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Grout plant for tunnel project

A grout plant for tunnel projects is a specialized system used in underground construction, especially in Tunnel Boring Machine (TBM) or shielded TBM operations. Its primary function is to prepare and supply grout mixtures used to fill the annular space between the tunnel lining (segments) and the surrounding ground.

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  Content   2025-05-30

A grout plant for tunnel projects is a high-capacity, automated system designed to produce, store, and pump large volumes of grout (cementitious, chemical, or resin-based) for critical tunneling applications. These plants ensure consistent mix quality, rapid delivery, and precise injection – vital for ground stabilization, waterproofing, and segment sealing.

injection pump and mixer
injection pump and mixer

Applications of grout plant for tunnel project:
Shield TBM Tunneling
Pipe Jacking / Microtunneling
Ground Improvement Works
Underground Metro Projects
Mine Tunneling
Sewer & Utility Tunneling

colloidal mixer agitator with pump
colloidal mixer agitator with pump

Types of Grout Used in Tunnel Projects:

Type Composition Use Case
Cement-based Grout Cement, sand, water, bentonite, additives Most common; fills annulus behind segments
Bentonite-based Grout Bentonite, CMC, polymers Low strength, self-leveling; used in soft ground
Two-component Chemical Grout Epoxy, polyurethane, acrylate High-strength sealing; used for water cutoff
Microfine Cement Grout Ultra-fine cement particles For fine cracks and seepage prevention
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