Hydrogeochemical investigation and quality assessment of mine water resources in the Korba coalfield, India

2016 ◽  
Vol 9 (4) ◽  
Author(s):  
Abhay Kumar Singh ◽  
Nitin P. Varma ◽  
Guatum Chandra Mondal
Keyword(s):  
Water Resources ◽  
Quality Assessment ◽  
Mine Water

Environmental Geochemistry and a Quality Assessment of Mine Water of the West Bokaro Coalfield, India

2016 ◽  
Vol 35 (4) ◽  
pp. 525-535 ◽  
Author(s):  
Ashwani Kumar Tiwari ◽  
Prasoon Kumar Singh ◽  
Mukesh Kumar Mahato
Keyword(s):  
Quality Assessment ◽  
Mine Water ◽  
Environmental Geochemistry ◽  
The West ◽  
West Bokaro Coalfield

scholarly journals Establishing coal-water-wind (solar) energy comprehensive green energy mining system by using mine water

2018 ◽  
Vol 9 (2) ◽  
pp. 331-337
Author(s):  
WeiBo Sun ◽  
Yan Wang ◽  
LeiMing Zhang ◽  
YanDa Liu ◽  
Xin Wang
Keyword(s):  
Water Resources ◽  
Solar Energy ◽  
Mine Water ◽  
Fractured Rock ◽  
Clean Energy ◽  
Green Energy ◽  
Western Region ◽  
Mining System ◽  
Exploitation System ◽  
Underground Reservoirs

Abstract Coal mining will damage water resources, based on the analysis of mine water resources in the western region of China. Using mine water as the medium, a coal-water-wind (solar) energy comprehensive green energy exploitation system is established. Mine water is stored in underground spaces formed by mining, and mine water purification is achieved by fractured rock and goaf. Using multistage underground reservoirs, through pumping to store energy, the unstable solar and wind energy is converted into a stable output power. The possibility of using the mine water as a medium to use the clean energy, and the prospect of the utilization of mine water resources in the future, is discussed.

scholarly journals Prediction and Maintenance of Water Resources Carrying Capacity in Mining Area—A Case Study in the Yu-Shen Mining Area

2020 ◽  
Vol 12 (18) ◽  
pp. 7782
Author(s):  
Yujun Xu ◽  
Liqiang Ma ◽  
Naseer Muhammad Khan
Keyword(s):  
Water Resources ◽  
Prediction Model ◽  
Coal Mining ◽  
Carrying Capacity ◽  
Mine Water ◽  
Water Conservation ◽  
Ground Deformation ◽  
Mining Area ◽  
Water Resources Carrying Capacity ◽  
Mining Methods

The problem of water resources damage caused by coal mining has restricted the sustainable development of Yu-Shen mining area. Illustrating the relationship between mining and water resources carrying capacity is of great significance to solve this problem. In this study, the authors proposed an appraisal and prediction model of water resource carrying capacity in the mining area (WRCCMA) based on the analytic hierarchy process (AHP)-fuzzy comprehensive evaluation method. A triple-leveled structure model was developed, and the main influencing factors of the WRCCMA and the membership functions were analyzed. The prediction model was applied to Yubujie colliery to test its validity by investigating the changes of vegetation coverage and the ground deformation of the colliery and its adjacent coal mine before and after mining. Subsequently, we obtained the WRCCMA of the study area and zoning map of different grades of WRCCMA in the mining area by applying this model to the whole Yu-Shen mining area. Furthermore, three countermeasures to maintain the WRCCMA and realize water conservation coal mining (WCCM) were provided to collieries with different WRCCMA grades, including mining methods selection, mine water reutilization, and water-resisting layer reconstruction. Reasonable mining methods and water-resisting layer reconstruction can reduce the development of water conductive fractures and thus prevent groundwater from penetrating into the goaf. Mine water reutilization provides a source of water demand for collieries and families, contributing to the reduction of abstraction of water resources. These three countermeasures can help to maintain the WRCCMA. This paper successfully combines the fuzzy theory with mining engineering and provides theoretical and practical guidance for other mining areas in arid and semi-arid regions of Northwest China.

Hydrogeology of the Sterkfontein Cave System, Cradle of Humankind, South Africa

2017 ◽  
Vol 120 (3) ◽  
pp. 403-420
Author(s):  
P. Hobbs ◽  
N. de Meillon
Keyword(s):  
Water Resources ◽  
Water Level ◽  
Mine Water ◽  
World Heritage Site ◽  
Karst Water ◽  
Water Drainage ◽  
Cave System ◽  
Fossil Site ◽  
Cradle Of Humankind ◽  
The Impact

Abstract A water level rise of almost 3 m in the space of two years in the Sterkfontein Cave system since late-2009 necessitated the re-routing of the tourist path through the cave to successively higher elevations on three occasions. It also raised concern for a possible association with copious acidic and sulphate-rich mine water drainage from the West Rand Goldfield (a.k.a. Western Basin) starting in early-2010, and the related threat to the UNESCO-inscribed fossil site. Although these circumstances have had little impact on the tourist value of the site, a prognosis of the impact on cave water level and quality is indicated by virtue of its karst setting and palaeontological significance. Historical and recent potentiometric data, together with ancillary hydrogeological and hydrochemical information acquired in the course of a water resources monitoring programme for the broader Cradle of Humankind World Heritage Site, provides new insight into the hydrogeology of the cave system. An improved understanding of the hydrophysical and hydrochemical response of the cave water system sheds light on the location of this system within the water resources environment. It is proposed that the present-day maximum cave water level is constrained to an elevation of ~1440 m above mean sea level. The recent electrical conductivity of 78 mS/m for cave water is 32% greater than the 59 mS/m recorded in mid-2010 and earlier. Similarly, the recent sulphate concentration of 161 mg/L is 178% greater than the 58 mg/L recorded before 2010. Compared to coeval values for ambient karst groundwater represented by the normative Zwartkrans Spring water, the magnitude of the increases in the springwater are similar, viz. 48% (from 84 to 124 mS/m) in salinity and 166% (from 154 to 409 mg/L) in sulphate. Although a distinct mine water impact is evident in both instances, the values indicate a muted impact on the cave water chemistry compared to the springwater. These and other documented observations better inform the threat from various poorer quality water sources to the fossil site in particular, and to the broader karst water resource in general. This contextualises concern for the hydroenvironmental future of Sterkfontein Cave and other nearby fossil sites such as Swartkrans, Rising Star and Bolt’s Farm. The dynamic response of the water resources environment to a variety of hydrological and hydrogeological drivers reinforces the need for monitoring vigilance across a range of disciplines.

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