地铁区间盾构隧道施工的掘进单元控制法

Driving Unit Control Method for Shield Metro Tunnel Construction

摘要:

为探索复杂多变地层和环境下盾构精细化掘进技术，提出以掘进单元链取代传统按区间控制的理念，定义了掘进单元的内涵、划分原则、划分步骤和应用条件，并进一步形成了一套地铁区间盾构隧道施工的掘进单元控制方法.最后将掘进单元控制法运用于杭州地铁1号线穿越钱塘江工程，针对性控制55个掘进单元，首次成功采用土压平衡盾构穿越钱塘江.

Abstract:

Driving unit chain concept was put forward to explore the shield refinement tunneling technology in complex and changeable strata and environment instead of the traditional control method according to the interval length. Then four key elements of driving unit were defined including the connotation, the principle of division, the steps and the application conditions. Subsequently, a new method of driving unit control in construction of shield metro tunnel was established, which was applied to the Hangzhou Metro Line 1 project across the Qiantang River. By the targeted control of 55 driving units, the earth pressure balance shield was adopted successfully for the project crossing the Qiantang River for the first time.