Rock bolt reinforcement method (existing tunnel reinforcement method)
This is a method for effectively and economically reinforcing the lining with rock bolts in gravelly mountainous areas where it is difficult to achieve anchoring stability.
The "Rock Bolt Reinforcement Method" is a reinforcement method for existing tunnels based on the geological conditions of the surrounding ground. - It involves inserting steel materials deeper based on the slip surface of the soil mass, securing the entire steel structure with grout, and passively generating tensile forces in the steel as the ground deforms, thereby suppressing ground deformation and the occurrence of slips. - This method effectively and economically reinforces the tunnel lining with rock bolt anchoring, especially in sandy and gravelly ground where conventional rock bolt installation has struggled to achieve anchoring strength. 【Features】 ■ Saber EX: A high-pressure water expansion type rock bolt for reinforcement that does not require an anchoring agent. This allows for simultaneous anchoring during installation, reducing the cycle time per bolt and enabling immediate strength development. - The bolts are treated with a high corrosion-resistant coating, contributing to the longevity of the tunnel and ensuring reliable ground retention effects. ■ IBO ZAM: A self-drilling rock bolt that can perform drilling and bolt insertion simultaneously, shortening the cycle time per bolt. - It features an R32 thread rolled along its entire length, making it very easy to handle on-site. It is effective not only as a self-drilling bolt but also as an injection bolt utilizing its hollow structure. *For more details, please refer to the PDF document or feel free to contact us.
- Company：ケー・エフ・シー
- Price：Other
