Subsidence and Structural Repair Experts
Subsidence on a mining site can be caused by a combination of natural movement of the earth and the vibrations generated from heavy mining machinery usage. Resinject provides reliable and long lasting chemical underpinning services that help to fortify the ground and minimise the risk of subsidence occurring. Our non-toxic resin products are Australian made and abide by strict Australian standards. It’s a smart and sustainable solution that is designed to meet the needs of the highly regulated mining industry.
We back our chemical underpinning services with a 50 year product warranty, ensuring your mine site is afforded the support it needs to continue for future generations.
Problems we solve
Foundation Repair
Foundation movement in mining areas often results from voids, soil desaturation, or compaction failure caused by mining activity. These lead to cracks, uneven floors, and instability. Resinject’s chemical underpinning injects expanding resin beneath affected zones to fill voids, strengthen the ground, and relevel structures, delivering fast, non-invasive stabilisation.
Unlevel Structures
Subsidence beneath conveyor supports, processing facilities, or workshops can create hazardous misalignment. Our precision resin injection lifts and relevels structures by compacting soil beneath foundations. This restores uniform load-bearing strength and prevents further movement, ensuring continued operational safety and reliability.
Subsided Railways
Railway corridors affected by mining subsidence face alignment issues, derailment risk, and maintenance downtime. Resinject strengthens and stabilises subgrades through targeted resin injections that fill voids and re-establish level tolerances. The process is quick, non-disruptive, and extends the service life.
Sunken Concrete
Sunken slabs on mine sites, often caused by groundwater changes, erosion, or poor fill compaction, can create uneven surfaces and tripping hazards. Our resin injection process supports and relevels concrete by filling voids and sealing gaps, providing a durable, long-term fix for mine subsidence damage.
Assets we repair
Stacker and Reclaimers
Wash Bay
Workshop Floor
Railway Foundations
Gantry Conveyor Belts
Hairline cracks can sometimes be cosmetic, but wider or stepped cracks near windows, doors, or load-bearing walls may indicate deeper ground movement. Because mining subsidence can be so expensive and dangerous, it’s best to seek professional help as soon as you notice any signs, such as uneven floors, machinery misalignment, or sudden cracking. Early assessment allows for efficient mine subsidence repair and helps prevent costly structural damage.Resinject provides advanced resin injection solutions to stabilise and strengthen essential mining infrastructure. Our systems effectively address ground movement, settlement and voiding beneath:
- Processing plant and crusher station foundations
- Conveyor footings, trestles and transfer stations
- ROM pads, load-out areas and heavy-vehicle bays
- Haul roads, access roads and rail load-out zones
- Workshops, warehouses and equipment pads
- Substations, switch rooms and control buildings
- Pipeline corridors, pump stations and service infrastructure
- Camp buildings, admin offices and amenities
Our engineered solutions deliver fast, non-disruptive ground improvement across all mining environments, helping extend the life and performance of critical assets.
Recent Mining & Resources Projects we have completed
Value we offer
Improved Safety
Via removal of pedestrian tripping hazards, correction of floor surface levels
Lower Cost
Through avoidance of expensive conventional foundation repairs or remove and replace options
Time Savings
In comparison to conventional methods. Our services are completed in a matter of hours and can be trafficked or used immediately
Small Footprint
Our repair works as resin is injected by a small team using a fully self-contained truck housing the associated pumps and tools required
See what some of our recent clients had to say!
I have cracks everywhere, Resinject lifted and levelled all the cracks. Great experience…
Laura E
Huge shout out to Richard and the team, they were professional and skilful. My floor is looking great…
Melissa B
As a Strata Manager I can confirm Resinject are a brilliant company to work with. Takes the stress out of managing properties…
Jan B
It is now more than two months since Resinject stabilised the foundations of my old house and I couldn’t be happier with the results…
Carolyn S
Resinject level several floors in a few warehouses I own. They are a great company to work with…
Brett P
My experience with these guys has been nothing but first class. From my initial inquiry through to getting the job done…
Graham C
Here’s why you should choose Resinject
Combined 100+ Years Experience
50 Year Product Warranty
Licenced
Builders
Certified Australian Resin
ISO Certified 9001, 14001, 45001
Here’s how our Mining & Resources Repair process works
Prepare
Our experts drill a series of tiny holes in the affected area
Inject
We inject our specially formulated Poly Urethane Resin
Expand
Our Resin fills the voids, hardens instantly which compacts the ground
Result
The area is instantly reinforced and even re-levelled if required
Outcome
Assets can be trafficked immediately
Frequently Asked Questions
Subsidence on mining sites happens when the ground sinks or shifts. Common causes include:
- Underground voids collapsing as old tunnels or stopes weaken
- Poorly compacted fill settling over time
- Groundwater changes from dewatering or drainage
- Heavy machinery or vibration loosening the soil
- Weak or reactive soils that move with moisture changes
- Tailings and waste areas consolidating
- Weather impacts such as erosion or heavy rain
These factors reduce ground stability and can lead to gradual or sudden settlement.
By injecting resin beneath affected areas, the soil is compacted and voids are filled. Once hardened, the resin strengthens the ground, halts movement, and prevents recurrence.
We restore workshop floors, conveyor bases, rail tracks, hardstands, and processing areas, trestles and transfer stations, load-out areas and heavy-vehicle bays, haul roads, access roads and rail load-out zones as well as any structure impacted by ground instability.
Yes. Our resins are non-toxic, inert once cured, and meet all Australian safety and environmental standards.
We address weak ground condition, unlevel structures, voids, and sinking infrastructure caused by mining subsidence across all site conditions.
Each project takes a different amount of time, depending on the severity of the subsidence. Our team can advise on a timeline. We recognise the need to work within tight shutdown windows and emergency timeframes, delivering efficient, collaborative solutions with minimal disruption to operations and an unwavering commitment to safety.
All works include a comprehensive performance warranty for long-term structural stability.
Frequently Asked Questions
Injection depth can be critical to ensuring long-term ground consolidation. Each situation varies and the injection depth is determined by the state of the ground. That’s why we inject our resin at multiple and different depths varying between 800mm and 3.5m.
Most residential jobs are finished within a few hours. Bigger projects may take over a day; your Structural Consultant will discuss the time frame as part of the free site assessment and quoting.
Our crew work from a self-contained mobile unit. We generate our own power and bring all the tools and products required to carry out the works.
Drawing on over 60 years’ combined experience, Resinject only uses a resin that has an Australian Standard resin and can be injected to a depth of up to 3.5 metres if necessary with the necessary re-support installed We do offer a 50 year guarantee against shrinkage with our product.
Our generator has been enclosed in a custom-designed cabinet to minimise noise levels, so it is relatively quiet. Drilling may be noisy, but this is completed quickly, and when drilling indoors, we capture the dust with vacuum cleaners and small amounts of water.
On arrival, our crew start by confirming the levels recorded in the initial assessment. We then employ laser equipment to monitor the lifting closely throughout the process, ensuring levelling that is precise to the millimetre.
