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Technologies for sectional trenchless repair of water discharge pipelines Технологии местного бестраншейного ремонта водоотводящих трубопроводов
The article represents an overview and analysis of trenchless technologies used to provide for the leak resistance and strength of dilapidated sections of pipelines made of ceramics, cast iron, asbestos cement and other materials. Sectional pipeline repair technologies, considered by the authors, include those for the repair of loose joints of straight sections of pipelines and loose joints in the points of connection to secondary pipelines. Technologies analyzed by the authors also include those applied for the restoration of pipe shell cracks. Organic resins and bandages are to be used as repair materials.Besides, the authors provide detailed descriptions of the composition and properties of pumping resins injected into pipe cracks to restore the structural strength of pipelines and to assure their further reliable operation.Moreover, the authors assess the basic strengths of the bandage technology, including its low cost, low time consumption, and suitability to various types of pipeline damages (depressurization of joints, cracks, leaks, etc.). Besides, this method does not require any excavations, trenches, hoists or other machines.In particular, sections of underground pipelines, having diameters of 150 – 180 mm, may be repaired by specialized repair robots. Robots may be equipped with special-purpose devices, including cutter heads, bandage application heads, and color motion cameras. Besides, sectional repair of pipelines, having the diameter of up to 600 mm, may be performed using robots produced by Hachler Umwelttechnik, which are particularly efficient if the repair work is needed to be performed in the points of pipeline branching.The choice of specific pipeline repair methods and substantiation of their application are mainly driven by (1) the post-cleaning condition of a pipeline, (2) the findings of the telediagnostics, (3) options for arrangement and use of specialized machinery on location, and (4) feasibility of the pipeline operation in the course of repair works and procedures.
Проведен анализ бестраншейных технологий, позволяющих восстанавливать герметичность и прочностные характеристики ветхих участков трубопроводов из керамики, чугуна, асбестоцемента и других материалов. Основной направленностью рассмотренных технологий местного ремонта трубопроводных сетей является устранение нарушений в стыках на прямолинейных участках трубопроводов и в местах подсоединения боковых ветвей, щелей в теле трубы. В качестве ремонтного материала представлены органические смолы и бандажи из различных конструкций. Описаны этапы реализации отдельных технологий нагнетания специальных клеящих смол в щели и затрубное пространство ветхих водоотводящих сетей с последующей их полимеризацией, обеспечивающей восстановление структуры трубопровода и гарантирующей последующую надежную работу водоотводящей сети.
Technologies for sectional trenchless repair of water discharge pipelines Технологии местного бестраншейного ремонта водоотводящих трубопроводов
The article represents an overview and analysis of trenchless technologies used to provide for the leak resistance and strength of dilapidated sections of pipelines made of ceramics, cast iron, asbestos cement and other materials. Sectional pipeline repair technologies, considered by the authors, include those for the repair of loose joints of straight sections of pipelines and loose joints in the points of connection to secondary pipelines. Technologies analyzed by the authors also include those applied for the restoration of pipe shell cracks. Organic resins and bandages are to be used as repair materials.Besides, the authors provide detailed descriptions of the composition and properties of pumping resins injected into pipe cracks to restore the structural strength of pipelines and to assure their further reliable operation.Moreover, the authors assess the basic strengths of the bandage technology, including its low cost, low time consumption, and suitability to various types of pipeline damages (depressurization of joints, cracks, leaks, etc.). Besides, this method does not require any excavations, trenches, hoists or other machines.In particular, sections of underground pipelines, having diameters of 150 – 180 mm, may be repaired by specialized repair robots. Robots may be equipped with special-purpose devices, including cutter heads, bandage application heads, and color motion cameras. Besides, sectional repair of pipelines, having the diameter of up to 600 mm, may be performed using robots produced by Hachler Umwelttechnik, which are particularly efficient if the repair work is needed to be performed in the points of pipeline branching.The choice of specific pipeline repair methods and substantiation of their application are mainly driven by (1) the post-cleaning condition of a pipeline, (2) the findings of the telediagnostics, (3) options for arrangement and use of specialized machinery on location, and (4) feasibility of the pipeline operation in the course of repair works and procedures.
Проведен анализ бестраншейных технологий, позволяющих восстанавливать герметичность и прочностные характеристики ветхих участков трубопроводов из керамики, чугуна, асбестоцемента и других материалов. Основной направленностью рассмотренных технологий местного ремонта трубопроводных сетей является устранение нарушений в стыках на прямолинейных участках трубопроводов и в местах подсоединения боковых ветвей, щелей в теле трубы. В качестве ремонтного материала представлены органические смолы и бандажи из различных конструкций. Описаны этапы реализации отдельных технологий нагнетания специальных клеящих смол в щели и затрубное пространство ветхих водоотводящих сетей с последующей их полимеризацией, обеспечивающей восстановление структуры трубопровода и гарантирующей последующую надежную работу водоотводящей сети.
Technologies for sectional trenchless repair of water discharge pipelines Технологии местного бестраншейного ремонта водоотводящих трубопроводов
Orlov Vladimir Aleksandrovich (author) / Orlov Evgeniy Vladimirovich (author) / Zverev Pavel Vladimirovich (author)
2013
Article (Journal)
Electronic Resource
Unknown
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