摘要
盾构下穿既有地铁线路采取土压平衡盾构法,在粉质粘土层中通过优化盾构掘进参数即土压、推力、刀盘扭矩、刀盘转速、掘进速度、同步注浆量、同步注浆压力、出土量和盾构姿态等,减少对既有运营线的影响,在西安地铁盾构施工领域有着良好的指导意义。
The shield tunneling under the existing subway line adopts the earth pressure balance shield method.In the silty clay layer,the tunneling parameters of the shield tunnel are optimized,namely,soil pressure,thrust,cutter head torque,cutter head speed,tunneling speed,synchronous grouting the volume,simultaneous grouting pressure,unearthed volume and shield attitude,etc.reduce the impact on the existing operating lines,which has a good guiding significance in the field of shield construction of the Xi'an Metro.
作者
闫逵
YAN Kui(China Railway Beijing Engineering Bureau Group Chengshi Rail Transit Engineering Co.,Ltd.,Hefei Anhui 230061)
出处
《智能建筑与工程机械》
2022年第2期28-31,122,共5页
Intelligent Building and Construction Machinery
关键词
隧道工程
盾构
下穿既有地铁线
沉降
under-crossing existing operating subway lines
shield tunnels
settlement
