Groundwater is a common problem during mining, and developing a mine below groundwater level presents many challenges.
Also check out our deep-well dewatering solution.
Poorly Controlled Groundwater Will Have Negative Impacts On The Safety, Efficiency And Economics Of Mining Operations
The source of surface water in open pit mines are:
- Snow melt
- Mining operations
- Sepage from pit walls
Generally, there are 2 main approaches to this issue.
Groundwater Control By Exclusion
Groundwater is prevented by installing cut-off walls around the site.
Courtesy Of Groundwater Engineering
Methods Used To Form Cut-Off Walls
- Displacement barriers
- Excavated barriers - They’ll build concrete diaphragm walls, bored pile walls, slurry walls and trenches.
- Injected barriers - Examples are rock grouting, jet grouting, etc.
GROUNDWATER CONTROL BY PUMPING
DEWATERING BY PUMPING
This method involves using dewatering pumps and tends to be more favuorable.
Dewatering Pump Method
- More efficient working conditions due to better trafficking and diggability
- Reduced blasting costs
- Since dry ore and water rock weigh less than wet material, dewatering provides lower haulage costs.
- Improved slope stability and safety
Our Dewatering Solution
We provided a Pioneer diesel dewatering pump PPSK66S14L2 to an open pit mine here in Australia.
The Diesel Driven, Hardened Stainless Steel Pump Was Mounted Onto A Skid Base To Ensure Maximum Mobility Around The Mine
It is auto prime and powered by a powerful 1500 liters Cat diesel engine.