小曲线半径隧道无铰接盾构施工技术

Non-articulation Shield Construction Technology in Small Radius Curve Tunnel

通过理论分析证明了采用无铰接盾构施工小曲线隧道存在可能性。根据无铰接盾构施工小曲线隧道的特点,结合实际工程,介绍了在曲线段始发、隧道推进过程中的轴线控制、管片偏移等方面采取的针对性控制措施。工程实践表明,采用无铰接盾构施工小曲线半径隧道取得良好效果。

Feasibility of the non-articulation shield in small radius curve tunnel is proved by theoretical analysis.In practice,the characteristics of the non-articulation shield in small radius curve tunnel are verified.This paper introduces control measures on axial line and segments deviation in the process of non-articulation shield launching and driving.Engineering practice shows that good effect is obtained in non-articulation shield in small radius curve tunnel.