Henan Deyuan Rubber and Plastic Products Co., Ltd. produces tunnel escape pipes with specifications of Φ630*22mm and Φ800*30mm. Our company has the most advanced ultra-high Φ800 escape pipe production line in the country, with large output, good quality, low prices, and complete specifications. Direct sales of tunnel escape pipes from the manufacturer in Luoyang Tunnel escape pipe manufacturer, and we welcome domestic customers to inquire by phone. Luoyang Metro Tunnel Escape Pipe Reliability Verification: Test Objective: Through impact tests comparing new tunnel escape pipes with steel pipes of similar dimensions, we aim to demonstrate the feasibility of using ultra-high pipes for emergency rescue in the event of road tunnel collapses. Test Materials: 1. Q235 spiral seam submerged arc welded steel pipe, specification Φ620×10. Yield strength σ1=215GPa, elastic modulus E1=210MPa; Poisson's ratio ν1=0.25. 2. New type of tunnel escape pipe (molecular weight approximately 2.5 million), specification Φ636×24, yield strength σ1=3.7GPa, elastic modulus E1=700MPa; Poisson's ratio ν1=0.42. Test Requirements and Methods: Direct sales of tunnel escape pipes from the manufacturer in Luoyang Tunnel escape pipe manufacturer Using steel pipes of similar specifications, a heavy object will be freely released from a height of H = 10m from the top of a circular pipe to conduct an impact comparison test, verifying the reliability of the new tunnel escape pipe. 1. The impact test specimen is a block of granite, initially selecting a rock diameter of 0.67m. The rock parameters are: elastic modulus E=40MPa; Poisson's ratio: ν1=0.2; density ρ1=2500kg/m3; rock weight W=400kg. 2. The circular pipe cushion is made of evenly placed sandbags, with a thickness of 250mm and width of 800mm. The ultra-high Φ800 escape pipe is placed freely on a flat cushion during tunnel construction escape scenarios. When subjected to impact loads from falling rocks, the bottom of the pipe mainly experiences vertical and lateral friction constraints from the cushion. The distance of the impact specimen from the top of the circular pipe primarily depends on the excavation height of the tunnel profile. In this experiment, the maximum height H from the center top of the tunnel to the top of the circular pipe is taken as 10m, from which the block of stone is freely released to impact both the new tunnel escape pipe and the steel pipe. The results show that after being impacted, the stone block is ejected, and the pipe sustains almost no damage, demonstrating good impact resistance; whereas the steel pipe is crushed and undergoes deformation upon impact. Direct sales of tunnel escape pipes from the manufacturer in Luoyang Tunnel escape pipe manufacturer To clarify the magnitude of the impact energy, calculations of the impact force of the rock falling freely from a height of 10m and the deformation of the circular pipe are performed. The instantaneous speed of the rock during free fall can be derived from the conservation of energy, Vt=14m/s. At the same time, the impact force and deformation experienced by both the new tunnel escape pipe and the steel pipe are shown in Table 2. From the results, it can be seen that the impact energy of the rock falling from a height of 10m is very large. At the same time, the new tunnel escape pipe has extremely high impact resistance, and external impacts cannot cause it to rupture. Furthermore, it exhibits excellent toughness and the ability to absorb impact energy, reducing damage to the pipe during the impact of large stones. The impact resistance of steel pipes is inferior to that of the new tunnel escape pipe and they undergo permanent deformation after being struck by stones, making recovery difficult. Conclusion: This is the first time that a new type of tunnel escape pipe has been designed for emergency rescue passages in road tunnel construction. Additionally, the structural dimensions of the new tunnel escape pipe comply with ergonomic principles, featuring a simple structure that is easy to assemble and disassemble. Subsequently, the reliability of the new tunnel escape pipe for use in emergency rescue for road tunnel construction has been validated through comparative impact tests with steel pipes. Raw materials are uniformly supplied by the Shanghai Chemical Research Institute, with a stable molecular weight greater than 2.5 million and a wealth of experience. Massive scale: covering an area of 2000 acres, with 31 ultra-high pipe production lines, operating 24 hours a day. After-sales service: one-year warranty, providing measurement and installation after-sales services. Direct sales of tunnel escape pipes from the manufacturer in Luoyang Tunnel escape pipe manufacturer 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 pipes, ultra-high Φ800 escape pipes, steel belt reinforced polyethylene (HDPE) spiral corrugated pipes, HDPE pipes, inner and outer coated composite steel pipes, 3PE anti-corrosion pipes, lined plastic pipes (steel lined PO pipes, steel lined PE pipes, steel lined fluorine pipes), rubber lined pipes, and other series of multi-specification pipe fittings and pipes. The products are mainly used in the chemical, electric power, mining, metallurgy, pharmaceutical, water conservancy, municipal, construction, environmental protection, dredging, and coal washing industries. Customers interested are welcome to visit our factory for inspection, and we look forward to your visit!