ISSN 2096-4498
CN 44-1745/U
ISSN 2096-4498
CN 44-1745/U
Received date: 2015-10-27
Revised date: 2015-11-20
Online published: 2015-12-24
As an innovative presupporting method in tunnel construction, FreezeSealing Pipe Roof (FSPR) is applied to Gongbei Tunnel of Hong KongZhuhaiMacau Bridge. An effective freeze control system, which contains master freezing tubes, enhancing freezing tubes and limiting tubes, is established for building up the frozen curtain, maintaining its stability during excavation and controlling the volume of frozen soil to limit frost heave dynamically. Field test is carried out to confirm the real freezing effect. The results of test indicate that the FreezeSealing Pipe Roof can achieve good waterproof curtain in the actual tunnel construction condition. The mode of “hot control” can inhibit the growth of frozen soil wall around limiting tubes, while the “cold control” has influence on the whole frozen wall.
HU Xiangdong , GUO Xiaodong , WANG Qitong , REN Hui , HE Longpeng , DENG Shengjun . Field Test Study on Freezing Technology of FreezeSealing Pipe Roof[J]. Tunnel Construction, 2015 , 35(S2) : 1 -7 . DOI: 10.3973/j.issn.1672-741X.2015.S2.001
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