盾构机带压开仓处理异物施工技术

Construction Technology of Foreign Body Treatment in Tunnel Shield with Pressurized Excavation Chamber Operation

以广佛地铁新城东站~东平站右线盾构机在掘进过程中螺旋机出现故障为背景,经分析排查,推断出土仓内存在异物,并针对此现象,研究了带压开仓一系列措施。从开仓准备到开仓过程中遇到的问题以及针对出现的问题所特制的方案,结果表明,该措施保障了人员、施工的安全以及周边建筑物在可控范围内,同时为类似地铁施工也提供了借鉴和参考。

Based on the screw machine failure appeared in shield tunnelling between the right line of Xincheng East Station and Dongping Station in Guangfo Metro, we could conclude that there are foreign objects in the chamber by the analysis and investigation. According to this phenomenon, we studied a series of measures for pressurized chamber operation, including the special scheme for solving the problems encountered from the opening preparation to the opening process. The results showed that the measures could protect the safety of personnel and construction, and enable the surrounding buildings with- in the controllable range. Meanwhile, it could provide a reference for similar subway construction.