Barapukuria Coal mine is situated under the water bearing layer (aquifer). The average thickness of the water bearing Dupi-Tila formation is around 107m and situated above the coal bearing Gondwana layer. Dupi-Tila formation is fully saturated by water. Besides this enough water is available in the coal bearing Gondwana formation also. The mine water mainly coming from those above layers during development and production period through of the mine by different fracture, fissure, faults, Dykes and damaged Gob area. At present, the toral water discharging from Barapukuria coal mine is around 2367m3/hr
There are two sumps and pump station in underground of the Barapukuria coal mine, One is at -260m level and another at -430m level. The water bearing capacity of -260m level sump is 5000m3 and capacity of -430m level is 7000m3. The mine water accumulated into the sumps during producton and development period and after that mine water discharged on the surface by planned management of 13 no. of pump.
The present scenario of the mine water inflow is given below-
Period Average Water Discharge(m3/hr)
May to December 2014 2,009
January to December 2015 2,103
January to December 2016 2,284
January to July 2017 2,281