U-Shaped Steel Support | Mining Tunnel Steel Arch Support

1.Technical Specifications

Tolerance reference from the source table:

• Height: +1.0 / -1.5 mm
• Thickness: +0.5 / -1.2 mm
• Width: +1.0 / -3.0 mm
• Support thickness: +0.8 / -0.5 mm

2. Materials

U-shaped steel supports can be produced from:

• Q275B steel
• 20MnK steel
• Other customized steel grades according to project requirements

The material can be selected according to roadway pressure, tunnel size, support spacing and engineering design requirements.

3. Applications 

U-Shape Steel Support is commonly used for underground mining support and civil tunnel support constructions.

It can be applied for:

• Coal mine roadway support
• Deep mine tunnel support
• Soft rock roadway
• Support for loose coal seam roadway
• Protection for underground roadways
• Support of mine arch
• Excavation support for tunnels
• Mining temporary or permanent support
• Supports for underground engineering.

4. Advantages 

U-Shape steel support can provide strong and stable arch structure with good bearing capacity. Can fit with changes in ground pressure to ensure safety of roadway. Especially suitable for supporting in complex mining environment.

As an alternative for timber support, U-Shape steel supports have higher strength and longer service life, with a better reuse value. They are also convenient for installation and recovery, reducing maintenance workload and material resource consumption.

5. Customized Options

We can also manufacture U-Shape Steel Supports based on tunnel drawing and project requirement.

Including but not limited to:

• Size of steel support
• Steel grade
• Arch radius
• Leg length
• Section profile
• Connection accessories
• Surface treatment
• Cut off and bending
• Package method

6. FAQ

Q: What are U-Shape Steel Supports used for?
A: These supports are commonly used for Coal mine roadway support, Tunnel reinforcement support and underground roadway protection, mining arch support and many other types of tunnel excavation support.

Q: What materials can be used?
A: The common material options are Q275B steel and 20MnK steel. Other steel grades can be customized upon engineering requests.

Q: Are U-Shape steel supports reusable?
A: Yes. The product offers a high recovery value and can be reused, making it ideal for mines that need support with high reusable rates.

Q: What size options are available?
A: The available sizes are 25, 29, 36 and 40. Each with different specifications including weight, height, width and thickness.

Q: Can the arch be customized?
A: Yes we offer customization options on support size, arch radius, leg length and connection accessories that can be customized as per tunnel or roadway design.