南水北调配套工程中盾构始发与接收技术

Shield launching and arriving technology for ancillary works to South-to-North Water Transfer Project

以北京市南水北调配套工程南干渠工程施工第十三标段盾构施工为例,总结了盾构始发与接收技术。十三标工程自5#盾构井下井始发,先后穿越了40#～42#排气阀井后,抵达5#盾构接收井,完成标段内隧道掘进。本工程线路中间设置40#～42#排气阀井,排气阀井先行施工,盾构后续穿越,共四次始发、四次接收,进出洞频繁。最终通过盾构技术的应用及合理的施工筹划,顺利实现穿越,并实现连续两月盾构月掘进过千米的记录。

By taking the shield construction of the No. 13 bid-section of the South Main Canal ancillary works to the South-to- North Water Transfer Project in Beijing as an actual case, the shield launching and arriving technology is summarized herein. The construction of the No. 13 bid-section starts from the No. 5 shield launching shaft and arrives at the No. 5 receiving shaft after crossing the No. 40 - No. 42 exhaust shafts, and then the tunneling in the bid-section is completed. Within the route of the tunnel of this bid-section, the No. 40 - No. 42 exhaust shafts are arranged and are constructed in advance, successively, the shield cros- ses with frequent launching and arriving for four times. Finally, not only the smoth corssing of the tunnel construction is realized through application of the shield technology and reasonable construction design, but the shield tunneling record of 1 000 m/month is also realized for consecutive two months.