盾构隧道下穿铁路工程风险及对策

Research of Risks and Countermeasures for Shield-driven Tunnel beneath Existing Railway

结合杭州地铁一号线下穿铁路艮山门辅助编组站盾构隧道工程,对其可能出现的风险进行了研究分析,提出了相应对策,并对盾构下穿施工参数提出了建议;针对可能出现的轨道过大变形,提出了对盾构穿越区采用分块加固的措施,并对加固后的效果进行了分析。

Based on the shield-driven Hangzhou Metro line 1 beneath the Genshanmen marshalling station,the risks which may encounter is analyzed,and the corresponding countermeasures and parameters are proposed.To avoid serious track displacement,the option of reinforcement in separate blocks is presented regarding the shield driven area.Finally the effect of reinforcement is analyzed.