洞柱法在地铁车站施工中的应用

Application of PBA Method in Subway Station Construction

以某洞柱法施工地铁车站为工程背景,针对车站穿越富水粉细砂层热力沟、上水管、污水管、燃气管等复杂管线及不良地质,穿越匝道桥及地下通道等敏感建(构)筑物,周边紧邻商业街及生活区的特点及难点,介绍了在复杂敏感环境下洞柱法施工地铁车站工艺技术,并对关键工序技术方案优化进行了详细阐述,针对施工中存在的问题提出了相应的解决措施及下一步优化建议。

Taking a subway station constructed by PBA method as the engineering background,and aiming at the construction characteristics and difficulties,of which the subway station passes through the heating pipeline,water supply pipeline,sewage pipeline,gas supply pipeline,etc.and the complex geology with water-rich silty sand layer,passes through sensitive structures such as ramp bridge and underpass,surrounding commercial and living areas,this paper introduces the construction technology of subway station by PBA method in complex and sensitive environment,optimizes the technical scheme of key processes,summarizes the problems existed in construction,puts forward to corresponding countermeasures and proposes the future optimization suggestions.