Forepoling is a method of supporting the weak roof of a mine or tunnel, traditionally used in soft, loose, or caving ground conditions. To apply this method, poles, timber, steel tubes, or slabs are driven into the ground before or during excavation.
The method has been used for centuries in both small-scale mining operations and large tunneling projects. Over time, forepoling has evolved significantly, with traditional wooden supports being replaced by more durable and rigid metal supports. These modern supports provide effective roof reinforcement, even under broken rock conditions.
However, even broken rock conditions are not an obstacle when using the Robit Casing System. Designed for the modern evolution of forepoling—now commonly referred to as a "tube umbrella" system—the Robit Casing System offers a comprehensive solution for ground support during tunneling operations.
The drilling system consists of casing tubes that are drilled through the overburden in an umbrella-shaped pattern, providing support to both the tunnel roof and sidewalls. Once installed, the drill string is removed and the casings are filled with grout to further strengthen and stabilize the ground.
The Robit Casing System allows for efficient installation of casing tubes with low torque requirements and is fully compatible with Robit drilling bits and rods.
Robit is exclusively distributed in the Philippines by Uptime Earthmoving Solutions, Inc.
For product inquiries, please contact:
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