Hollow Anchor Bar: Engineering Stability for Underground and Geotechnical Applications
Release time:
2024-08-23
A Hollow Anchor Bar (Hollow Rock Bolt) is a high-strength, tubular steel reinforcement system designed for ground stabilization in geotechnical and mining engineering. Featuring a central hollow channel for grout injection, it combines load-bearing capacity with efficient installation, making it ideal for securing unstable rock masses, slopes, and underground structures.
Product Overview
A Hollow Anchor Bar (Hollow Rock Bolt) is a high-strength, tubular steel reinforcement system designed for ground stabilization in geotechnical and mining engineering. Featuring a central hollow channel for grout injection, it combines load-bearing capacity with efficient installation, making it ideal for securing unstable rock masses, slopes, and underground structures.
Key Features
Tubular Design: Central bore enables simultaneous drilling, anchoring, and grouting, reducing installation time.
High Load Capacity: Made from alloy steel (e.g., Grade 500/700) or stainless steel, with yield strength up to 1,100 MPa.
Corrosion Resistance: Optional hot-dip galvanizing or epoxy coatings for harsh environments.
Threaded Ends: Compatible with plates, nuts, and couplers for modular assembly.
Core Advantages
Rapid Installation: Integrated drilling-grouting process minimizes downtime in tunneling or mining operations.
Enhanced Bonding: Grout fills the hollow core and surrounding fissures, creating a unified reinforcement system.
Adaptability: Suitable for weak rock, soil, or fractured zones where traditional anchors may fail.
Real-Time Monitoring: Permits post-installation grout replenishment or pressure testing.
Applications
Tunnel Boring: Stabilizes excavation faces in rail, road, and hydropower tunnels.
Slope Stabilization: Prevents landslides in highway cuttings or natural terrains.
Mining Shafts: Reinforces roof and walls in underground coal/metal mines.
Underground Structures: Secures parking garages, metro stations, and deep foundations.
Technical Specifications
Diameter: 25mm – 51mm (customizable)
Length: 1m – 12m (standard or tailored)
Standards: ASTM F432, ISO 16047, or project-specific certifications.
Why Choose Our Hollow Anchor Bars?
Certified Quality: Third-party tested for tensile strength, elongation, and fatigue resistance.
Custom Solutions: Adjustable grout ports, hybrid materials (e.g., fiberglass composite), and anti-seismic designs.
Global Compliance: Meets EU, US, and Asian safety regulations for infrastructure projects.
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