Anchoring is widely used in tunnel for pre-support, slope, coast, mine, water conservancy projects, Building foundation, roadbed reinforcement and geological faulty treatment such as landslip, crack, and sink age, it’s irreplaceable in narrow construction environment.
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Self Drilling Hollow Bar Anchor System:
Comprised of a hollow threaded bar attached with a drill bit that performs drilling. The hollow bar allows air and water to freely pass through the bar during drilling to remove debris, after drilling at the required depth is completed, grout fills the hollow bar through the pressure for their requirement and completely covers the entire bolt.
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Coupler:
The coupler can be used to join hollow bars and extend the bolt length, it means the anchor can be elongated with the couplers.
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Plate and Nut:
The plate and nut are installed according to their design requirement.
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Drill Bit:
The drill bit would be selected at the choice of ground condition.
Frequently Asked Questions
What is the primary function of the Self Drilling Hollow Bar Anchor System?
It serves as a pre-support and reinforcement solution for tunnels, slopes, and foundations, allowing for simultaneous drilling and grouting in challenging geological conditions.
How does the hollow bar assist in the drilling process?
The hollow center allows air and water to flush out debris during drilling and subsequently acts as a conduit for pressure grouting to secure the bolt.
Can the length of the anchor bolts be customized?
Yes, by using dedicated couplers, the hollow bars can be joined together to extend the overall length of the anchor as required by the project design.
How do I choose the correct drill bit type?
Selection depends on ground conditions: Steel cross bits are for loose conditions, while TC (Tungsten Carbide) bits are designed for soft to medium rock formations.
Is this system suitable for narrow construction environments?
Absolutely. The self-drilling system is specifically designed to be irreplaceable in confined spaces where traditional drilling equipment cannot operate effectively.
What components make up the complete anchor system?
The system typically includes the hollow threaded bar, a specialized drill bit, couplers for extension, and the necessary plates and nuts for final installation.
KAT DRILLING
