A sudden outburst of rain by end of September 2023 Monsoon period in Jharkhand flooded many mines directly affecting start of coal mining. In spite of client’s best effort by deploying multiple regular HSC and Multistage pumps, water levels at pit bottom was only increasing day by day, signaling need for emergency actions.
Problem Identified
Multiple pumps deployed by client with combo of 4000 and 2000 GPM pumps were falling short not only in delivering rated flow, but also in mines water level control
Overall installed power was between 1200 to 1400 KW
Pump faces Continuous Mechanical breakdown, Gland Replacement, huge manpower for maintenance.
Frequent failure of Foot valve which demand frequent human intervention for priming, putting manpower into huge operational stress as priming could take even hours.
Coal production was the direct casualty due to regular pump’s ineffective performance with constant failures.
APPROACH AND SOLUTION BY RWTPL.
After exhaustive site study needs RWTPL has deployed single pump rated for 850 to 1000 m³/hr flow deliverable
Upon commissioning RWTPL pump achieved 945 to 1098 m3/hr driven by 400 KW motor
All existing pumps were stopped. Only one of RWTPL pump was in operation
Pumps were operated almost 24×7 between 1500 to 1825 rpm based on varying working levels of mines
CONCLUSION— (Detailed case study can be shared upon request)
RWTPL pumping system saved almost 55 to 60% of energy saving on a comparable flow of the client’s pump.
The pump operates nonstop leading to lowering of water levels significantly In spite of heavy inflow and multiple gallery open up.
Pumping up to 600 Million gallon till project completion
Effectively coal seams were exposed for blasting effectively from end of 3rd month of dewatering which was never possible with existing pumps