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Climate-resilient groundwater rationing in the mining environment: an operational framework of India
Environmental Earth Sciences ( IF 2.8 ) Pub Date : 2021-06-17 , DOI: 10.1007/s12665-021-09732-1
Rambabu Singh , I. D. Narayan , T. Doley , Nitish Kumar , D. Bandyopadhyay , D. K. Kisku

A precise, climate-resilient rationing/budgeting of groundwater resources is essential for planning its judicious utilization and development. This study undertakes a pioneering scientific assessment for incorporating the ArcGIS integrated with GEC-2015 guidelines into groundwater budgeting computations for the mining environ. The dynamic groundwater resource has been computed for a 10 km buffer study area of Batura opencast mine, Sohagpur coalfield, India, by applying the modified safe-yield approach cum lumped-parameter water balance method on the inflow and outflow components, to derive the change in storage. The results reveal that: the annual gross groundwater extraction is estimated at 17.41 × 106 m3 while the annual extractable groundwater resource is estimated at 51.82 × 106 m3. The recharge component of nearly twofold the extraction component indicates dominant diffuse (natural) recharge and only a minor need of managed (focussed) recharge measures like an artificial recharge in the study area. This amounts to a 16.87% stage of groundwater extraction value indicating that the study area falls in the safe category. Around 90% of the recharge in the study area is found to be natural replenishment through monsoon rainfall, which, coupled with the occurrence of cyclic fluctuation in the water-level in aquifers, establishes that mining in such areas is a climate-resilient activity vis-a-vis groundwater. Besides, the biological reclamation and afforestation of the mined-out area trigger the reversal of land-use pattern caused by the mining activity, minimizing its disruptive effect on the climate-driven water cycle, while upholding ecologically sustainable industrial development (ESID) principles in the mining areas.



中文翻译:

采矿环境中适应气候变化的地下水配给:印度的一个操作框架

对地下水资源进行精确的、适应气候变化的配给/预算对于规划其明智的利用和开发至关重要。本研究进行了一项开创性的科学评估,将 ArcGIS 与 GEC-2015 指南集成到采矿环境的地下水预算计算中。对印度 Sohagpur 煤田 Batura 露天矿 10 公里缓冲研究区的动态地下水资源量进行了计算,通过对流入和流出分量应用改进的安全产量方法和集总参数水平衡方法,推导出变化在存储。结果表明:年地下水总开采量估算为17.41×10 6 m 3而年可开采地下水资源量估算为51.82×1063. 近两倍的提取成分的补给成分表明主要的扩散(自然)补给和仅次要的管理(集中)补给措施,如研究区的人工补给。这相当于地下水提取值的 16.87% 阶段,表明研究区域属于安全类别。研究区约 90% 的补给是通过季风降雨自然补给的,再加上含水层水位的周期性波动,确定这些地区的采矿是一种气候适应性活动-a-vis 地下水。此外,采空区的生物复垦和植树造林触发了采矿活动引起的土地利用模式的逆转,最大限度地减少了其对气候驱动的水循环的破坏性影响,

更新日期:2021-06-18
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