CAO Jing-guo,SHI Dong-you,DONG Ze-zhang,et al.Application of Rotary Cured-in-Place Pipe(CIPP) in Urban Drainage Pipe Rehabilitation[J].China Water & Wastewater,2021,37(6 6):128-133.
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Application of Rotary Cured-in-Place Pipe(CIPP) in Urban Drainage Pipe Rehabilitation

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第37卷 Number: 6 6 Page: 128-133 Column: Date of publication: 2021-03-17
Author(s):
CAO Jing-guo1; 2; SHI Dong-you1; DONG Ze-zhang1; ZHANG Da-qun2; ZHANG Jun3
(1. College of Chemical Engineering and Materials Science, Tianjin University of Science Technology, Tianjin 300457, China; 2. Tianjin Water Industry Engineering Equipment Co. Ltd., Tianjin 300070, China; 3. Chongqing Kenawei Environmental Protection Technology Co. Ltd., Chongqing 404100, China)
Keywords:
drainage pipeline; trenchless pipeline rehabilitation; cured-in-place pipe
Abstract:
The design, quality inspection and engineering application of trenchless rotary cured-in-place pipe (PICC) for a drainage pipeline in Yongchuan District, Chongqing were introduced. The results show that as for a DN600 harmed pipeline,with designed water pressure of 6 kPa, designed hose thickness of about 9 mm, and the inner and outer layer widths of about 1 770 mm and 1 700 mm respectively, the tensile strength of the hose joint is about 7.45 MPa, which could meet the construction requirements. After rehabilitation of a 140 m harmed pipeline, there were no bulging, cracks and wrinkles for inner wall of the cured pipe. The initial structural performance meets the requirements of Technical Specification for Trenchless Rehabilitation and Renewal of Urban Sewer Pipeline(CJJ/T 210-2014).
Last Update: 2021-03-17