|
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.
|
|
Received: 07 December 2010
|
|
|
|
2011, Vol. 30 
