Products
Dual-density Slurry TBM
MAK PLUG
Borehole Waterproofing Agent
MAK PLUG
MAK PLUG is a sealing agent designed to control circulation loss of slurry or drilling fluid during operations such as Conc-Slurry and pressurized slurry shield tunneling, geothermal drilling, and hot spring development. In ground conditions such as sand, gravel, weathered soil, or fractured zones, groundwater veins may cause drilling fluid or slurry to escape, preventing proper excavation pressure formation and resulting in unstable excavation faces or poor discharge of excavated material. MAK PLUG is a non-toxic acrylic absorbent polymer in granular form that can absorb and swell up to 50 times its weight in water, effectively sealing leakage zones and preventing fluid loss. It also helps reduce drill vibration during vertical drilling operations where circulation loss is a concern.
Product Features
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1
Field-Proven Performance
Effectiveness verified in multiple field sites where slurry loss occurred.
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2
High Swelling and Large Particle Formation
Forms large particles even with a small dosage and swells up to 50 times its original size, providing strong void sealing performance.
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3
Rapid Sealing and Loss Control
Quickly seals ground voids and forms a stable barrier, minimizing slurry loss.
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4
Selective Removal Capability
The swollen plug can be easily reduced in size and removed by injecting a high-concentration calcium chloride solution.
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MAK PLUG (Original State)
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Swelling After Contact with Water
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Shrinkage After Calcium Chloride Injection (Removal)
