大直径泥水盾构复合地层进仓技术比较与应用

Comparison and Application of Chamber-entering Technology of Large-diameter Slurry Shield in Complex Strata

通过对目前广深港铁路狮子洋隧道正在施工的2台大直径气垫式泥水加压盾构在高压、富水及复合地层中掘进施工的研究,总结出盾构在不同性状条件的复合地层中可采用带压进仓、敞开式开仓、地层加固开仓、低压限排进仓等进仓技术,详细介绍各种进仓技术方法的选择和适应范围及复合地层中各种进仓技术施工要点,可为类似工程的施工提供一定的借鉴。

Based on the study on the boring of Shiziyang tunnel on Guangzhou-Shenzhen-Hongkong Railway in high-pressure, water-rich and complex strata by large-diameter slurry shields, the authors summarize the chamber-entering technologies in different strata, including hyperbaric operation, normobaric operation, normbaric operation under consolidated strata and operation under low pressure. They present the selection methods, application scopes and key points of these chamber-entering technologies in complex strata in detail. This paper can provide references for similar projects.