Polyethylene pipe for non-excavation traction method construction

Abstract

The invention relates to a polythene tubular product used in construction with a non-excavation drawing method. The tubular product is prepared by mixing polythene with a high concentration of more than 60 percent, polythene with a lower concentration of lower than 15 percent and about 10 percent of glass microballoon and talcum powder with a little crystal whisker, tissuemat E, oxidic polyethylene and resin acceptor and then using an extruding and moulding technique. The ring stiffness of the tubular product is 9.8Kn/m2, the tensile-strength is 19.5 MPa and the elongation at break is 386 percent. The inner and the outer wall of the tubular product is smooth, thus the friction resistance is small during the construction and the discharge current capability of fluid is strong when in use. The tubular product has strong strength, good flexibility and good cracking resistance, thereby being able to effectively absorb impact energy and bypass barrier during the construction without damaging other tubes. Therefore, the tubular product is particularly applicable to replacing and maintaining targeted pipelines and segments of a dense underground pipe net group by using the non-excavation method.

Description

1. Technical field [0001] The invention relates to a pipe material, in particular to a pipe material buried underground, specifically a polyethylene (PE) pipe material for non-excavation traction construction. 2. Background technology [0002] Underground pipelines are an important infrastructure for the survival and development of cities. They are responsible for transmitting important information and energy, and are called the lifeline of cities. However, with the continuous development of the world economy, the rapid growth of the population, and the continuous acceleration of the urbanization process, the original pipeline design capacity and operating capacity can no longer meet the requirements, and the pipeline needs to be continuously built, rebuilt and repaired. If large excavation is used for construction, it will cause traffic jams, damage to green gardens, and sometimes because of the existence of rivers, water networks, railways, airports and buildings, it will ...

AI Technical Summary

Problems solved by technology

However, with the continuous development of the world economy, the rapid growth of the population, and the continuous acceleration of the urbanization process, the original pipeline design capacity and operating capacity can no longer meet the requirements, and the pipeline needs to be continuously built, rebuilt and repaired.

If ...