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Utilization of mine water in Mangampeta Barite mine in Kadapa district ( INDIA )

Congress: 2008
Author(s): MYLARAM NARAYANA SWAMY
International Conference: Presented a paper on "Unified Rain Water Harvesting methodology to tackle growing scarcity of domestic water supplies in India" in International Rain Water catchment systems conference held in septí2001 at Mannhei

Keyword(s): Mangampeta mines,utilization of mine water,Agricultural fields.
AbstractAbstract : Andhra Pradesh Mineral Development Corporation, a concern of the Government of Andhra Pradesh mines most of the mud-grade barite from Mangampet opencast mines in Kadapa District, which is the largest barite deposit of India . Around one fourth of the annual cost of mining of around Rs. 2.5 Crores is being incurred presently towards pumping groundwater of about 150 to 700 l/s with a mean of about 400 l/s seeping deep into the mines. The total water so pumped is around 12.5 million cubic metres a year. With further deepening of mines in future, there can be a further increase in the cost of dewatering. Owing to failure to dewater the mines during monsoon, mining had to be suspended once in a while for some period leading to losses of around another Rs. 2.5 Crores a year. Most of the groundwater seeping into the mines is actually from a shallow depth, but during dewatering there was need to pump the water from the bottom of the mines. Because of the necessity to pump the mine water into a nearby pond, much of that pumped water is recycled. Mangampeta mine water should be diverted to near by agricultural fields.Dry lands can be converted into wet lands. Utilization of Mangampeta mine water will be a model for mine water usage in Andhra Pradesh as well as India.There are several mines in A.P. like Singareni coal mines,Gudur Mica mines etc. Good amount of water is being produced during mining activity.Mining authorities have no plans to utilize mine water.According to some studies, Mangampeta,Singareni,Gudur mine water is the best for the cultivation. Meanwhile annual rainfall is around 1000 mm and the drainage area from which rainwater can seep into the mines is hardly around a square kilometre, a substantial portion of mine water is traced to groundwater seeping from the adjoining boulder river having a catchment of around 135 square kilometres. Unlike in nearby rivers even with high drainage areas remaining ephemeral with flash floods for a few days and absence of any surface runoff for most part of the year, a boulder river has a substantial base flow round the year despite vagaries of monsoon. By tapping the groundwater seeping into mines through a small number of high-yielding wells of appropriate design far away from the mines, it is possible not only to relieve the APMDC from the recurring cost of dewatering but also create a new source of groundwater. The water so developed can benefit a large number of cultivators including those presently getting benefit from such seepage water for cultivating agricultural lands and wastelands near the mines.
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