T103 Hollow Grouting Anchor Bar | Ultra Heavy-Duty Rock Bolt System

1.Technical Specifications

2. Available Components

2.1 Anchor Bar

The T103 anchor bar is the main load-bearing element of the system. Its hollow steel body allows grout to be injected through the center of the bar, while the external thread improves bonding and enables connection with matching accessories.

2.2 Nut

2.3 Coupler

2.4 Bearing Plate

Centralizer 

3. Applications

The T103 Hollow grouting anchor system can be used for:

• Large tunneling projects
• Hydropower stations Underground caverns
• Mining applications
• Subway and train tunnel projects
• Reinforcing foundations
• Stabilizing rock & soil
• Supporting reinforced concrete structures
• Large diameter geotechnical anchoring

4. Installation Process

1. Prepare materials
Prepare the following materials including T103 hollow grouting anchor bar, drill bit, grout material, grouting equipment, nut, coupler, bearing plate and other accessories.

2. Drill borehole
Drill hole at the desired support location as specified in project design. The diameter, depth and direction of the borehole must comply with design requirements.

3. Install T103 anchor bar
Place T103 hollow grouting anchor bar into hole. Check the length of embedment, the exposed length of the anchor and positioning before grouting takes place.

4. Confirm position
Adjust position and spacing of the anchor as needed based on design criteria and actual conditions.

5. Grout injection
Inject grout into the hollow center of the anchor to fully bond the anchor into the surrounding rock, soil or concrete. Proper grouting helps improve load transfer and anchoring strength.

6. Final treatment
Once grout has set, complete any final tightening, adjustment and inspection to ensure proper anchoring strength and longevity.

5. Selection Notes

• Double check you have the correct T103 size, length, and quality for your project.
• Choose the right anchor based on soil/ground conditions, design load and construction requirements.
• Check grouting pressure, grout strength and curing times match project specifications.
• Always use quality accessories that are compatible with the T103 thread pattern.
• Purchase from a trusted supplier that has proven quality control processes and support.

6. FAQ

6.1 What is the use of a T103 hollow grouting anchor bar?
A T103 hollow grouting anchor bar is a heavy duty threaded steel anchor that has a hollow center. It is used for anchoring as well as injection of grout into underground excavations, tunnels, mining projects and foundations.

6.2 What is the difference between a T103/78 and a T103/51?
The T103/51 has a smaller inner diameter and thicker overall cross-section which allows it to have a higher load rating. It is best used for applications where higher strength is required.

6.3 Where can I use T103 hollow grouting anchors?
You can use the T103 hollow grouting anchor system in large scale tunnel projects, hydropower stations, underground caverns, mines, foundation reinforcement projects, subway projects and other geo technical works.

6.4 Can I inject grout into a T103 anchor bar?
Yes, because the anchor bar is hollow you can inject grout through it. Injecting grout can help fill up the drilled borehole and help adhere the anchor to the surrounding rock, soil or concrete.

6.5 What accessories can be used with T103 anchors?
Nut, coupler, bearing plate, centralizer and other matching anchors accessories can be used.

Looking for a high strength anchor bar for a tunnel or underground project?

Get in touch today to learn more about T103 hollow anchor bars, receive technical support and a quote.