Excellent durability, safety, and workability! Economical and high-quality tunnel repair and reinforcement work.
The "PCL method" of Nippon Samicon is a self-supporting lining method that constructs PCL panels divided into multiple segments on the upper half of the tunnel's interior. It is primarily used in road tunnels, but can also be utilized for the repair and reinforcement of waterway tunnels, as well as for the lining of newly constructed NATM tunnels. PCL panels are highly durable due to strict quality control, and their surfaces can be treated with paint or embedded with lighting inserts. Furthermore, by filling the space between the PCL panels and the surrounding ground with backfill, high stability can be expected even under unexpected loads. Construction with PCL panels allows for the selection of the optimal method from two options, "spin arm method" and "forklift method," based on various conditions such as traffic constraints, the number of panel segments, mass, construction length, and economic factors. 【Features】 ■ Strict quality control ■ Excellent durability ■ Significant reduction in construction time with specialized erection equipment ■ Approximately 30% cost reduction compared to conventional methods ■ Safety *For more details, please refer to the catalog or feel free to contact us.
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【Achievements】 ■ Juunihei Tunnel (Niigata Prefecture) - Reinforced using a two-part PCL method due to changes in the tunnel lining caused by the Chuetsu Earthquake. ■ Niitakayama Tunnel (Miyagi Prefecture) - Restored the lining of the NATM tunnel damaged by the Iwate-Miyagi Inland Earthquake using a two-part PCL method. ■ Kariba Tunnel (Hokkaido) - Adopted a two-part PCL method for the lining at the junction where the newly constructed NARM tunnel merges with the existing tunnel, allowing for changes in tunnel cross-section and ensuring a one-lane traffic flow in the operational tunnel. ■ Hikata-domari Tunnel (Hokkaido) - Used a two-part PCL method for the lining at the junction of the existing tunnel and the newly constructed NARM tunnel, as well as in the new section, considering constructability. *For more details, please refer to the catalog or feel free to contact us.
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【Purpose】 ■Repair and reinforcement of tunnel linings *For more details, please refer to the catalog or feel free to contact us.
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Company information
Nihon Samicon Co., Ltd. has been engaged in research and development day and night as a specialized manufacturer of road disaster prevention, aiming to protect the safety of life and promote the development of the local economy. We have also promoted cost reduction, including maintenance, as well as labor-saving and efficiency-enhancing methods, and shortened construction periods. Additionally, we have provided products and methods that harmonize with nature. Moving forward, we will continue to learn from nature and contribute to the creation of a safe living foundation.