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Aug 30, 2024
Installation of High-Pressure Pipelines in Complex Topographical Settings Utilizing Microtunneling
Authors: Erez N. Allouche, Ph.D., P.Eng. [email protected], Darren O’Toole [email protected], and Jake Fei [email protected]Author Affiliations
Publication: Pipelines 2024
ABSTRACT
Microtunneling is an underground method of constructing pipelines using a remotely controlled, laser guided, steerable boring machine to install a pipe or casing, commonly a reinforced concrete pipe, using pipe jacking techniques. Planning considerations, design, and execution of two-pass microtunnel crossings must account for the limitations, capabilities, and operating loads of both, the casing pipe and the carrier pipe to result in a cost-effective design that minimizes costs and construction risks. The paper will describe five recently completed two-pass tunnels for high pressure pipelines, ranging in length from ~120 m to several kilometers, completed as part of the Transmountain Expansion Pipeline in a wide range of geological and hydrogeological conditions while crossing critical infrastructure networks and environmentally sensitive areas.
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Published online: Aug 30, 2024
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1Stantec Consulting, Edmonton, AB, Canada. Email: [email protected]
2Tunneling Company, Kamloops, BC, Canada. Email: [email protected]
3Stantec Consulting, Edmonton, AB, Canada. Email: [email protected]
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