Study on environmental impact of artificial horizontal freezing method in subway connecting passage

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Study on environmental impact of artificial horizontal freezing method in subway connecting passage

Authors
  • Yu, Changyi1, 2, 3, 4
  • Lu, Mingyue5
  • 1 1
  • 2 2
  • 3 3
  • 4 4
  • 5 5
Type
Published Article
Journal
E3S Web of Conferences
Publisher
EDP Sciences
Publication Date
Oct 26, 2020
Volume
198
Identifiers
DOI: 10.1051/e3sconf/202019804023
Source
EDP Sciences
License
Green
External links

Abstract

When the subway is built in complex urban strata, especially when excavating near buildings, it is necessary to strictly control the freezing amount by adopting artificial freezing method. At present, the theoretical calculation is aimed at the frozen rise under ideal conditions, but for complex geological conditions, the simplified model results are difficult to meet the actual requirements. However, numerical calculation can adapt to complex strata and complex boundary conditions. Therefore, in this paper, the environmental impact of artificial horizontal freezing method in subway connecting passage is studied by numerical simulation, and the change of thermophysical parameters with the change of temperature field is considered in the simulation. The simulation method in this paper provides guidance for actual construction.

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