Geonex DTH Hammers and Overburden Systems – Efficient Drilling and Casing Solutions
Geonex DTH hammers and overburden systems provide powerful drilling and reliable casing installations in solid rock, mixed soils, and unstable ground. Designed for efficiency and precision, our solutions ensure stable boreholes and seamless drilling progress in demanding trenchless projects.
What separates us from others?
Contractors trust Geonex drilling rigs because they deliver reliable performance, faster drilling, and lower overall costs.
Optimized Drilling Tools for Every Ground Condition
Geonex DTH Hammers and Overburden Systems
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How does DTH Hammer Work?
A DTH (Down-The-Hole) hammer is a pneumatic impact tool used in horizontal boring. It delivers energy directly to the pilot bit at the front of the casing, breaking hard ground efficiently while pulling the casing forward. Because the hammer operates inside the bore, it maintains energy transfer and direction control, making it ideal for mixed soils and rock.
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How Overburden Systems Work?
Overburden systems are designed for boring through unstable or layered ground—such as clay, gravel, cobbles, and boulders. The system includes a ring bit and pilot bit combination that bores ahead while simultaneously advancing the steel casing. This keeps the borehole stable and aligned, even before reaching solid rock.
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Which Boring Tools Fit Your Project Best?
Selecting the right boring tools depends on casing diameter, soil conditions, and bore length. Geonex offers a full range of compatible tools—DTH hammers, pilot bits, ring bits, augers, and adapters—optimized for each rig model. Our team can help configure the right tooling setup for your project environment.
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How Hole Openers Are Used in Horizontal Boring
Hole openers are used to expand an existing bore to a larger diameter. In horizontal boring, they are typically pulled behind the casing or mounted after the pilot pass to accommodate larger pipe sizes. Geonex hole openers are available in multiple profiles for different soil types and diameter requirements.
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DTH auger rods in use
DTH auger rods are used behind the hammer to remove loose material from the casing during drilling. They are especially useful in mixed or collapsible soils. The auger rotates with the drill string and carries spoil backward, maintaining a clean bore path and preventing blockages.
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