A model test device is
developed to simulate water seepage and ice formation on tunnel linings in cold
regions based on surface water supply conditions. This device allows real-time monitoring of the surrounding rock′s
temperature and the ice formation process on leak sections. Furthermore, Image-J software measures the cross-sectional area
of ice, and linear regression analysis is used to analyze the ice development
process. The authors examine distribution of temperature of the surrounding
rock at the leakage point and the evolution of ice blockage rate under
different wind speeds and initial rock temperatures. Following are the findings
from the study: (1) At the beginning of ice formation on the lining, increased
wind speed and initial rock temperature leads to higher critical temperature at
the leakage point. The temperature of the surrounding rock at this point
gradually decreases with cooling time, following a logarithmic distribution.
Low wind speeds and high initial temperatures result in slow average cooling
rate and prolonged ice formation. At wind speeds of 0.6 and 1.2 m/s, the frozen
circles form in the surrounding rock, and the inner wall ice eventually seals
the leakage section, respectively, halting further ice development. (2) The ice
blockage rate on the lining correlates linearly with time. Low wind speeds and
high initial temperatures delay the onset of ice formation, increase frost
damage severity, and reduce urgency.
LIU Hongyi
,
ZHANG Xuefu
,
QIU Kaichi
,
ZHOU Fanyi
,
LIU Xin
,
SONG Jiayi
. Experimental Study of Water
Seepage and Ice Hanging on Tunnel
Lining in Cold Regions[J]. Tunnel Construction, 2024
, 44(9)
: 1783
-1791
.
DOI: 10.3973/j.issn.2096-4498.2024.09.007
