泥水盾构下穿堤防的风险分析及控制研究

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Abstract It is inevitable for the slurry shield to under-pass the embankment in construction of under-river tunnels in urban areas. For the safety of both the embankment structure and construction，resources of risks when slurry shield under-passing the embankment are analyzed in detail，and their causes，impacts and mitigation measures are also studied accordingly. The case history of risk control for slurry shield under-passing the embankment in Hangzhou Qingchun road cross-river tunnel in China confirmed the rationality and feasibility of the suggested risk control measures. Through optimization of slurry shield driving parameters，avoidance of adverse external conditions，in-time monitoring，and setting of detailed emergency countermeasures，some of the risks encountered during slurry shield under-passing the embankment can be reduced or mitigated so as to insure safety of the embankment and construction.

Key words： tunnelling engineering slurry shield embankment risk analysis risk control construction control

Received: 07 December 2010

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https://rockmech.whrsm.ac.cn/EN/Y2011/V30/I5/1034

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