کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
310972 533423 2007 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of temperature control on a tunnel in permafrost
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
پیش نمایش صفحه اول مقاله
Effect of temperature control on a tunnel in permafrost
چکیده انگلیسی

A key problem for tunneling in permafrost is how to coordinate the excavation and lining installation in a manner that allows good excavation productivity but installs the lining quickly enough to avoid stability problems caused by thawing of the rock around the tunnel. Excavation progress and tunnel stability benefits from a lower temperature of the rock, while construction of the lining benefits from a higher temperature for the development of concrete strength. Using finite element analyses of the temperatures inside a tunnel verified by physical measurements in a tunnel in permafrost, stability conditions related to the thawing depth and suitable for use during construction have been established. These have been found to be useful as a guide for the sequencing of excavation and lining of tunnels in permafrost.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tunnelling and Underground Space Technology - Volume 22, Issue 4, July 2007, Pages 483–488
نویسندگان
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