复合式土压平衡盾构机穿越闽江强透水砂层技术研究  

On the Technology of Composite Earth Pressure Balance Shield Tunneling under Strong Permeable Sand Layers of the Min River

作　　者：朱沪生[1,2] 郑世兴 易宏 ZHU Husheng ZHENG Shixing YI Hong

机构地区：[1]上海申通地铁集团有限公司,上海200223 [2]福州市人民政府 [3]上海市基础工程集团有限公司,上海200438

出　　处：《城市轨道交通研究》2017年第1期31-36,共6页Urban Mass Transit

摘　　要：地铁盾构机下穿江河段一般为风险最高段,且不同地层组合条件下的施工风险等级也不同。结合福州地铁1号线达道站—上藤站区间盾构穿越闽江的实例,系统地研究了复合式土压平衡盾构机穿越江底强透水砂层的施工工艺,包括施工方案的整体评估、施工前的设备改造和渣土改良、施工难点及其对策、辅助工法等。该施工工艺实现了复合式土压平衡盾构机穿越江底强透水砂层的突破,既保障了施工安全,又保证了施工工期。In general, the section where metro shield crosses underground a river is the highest risk section, but the risk de- gree differs in different stratum combination conditions. Com- bined with the practical engineering of Dadao- Shangteng sta- tion section where the tunnel of Fuzhou metro Line 1 crosses under the Min River, the construction technology of composite earth pressure balance shield machine tunneling under strong permeable sand layers is systematically studied, including the o- verall evaluation of the construction schem, the renovation of equipment before the construction, the difficult points in con- struction and countermeasures and so on. The construction technology has achieved a breakthrough of composite earth pressure balance shield machine tunneling under strong permea- ble sand layers, ensured the safety and the construction period at the same time.

关 键 词：地铁 越江隧道 复合式土压平衡盾构机 施工技术 

分 类 号：U455.43[建筑科学—桥梁与隧道工程]