南干渠输水隧洞盾构掘进施工质量问题浅析及施工质量保证措施

Brief analysis on construction quality problems from shield-tunneling of water conveyance tunnel for South Main Canal and guarantee measures for its construction quality

通过对北京市南水北调配套工程南干渠输水隧洞盾构掘进施工进行分析和研究,找出影响盾构管片拼装、壁后注浆质量的主要原因,提出质量保证措施。研究结论可为类似工程提供参考。

Through the analysis and study made on the construction of the shield-tunneling of the water conveyance tunnel for the South Main Canal--an ancillary works to the South-to-North Water Transfer Project in Beijing, the main causations those impact the qualities of the assembly of shielding segments and the grouting behind them are found out, and then the relevant quality guar- antee measures are put forward as well. The study conclusion can provide some references for the similar projects concerned.