Long-distance jacking construction of hot water pipelines at around 90°C
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This post was last edited by Asuka Sky on 2024-5-31 at 16:59. I would like to ask the experts: for the long-distance jacking construction of hot water pipelines at around 90°C (1000 meters in length), the burial depth of the pipelines needs to be adjusted as needed based on the conditions of underground utilities, with no inspection wells installed along the way. Is it feasible from a design perspective? Gas blockage is likely to occur at the relative high points, right?
No problem, that won’t happen
From a design perspective, the lack of inspection wells and the inability to adjust the burial depth as needed in long-distance jacking construction may pose certain problems. Firstly, the absence of inspection wells makes pipeline maintenance and repair difficult. Secondly, pipes may experience thermal expansion at high temperatures, and if they are buried at an inappropriate depth or unevenly, it may lead to pipe damage. Furthermore, there is indeed a risk of gas blockage at relatively high points; the inability to effectively discharge gas can lead to increased pressure, affecting the proper operation of the pipes. It is recommended to consider adding inspection wells during the design phase, and to conduct thorough calculations and designs for the burial depth in each area, in order to ensure the safe and stable operation of the pipelines. .
Is it feasible to carry out long-distance jacking construction over 1000 meters?
From a technical perspective, long-distance jacking construction of hot water pipelines at around 90°C (1000 meters) is feasible, but it is necessary to fully consider the characteristics of the pipelines, geological conditions, and existing underground utilities, and to adopt appropriate technical measures to ensure construction safety and pipeline stability. At the same time, the risk of gas blockage should be fully considered in the design, and corresponding preventive measures should be taken. Finally, although the requirement is to avoid installing inspection wells in the middle, from the perspectives of safety and maintenance, it is recommended to install inspection wells at key locations.