Tailored trenchless methods for accurate casing and rockhole installations

Geonex offers precise, adaptable solutions—from guided casings in mixed soils to step-by-step reaming in solid rock—for efficient installations with minimal disruption.

Steered Casing System for Mixed Ground

Geonex has developed a patented casing method for projects requiring higher alignment accuracy in variable or layered soils. The system begins with the installation of a guided pilot casing—using walk-over or optical tracking methods—followed by stepwise enlargement of the bore. This approach allows for controlled casing installations up to Ø1.2 m (48”) with improved accuracy and reduced risk. It’s an ideal solution for projects where traditional methods lack precision or stability in heterogeneous ground.

Key benefits

  • Guided pilot tube for precise alignment
  • Stepwise bore enlargement with casing installation
  • Maintains control in inconsistent or soft-to-hard transitions
  • Hole dimensions up to Ø1.2 m (48”)
  • Suitable for urban zones, utility crossings, and HDD support

Efficient Method for Solid Hard Rock

In solid, competent rock formations, Geonex offers a highly cost-effective method that eliminates the need for casing altogether. A straight or steerable pilot hole is drilled using a DTH hammer, then reamed in controlled steps to the desired diameter—up to Ø1.2 m (48”). With no casing friction and simplified fluid management, this method allows for longer bore lengths and easier steering, making it ideal for infrastructure and utility crossings in hard rock environments.

Key benefits

  • No casing required in solid rock
  • Step-by-step reaming from Ø165 mm up to Ø1.2 m
  • Lower friction = longer bore lengths
  • Compatible with push or pull hammer reaming
  • Ideal for pipelines, rock tunnels, and underground utilities

Boring rigs to match your trenchless project size

Horizontal Boring rig HZR220

The Geonex HZR220 is a compact yet powerful horizontal hammer boring rig, designed for urban infrastructure and tight job sites. With a drilling range from Ø139.7 mm to Ø323.9 mm, it delivers high precision and mobility without compromising performance—ideal for electric, cable, and small-diameter pipeline installations.
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Horizontal Boring rig HZR400

The Geonex HZR400 is a mid-sized horizontal hammer boring rig designed for infrastructure projects requiring casings from Ø168.3 mm to Ø508 mm. It offers the right combination of mobility, torque, and stability for crossings under roads, railways, and urban areas—especially where mixed ground or hard layers are present. Suitable for both utility contractors and municipalities looking for a dependable, all-purpose machine.
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Horizontal Boring rig HZR610

The Geonex HZR610 is a powerful and adaptable horizontal boring rig for large-diameter casing installations. Supporting diameters from Ø219.1 mm to Ø812.8 mm, it’s built to deliver high torque and reliable accuracy in longer crossings and heavier ground conditions. Whether you’re boring beneath highways, railways, rivers, or industrial zones, the HZR610 combines force, control, and versatility in one robust system.
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Horizontal Boring rig HZR1200

The Geonex HZR1200 is our largest and most powerful rig, purpose-built for large-diameter casing installations and long-distance crossings. With support for casing diameters from Ø406.4 mm to Ø1219.2 mm, the HZR1200 is ideal for major infrastructure and energy projects where high torque and precise control are essential—even in hard rock or mixed ground.
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Join the companies that trust horizontal hammer boring for tough ground conditions.

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