土压平衡盾构机扩径改造及投入施工情况分析  

Analysis on Diameter Expansion and Construction of Earth Pressure Balanced Shield Machine

作　　者：杨欢欢 林超 YANG Huan-huan;LIN Chao(POWERCHINA SINOHYDRO ENGINEERING BUREAU 14 CO.,LTD.,Kunming 650041,China)

机构地区：[1]中国水利水电第十四工程局有限公司,云南昆明650041

出　　处：《云南水力发电》2022年第9期193-196,共4页Yunnan Water Power

摘　　要：原海瑞克盾构机适用于6000/5400-1500×36°规格管片,而现深圳地铁12号线需使用6200/5500-1500×22.5°,管片分度及直径均不一样。为适应不同管片尺寸、节约成本及满足深圳地铁12号线隧道开挖直径需求,盾构机扩径改造成了首选方案。通过此次盾构机扩径改造并投入施工中表明,满足施工需求,各项技术指标良好。在高强度全断面硬岩中掘进良好适用,但在软土中掘进中,由于渣土改良效果欠佳,导致掘进速度减慢。The original Hairuick shield machine is suitable for 6000/5400-1500×36°size pipe,while 6200/5500-1500×22.5°is required for Shenzhen Metro Line 12.The pipe indexing and diameters are different.To meet the requirements of different segment sizes,cost savings and tunnel excavation diameter of Shenzhen Metro Line 12,diameter expansion of shield is the preferred option.Through the expansion modification of shield tunneling machine and putting it into construction,it shows that all technical indexes meet the construction requirements and are in good condition.It is suitable for excavation in high strength full-section hard rock.However,during excavation in soft soil,the speed of excavation is slowed down due to poor improvement effect of slag soil.

关 键 词：盾构机 扩径 改造 施工 

分 类 号：TU621[建筑科学—建筑技术科学]