摘要
Abstract
In order to solve the problems of double-shield TMB in urban rail transit such as frequent station passing, construction on small radius curve, risk in under-passing structures, and with reference to the design and construction of Qingdao Metro Line 2 , this paper studies the adaptability of double-shield TMB, the support form and the interface between different design supports, station passing solutions, grouting behind segment wall, under-passing structures and poor geological sections and other aspects. Compound lining ( anchoring and shotcreting+mold lining) is proposed to address the interface between different supports. According the construction method of station, the technical solution to allow entire TBM to pass station is proposed to avoid repeated disassembly, assembly, commissioning and the effect on the station. Key technologies are developed to facilitate construction on small radius curve, grouting behind segment wall, under-passing structures and poor geological sections. Double-shield TBM is successfully applied to Qingdao subway and high efficient safe, environmental friendly and economical construction is achieved.关键词
双护盾TBM/管片衬砌/接口防水/TBM过站/回填灌浆Key words
Double-shield TBM/Segmental lining/Waterproof of interface/TBM passing station/Backfill grouting分类
交通工程
