By Pradipta Kumar Deb
An advent to Mine Hydrogeology briefly describes the topic of hydrogeology in order that this data should be built-in into mine improvement making plans. It emphasizes not just the hydrochemical but in addition the actual affects of the hydrogeological atmosphere at the mine and its atmosphere. extra, it discusses the methodologies utilized in mine hydrogeological reviews, showcased via chosen stories on Indian mines.
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Additional info for An Introduction to Mine Hydrogeology
Proper geotechnical studies are to be taken up in such cases to address the problem. An underground mining project is initiated by driving an incline or adit or by sinking a shaft cutting through the geological formations. This means puncturing of both unconfined and confined aquifers (if any) which contributes towards ground water in rush into the mine. This requires lot of dewatering in the initial phase. Additional water is allowed to be collected in any abundant district where from pumping is carried out for dewatering.
1). 3 Hydrogeological Investigation for Proposed Cement Plant at Nongkhleih, Jaintia Hills District, Meghalaya In order to meet the water demand of 1,000 m3/day for the proposed cement plant (adjacent to the limestone mining area) of a large multi national company, groundwater exploration was carried out in the area. Vide Fig. 4. Geologically, the area is underlain by semi-consolidated to consolidated sedimentary rocks of shella Formation falling under Jaintia Group of Tertiary age. General stratigraphy of the area may be described as under: Group Formation Member Quarternary – Jaintia Shella Top soil, clay Shylhet limestone Lower sylhet sandstone (Therria sandstone) with intercalated beds of shale, carbonaceous shale and coal) 1st 2nd 3rd 753 753 753 – 17,300 34,600 753 18,053 35,353 Say X Say X Say X (753 ?
The aquifer may be termed as a coastal aquifer as it occurs adjacent to the sea. The aquifer out crops in a NE–SW direction and it has been estimated that the length along the normal is about 30 km and the average width at right angles to normal is 12 km. The aquifer is exposed in the recharge area which gradually dips in the ESE direction. 46 m below ground level in the 2nd mine area. 38 7 Mine Hydrogeology and Indian Case Studies The static water level of the aquifer is more or less steady at 30 m above mean sea level.
An Introduction to Mine Hydrogeology by Pradipta Kumar Deb