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UDC 628.147:658.26.004.18

Orlov V. А., Shlychkov D. I., Koblova E. V.

The efficiency of pipeline renovation with profiled polymer pipes

Summary

Presented are the results of analytical studies of probable deflection by partial exfoliation of the polymer pipe because of elliptical form or defects of the inner surface of the old pipeline. The effect of thermal expansion on the condition of the exfoliated part of the polymer pipe after renovated pipe section commissioning was also studied. Calculated examples of probable inversed deflection of U-liner at different exfoliation lengths and different temperatures are given. Admissible values of linear damages of an old pipeline that do not result in limit deflection during trenchless renovation are determined.

Key words

trenchless renovation , profiled polyethylene pipeline , thermal effect

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