盾构施工中,在隧道的有限空间内对螺旋输送机进行拆装检修是一项高难度的作业,也是一项高风险的作业,需要综合考虑设备和地层因素,采取特殊的措施来确保施工安全。以北京地铁6号线在含水砂卵石地层条件下进行的盾构隧道内螺旋机叶片检修施工为例,论述了在隧道内进行盾构螺旋输送机拆装、叶片更换等施工作业的关键技术和操作要点。 Shield construction, the tunnel in the limited space of the screw conveyor disassembly overhaul is a difficult operation, but also a high-risk operations, the equipment and strata need to take into account factors, to take special measures to ensure the construction Safety. Taking the construction of the spiral tunnel in shield tunnel under the condition of water-containing sand-gravel stratum in Beijing Metro Line 6 as an example, the key technologies of construction operation such as disassembly and replacement of shield screw conveyor and replacement of blades in the tunnel are discussed. Operation points.