Training on grouting equipment at mine site

Grouting Equipment On-site Training

Location: Chihuahua, MEXICO
Sector: Mines
Category: Cement Grouting

Description

An international mining company, with operations in Canada, Europe and Latin-America, contacted us to provide specialized training on grouting equipment.

One of our technicians traveled to a mine site, located in northern Mexico, to conduct training in Spanish to their personnel on the maintenance and use of their hydraulic grout plant.

During the training session, our specialist, as well as providing detailed theoretical information, also presented practical instructions on the proper maintenance, operation and safety precautions of the plant.

Additionally, guidelines for the safe operation on high-pressure grouting applications was an important part of the training session

Cement grouting in open trench

Soil Stabilization Program for Utility Contractor

Location: Toronto, ON
Sector: Utilities
Category: Cement Grouting

Description

An underground utility contractor encountered loose fill after initial exposure of an open trench excavation. A Hydrovac was used to vacuum excavate the trench daylighting locates when fill began to collapse into the trench from beneath the sidewalk and road.

From the perimeter of the trench, parallel holes were drilled at 3-foot intervals, at alternating depths of 10 feet and 5 feet. 1/2 inch brake lines were driven into the subgrade using a hammer drill, to the correct depth. 60 litres of cement grout were injected into the drilled holes through the brake lines, permeating into the loose fill, binding with the fill to form a cement stabilized base.

Cement grout injection using Multiurethanes Microfine Cement and Superplasticizer, 1/2 inch Brake Lines, four chemical pumps, and a CG Mixer 22E were used to stabilize the backfill along the perimeter of the open trench. The stabilization program eliminated the potential for collapse of the open trench, allowing for the utility contractor to continue the excavation operation without incident.

Grouting Tunnel Cross passage

Cement Grouting to Fill Voids in Tunnel Cross Passage

Location: Toronto, ON
Sector: Infrastructure
Category: Cement Grouting

Description

A public transportation agency encountered water infiltration into the subway system, due to voids behind the cross passage section of the tunnel.

Working within the cross passage segment of the tunnel, 15 investigative holes were drilled to identify the location of the voids which contained water. Mechanical packers with ball valve assembly were then installed into the drilled holes where the presence of water inflow was observed. Cement grout was continuously injected into the drilled holes via the mechanical packers until grout was detected resurfacing from an adjacent open valve. The resurfacing of grout indicated that the cavity had been filled, as the water had been displaced away from the cross passage section.

Cement grout injection using Multiurethanes Microfine Cement, mechanical packers and a chemical grout pump were used to fill the voids behind the cross passage section. The method eliminated the infiltration of water into the tunnel and allowed utility contractors to work safely within the cross passage.

Equipment Customization for Cement Grouting

Equipment Customization for Cement Grouting

Location: Mount Pleasant, NY
Sector: Utilities
Category: Cement Grouting, Chemical Grouting

Description

A municipal water supply organization was constructing a large water treatment facility situated on the outskirts of New York City. Construction crews encountered a leaking bypass pipe at a depth of 400 feet below the surface between two adjacent deep water supply shafts.

Multiurethanes grouting specialists supported decommissioning operations undertaken by a deep dive contractor to fill the defective bypass pipe using cement grout.  In addition, they prepared customized electrical equipment for this underwater grouting project, including a diesel generator and an electrical control panel with variable frequency drives to operate colloidal mixer, agitator tanks, and progressive cavity pumps.

Buried tanks decommissioning

Buried Tanks Decommissioning

Location: Sudbury, ON
Sector: Mines
Category: Cement Grouting

Description

Multiurethanes‘ technical team worked with a consulting engineering company to decommission two large buried tanks located on the Guindon North Dam at the Vale Tailings site in Sudbury, Ontario.

The designed grout mix for filling the tanks was a slag-cement-bentonite mixed in a batching plant set up on site. Our grouting specialists provided technical leadership to deliver 75 cubic meters of bentonite slurry preparation and successfully complete the decommissioning work.

consolidation grouting for construction of a tailings dam

Consolidation Grouting in a Tailings Dam

Location: Sudbury, ON
Sector: Infrastructure
Category: Cement Grouting

Description

A large mining company required upgrades to an existing tailings storage facility to comply with current regulatory standards. The general contractor undertaking the required upgrades retained the services of Multiurethanes to supply cement grouting equipment and experienced grouting specialists for consolidation grouting of fractured rock beneath the alignment of the new tailings dam.

The grout curtain consisted of three rows of holes, drilled to a nominal depth of 10 m. Cement grouting equipment consisted of inflatable borehole packers, electromagnetic flowmeters, progressive cavity pumps, and paddle grout mixers.

Cement Grouting for Drill Hole Abandonment Ontario

Cement Grouting for Drill Hole Abandonment

Location: Chapleau, ON
Sector: Mines
Category: Cement Grouting

Description

We assisted a drilling contractor by providing technical expertise, grouting equipment and materials to complete a drill hole abandonment operation at a gold mine in Central Ontario.

The mining company required exploration drill holes to be fully cemented after completion of drilling to the required depth while minimizing loss of cement into the adjacent rock formations. Ground conditions included open faults and fractures that allowed drilling fluids to migrate between adjacent holes.

Our crew worked together with the contractor to efficiently apply the required grouting solution and minimize any negative impact on the environment.

cement grouting for ventilation raise construction

Ventilation Raise Construction in a Gold Mine

Location: Dubreuilville, ON
Sector: Mines
Category: Cement Grouting

Description

An expanding underground gold mine required the construction of a new ventilation raise through fractured, water-bearing rock conditions.

Working in conjunction with a diamond drilling contractor to drill perimeter holes parallel to the alignment of the planned raise, Multiurethanes supplied cement grouting equipment and experienced personnel for cement grouting work to fill open fractures prior to drilling the pilot hole and reaming of the ventilation raise to the final diameter.

The cement grouting equipment provided consisted of water supply equipment, inflatable borehole packers, electromagnetic flowmeters, progressive cavity pumps and paddle grout mixers.