Handbook
Underground Water & Sludge Management Handbook
Water is the most persistent operating problem in a South African hard-rock mine. Fissure water, service water from drilling and washing, and water returning from backfill all end up on the same footwall — and once it collects, it stops being a nuisance and starts costing production.
Standing water in a panel slows face advance, ruins footing on inclined travelling ways, floods cross-cuts, silts up sumps, drowns pumps and eventually forces crews to hand-load mud that should never have accumulated. The cost rarely appears as a single line item. It shows up as lost blasts, overtime cleaning shifts, pump rebuilds and incident reports.
This handbook sets out how experienced crews control water underground, from the face back to the pump station, and where purpose-built equipment removes the manual work altogether. It is written for mine overseers, section engineers, SHE managers and procurement teams who have to justify the spend.
Start here
New to the handbook? These three guides cover the problem most sections are dealing with, the equipment decision that follows from it, and how to build the cost case for fixing it.
- Step 1
Keeping working panels dry: water control at the face
Why water collects in working panels, what it costs in lost blasts and incidents, and how to move it off the face before it becomes a cleaning job.
Read the guide → - Step 2
Sump design and cleaning: manual versus self-cleaning
Why sumps silt up, what manual cleaning really costs in labour and pump damage, and how self-cleaning designs keep capacity available.
Read the guide → - Step 3
Costing water problems: downtime, labour and risk
A practical framework for putting a rand value on standing water, manual cleaning and pump damage — and for building the business case to fix it.
Read the guide →
All 11 guides by topic
Each guide covers one part of the water cycle underground — the problem, why the usual approach falls short, what good practice looks like, checklists you can use on your section, and the equipment that removes the manual work.
Water and sludge underground
Controlling water from the face back to the pump station — interception, sumps, sludge and dewatering.
Keeping working panels dry: water control at the face
Why water collects in working panels, what it costs in lost blasts and incidents, and how to move it off the face before it becomes a cleaning job.
Read the guide →11 min readSump design and cleaning: manual versus self-cleaning
Why sumps silt up, what manual cleaning really costs in labour and pump damage, and how self-cleaning designs keep capacity available.
Read the guide →10 min readSludge and mud handling underground
Once water carries fines, you are handling material, not water. How to keep sludge moving and out of cross-cuts, tracks and pump stations.
Read the guide →8 min readDewatering and pumping: keeping silt out of the pump station
How silt destroys pumping capacity underground, how to size a dewatering chain from panel to shaft, and how to stop solids reaching the pumps at all.
Read the guide →Backfill operations
Getting the water side of backfill right: reticulation, decant, flushing, fines and containment.
Water reticulation for backfill operations
Backfill puts water into the workings by design. How to plan reticulation, decant and fines management so the fill does not become the section's water problem.
Read the guide →7 min readBackfill barricading and safety bags: containing the pour
How backfill containment fails, what a portable safety bag does that a built barricade cannot, and how to plan containment for confined or irregular openings.
Read the guide →Safety, access and ground
Wet footing, travelling ways and temporary support where water has changed the ground conditions.
Spillage, slip and access safety around water
Wet footing and inclined access are a leading source of underground injuries. Practical controls for walkways, travelling ways and spillage points.
Read the guide →7 min readTravelling ways and access in wet inclined workings
Designing and maintaining safe access where the ground is wet and the gradient changes — tread level, step consistency, drainage and inspection.
Read the guide →7 min readTemporary support and props in wet, broken ground
Why wet ground behaves differently, what temporary support has to achieve, and how to install and inspect props where footwall and sidewall conditions deteriorate.
Read the guide →Cost and compliance
Putting a number on the problem, and showing that the controls you rely on are working.
Costing water problems: downtime, labour and risk
A practical framework for putting a rand value on standing water, manual cleaning and pump damage — and for building the business case to fix it.
Read the guide →7 min readWater, access and compliance: what an inspector looks for
A practical view of how water, spillage and access obligations are assessed underground, and how to make compliance a by-product of good operating practice.
Read the guide →Want this applied to your section?
Send us the layout, the inflow you are dealing with and where the water is collecting. We will come back with a practical view of what to change and what it would cost.