**Inner Epoxy Lined Steel Tunnel Escape Pipeline** has advantages such as low-temperature resistance, high corrosion resistance, high impact resistance, high impermeability, and high mechanical properties, making it suitable for emergency rescue in highway tunnel construction. It is also an ideal pipeline for transporting oil, natural gas, brine, cold air, heating, and water supply lines. A protective layer made of high-density polyethylene with added UV-resistant materials is suitable for media temperatures ranging from -30 to 105°C, with a loss of 1° per kilometer. This cost-effective and practical steel anti-corrosion pipeline is widely used for liquid transportation in petroleum, chemical, fire protection, and domestic applications, with a service life of over 50 years. **Reliability Verification of Inner Epoxy Lined Steel Tunnel Escape Pipeline**: Test Objective: By conducting impact tests on tunnel escape pipelines and steel pipes of similar specifications, the feasibility of using ultra-high molecular weight polyethylene pipes for emergency rescue during highway tunnel collapses is demonstrated. Test Materials: 1. Q235 spiral seam submerged arc welded steel pipe, with specifications of Φ620×10. Yield strength σ1=215GPa, elastic modulus E1=210MPa; Poisson's ratio ν1=0.25. 2. Sichuan 800 escape pipeline, with specifications of Φ800×30, yield strength σ1=3.7GPa, elastic modulus E1=700MPa; Poisson's ratio ν1=0.42. Test Requirements and Methods: After being subjected to impact, the tunnel escape pipeline had stones bounced off with almost no damage, indicating good impact resistance; the steel pipe was flattened and underwent permanent deformation upon impact. The results show that the ultra-high molecular weight polyethylene tunnel escape pipeline has extremely high impact resistance, and external impacts cannot cause it to rupture. Moreover, it has good toughness and the ability to absorb impact energy, absorbing most of the impact energy during the process of being struck by large stones, thus reducing damage to the pipeline. The impact resistance of the steel pipe is inferior to that of the tunnel escape pipeline, and it experiences permanent deformation after being struck by stones, making recovery difficult. Conclusion: The 800 escape pipeline was used for the first time to design an emergency rescue passage for highway tunnel construction. Additionally, the structural dimensions of the ultra-high molecular weight polyethylene tunnel escape pipeline conform to ergonomic principles, with a simple structure that is easy to assemble and disassemble. Furthermore, the impact resistance comparison tests between the tunnel escape pipeline and steel pipe validated the reliability of the ultra-high molecular weight polyethylene tunnel escape pipeline for emergency rescue in highway tunnel construction. **Structural Design of Steel Tunnel Escape Pipeline**: The diameter design of the **Inner Epoxy Lined Steel Tunnel Escape Pipeline** is based on the research findings of American expert Alvin R. Tilly, a pioneer in anthropometry. It is known that during crawling movement, the most comfortable crawling height is 800mm, and the crawling length is 1520mm, as shown in the figure below. The ergonomic requirements during the crawling process: Alvin R. Tilly indicated that the minimum diameter of a circular hole for crawling through with the entire body entering is 585mm. Therefore, the inner diameter of the new emergency rescue passage for tunnel construction must be ≥585mm to ensure normal passage of the human body. At the same time, considering the actual conditions of the tunnel construction site, the outer diameter of the emergency rescue passage should not be too large to avoid significant impact on construction; hence, the outer diameter of the polyethylene pipeline is set at 630mm. Henan Deyuan Rubber and Plastic Products Co., Ltd. is a high-tech enterprise integrating R&D, production, and sales, specializing in the production of ultra-high molecular weight polyethylene pipelines, **Inner Epoxy Lined Steel Tunnel Escape Pipelines**, steel belt reinforced polyethylene (HDPE) spiral corrugated pipes, HDPE pipes, internally and externally coated composite steel pipes, 3PE anti-corrosion pipes, lined plastic pipes (steel-lined PO pipes, steel-lined PE pipes, steel-lined fluoropolymer pipes), lined rubber pipes, and other series of multi-specification pipe fittings and pipes. The products are mainly applied in industries such as chemicals, electricity, mining, metallurgy, medicine, water conservancy, municipal engineering, construction, environmental protection, dredging, and coal washing. Interested customers are welcome to visit our company for inspection, and we look forward to your arrival! Address: Kaifeng Industrial Gathering Area, Entrepreneurship Avenue, Luoyang City.