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- W4384698133 abstract "After tunnel construction completion, it’s difficult to ensure the drying tunnel due to the distribution of rock joint fractures and confined water. Usually, the pipeline operation in underwater tunnels is filled with water. In this article, it collected some serious pipeline displacements, pipe deformations, and bolts falling off during the later operation of an oil and gas pipeline tunnel. It uses the finite element calculation method according to the actual working conditions of the pipeline installation to simulation of the pipeline state taking consideration of the combined factors such as internal pressure, temperature difference, water buoyancy load, and collar constraints. Three operation conditions of water filling operation, pumping inspection and refilling are considered, and simulation calculations are performed. The calculation results show that although the pipeline is in a safe stress state, but the bearing bolts near the pipe elbow have excessive stress. The results of numerical calculations explain the cause of the problem, and put forward suggestions for pipeline repair as a basis." @default.
- W4384698133 created "2023-07-20" @default.
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- W4384698133 date "2023-07-18" @default.
- W4384698133 modified "2023-09-27" @default.
- W4384698133 title "Stress analysis and suggestions for pipelines in underwater drilling and blasting tunnels" @default.
- W4384698133 doi "https://doi.org/10.1117/12.2679504" @default.
- W4384698133 hasPublicationYear "2023" @default.
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