盾构隧道贯通风险防范措施研究

The Measures for Preventing the Shield Tunnel Crossing Risk

摘要: 在盾构法隧道工程中，如在贯通阶段操作控制或方案措施不当，易造成掘进面地层塌陷、涌水涌砂等险情的发生，导致人员及财产损失。以金陵石化物料管道长江穿越隧道工程为例，针对盾构机贯通阶段所存在的各种安全隐患，项目部通过采取打探孔检测、洞门密封装置安装、贯通段注浆、管片类型的变化等措施，有效降低了贯通过程中的各类风险，圆满地完成了贯通任务。

Abstract: In the shield tunnel crossing projects, if improper measures and plans were taken in the tunnel penetration phase; it was easy to induce collapse in driving surface strata, water and sand gushing and the occurrence of dangerous situations, caused personnel and property losses. By taking Nanjing Jinling pec Shield Project for example, aiming at various hidden dangers existing in the shield machine in the penetration phase, the measures of hole detection, installation of sealing devices in cave doors, penetration section grouting, change of segment types are taken by the Project Department, it effectively reduces all kinds of risks in the penetration process, the work tasks are successfully completed in tunnel penetration.