特殊地质情况下土压平衡盾构掘进施工技术

Earth Pressure Balance Tunneling Machine Driving Technology in Special Geological Environment

结合广州地铁3号线、5号线的工程实践,对土压平衡盾构穿过喷涌地段、长距离硬岩地段、上软下硬地段、瓦斯地段、空洞地段以及盾构小曲线半径始发等掘进的关键技术进行了论述和总结,具有一定的推广应用价值。

The paper sets forth the key techniques of EPB （ Earth Pressure Balance） machine in the light of the construction practice of Guangzhou Metro Line 3 and Line 5. It concludes comprehensively technological difficulties of EPB machine driving through spewing section, long-distance hard rock section, up-soft and down-hard section, gas section, cavities, and tunneling beginning with short-radius curves. It is of a good value for application and extension.