"Overview of trenchless pipeline reconstruction technologies. Part 1. Non-destructive methods "

Abstract

"Overview of trenchless pipeline reconstruction technologies. Part 1. Non-destructive methods "

Abramyan S.G., Ishmametov R.Kh.,Oganesyan O.V.,Oganisyan V.A.,Davudov R.I

Incoming article date: 13.12.2016

The paper summarizes the most common trenchless technologies among the variety of pipeline reconstruction methods which are implemented without destroying old pipelines. It demonstrates the key benefits of the methods under review as well as their principal deficiency. The significance of these technologies, according to the author, is associated with environmental safety and economic efficiency they assure for construction works performed under unstable soil conditions as part of dense urban development. Special attention is given to such relining methods as Swagelining, Upex, Rolldawn, and U-Liners, and more light is shed on innovative technologies, such as GFK-liner (Germany) and Insituform (Great Britain). It is emphasized that the pipeline relining methods discussed in the paper, along with their undisputable strengths, have certain deficiencies, primarily related to a decreased throughput capacity of pipelines. This is why the need for use of nano and composite materials to line the inner space of a reconstructed pipeline should be made a priority.

Keywords: pipeline, relining, technology, method, fiberglass sleeve, polyethylene pipe, sliplining, pushing, composite material, environmental safety