the stage of groundwater development or utilization for the area is around 87%, and falls under 'Dark' category. The 'Dark' category indicates that the utilization of groundwater is more than 85% of available groundwater resource. This situation has to be controlled by immediate initiation of suitable measures for groundwater recharge. The identified recharge zones in the block along with the recommended recharging methodology are summarized in this paper. The paper includes a comprehensive site description, status of the water resource and demand, identification of recharge zones and recharging techniques, and recommends a water supply augmentation strategy for enhancement of water resources in the region.

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Water resource accounting for an iron-ore mining area in India

Cited by 4 publications

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Effects of monsoonal rainfall on waste dump stability and respective geo-environmental issues: a case study

Effects of monsoonal rainfall on waste dump stability and respective geo-environmental issues: a case study

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Water Resource Accounting for a Mining Area in India

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