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Injection Grout Pump For Underground

An Injection Grout Pump for Underground is a high-performance machine used to inject grout materials into the ground under pressure. These pumps are essential in underground construction, mining, tunneling, and infrastructure projects where ground stabilization, waterproofing, or structural reinforcement is required.

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  Content   2025-05-16

An injection grout pump for underground is a high-performance machine used to inject grout materials into the ground under pressure. These pumps are essential in underground construction, mining, tunneling, and infrastructure projects where ground stabilization, waterproofing, or structural reinforcement is required.

container type high-pressure injection pump
container type high-pressure injection pump

What Is an Injection Grout Pump?
An injection grout pump is a positive displacement pump that delivers grout mixtures (cement-based, chemical, microfine, polyurethane, etc.) into subsurface voids, cracks, joints, or porous formations.
These pumps are designed to:
– Deliver consistent flow rates
– Operate at high pressures (up to 500bar)
– Handle abrasive or chemically aggressive materials
They are especially crucial in underground environments where safety, precision, and durability are vital.

Drilling mud jet grout pump
Drilling mud jet grout pump

Key Underground Applications:
Curtain Grouting: Forming a grout curtain to control groundwater seepage
Contact Grouting Filling gaps between ground and tunnel linings
Fracture Grouting Injecting grout to stabilize fractured rock masses
Soil Stabilization /Jet Grouting Strengthening weak soils using cement or chemical grouts
Waterproofing & Leak Sealing Using expanding resins or silicates to seal cracks
Rock Bolt Grouting Anchoring bolts in drilled holes to reinforce rock structures

jet grouting triplex pump
jet grouting triplex pump

Features of Underground Injection Grout Pumps:
High Pressure Output Up to 10,000 psi for deep penetration into cracks and fissures |
Adjustable Flow Rate Allows precise control over grout volume |
Abrasion Resistance Handles sand-laden or cement-based grouts |
Mobility & Compact Design Easy to maneuver in tight underground spaces
Chemical Compatibility Resists corrosion from aggressive chemicals
Remote Operation Options Enhances operator safety in confined areas

Full Automatic Jet Grouting Equipment
Full Automatic Jet Grouting Equipment

Tips for Operating Underground Injection Grout Pumps:
1. **Select the Right Grout Type**
– **Cementitious grouts**: Rock fissures and large voids
– **Microfine cement**: Fine cracks and low-permeability zones
– **Polyurethane resins**: Water leak sealing and expansion grouting
– **Sodium silicate**: Fast-setting chemical grouts for emergency use
2. **Monitor Pressure & Flow Rates**
– Avoid over-pressurizing which can cause unintended fracturing
– Adjust flow based on formation absorption rate
3. **Keep Equipment Clean**
– Flush system thoroughly after each use
– Replace worn seals, valves, and plungers regularly
4. **Use Safety Equipment**
– High-pressure hoses and connections can be dangerous if they fail
– Always follow lockout/tagout procedures
5. **Plan Injection Sequence**
– Stage injections to ensure full coverage
– Use packers and sequential drilling to avoid bypassing areas

Skid mounted grout pumping unit in 20ft container
Skid mounted grout pumping unit in 20ft container

 

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