Survey Analysis of Temperature Field in Cup—-shaped Frozen Soil Wallof Horizontal Freezing Reinforcement for Shield Tunnelling
[1]XIA Jiangtao,YANG Ping.Survey Analysis of Temperature Field in Cup—-shaped Frozen Soil Wallof Horizontal Freezing Reinforcement for Shield Tunnelling[J].Journal of Zhengzhou University (Engineering Science),2010,31(02):30-.
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
31
Number of periods:
2010 No.02
Page number:
30-
Column:
Public date:
2010-02-02
- Title:
- Survey Analysis of Temperature Field in Cup—-shaped Frozen Soil Wallof Horizontal Freezing Reinforcement for Shield Tunnelling
- CLC:
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- DOI:
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- Abstract:
- Based on horizontal freezing reinforcement project for a subway station，a study on the developmentof temperature field in cup—shaped frozen soil wall was carried out by site monitoring．The development char—acteristies of salt—water temperature and soil temperature in freezing zone were analyzed．And the time of fro—zen soil wall closure and the velocity of the growth were calculated during the primary freeze period．Accordingto site monitoring analysis，compared with temperature sensor of the shallower depth in the same observationhole，time of frozen soil wall closure of temperature sensor of the deeper depth was longer and its velocity wasslower in plate reinforced zone，while time of frozen soil wall closure and average velocity of the growth did notchange significantly in cylinder reinforced zone；Average velocity of the growth of frozen soil in plate reinforcedzone was faster than that of cylinder reinforced zone in the inerface between frozen soil and underground con—tinuous wall obviously．Time of frozen soil wall closure was 3 1 d and average velocity of the growth was 20．9mm／d in cylinder reinforced zone．Growth velocity displayed a marked difference in plate reinforced zone，thefast velocity was 60．5mm／d and the slowest one was 35．3mm／d．
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Last Update:
1900-01-01