轨道交通盾构施工沿线沉降监测技术优化与工程应用

Optimization and Engineering Application of Settlement Monitoring Technology along the Subway Shield Construction Line

摘要

轨道交通盾构施工由于穿越城市密集建筑群、复杂的地质条件，沿线沉降容易造成管线破裂、建筑物开裂等安全问题，沉降监测是保证施工安全的主要手段。本文对传统监测技术精度不足、数据滞后、覆盖不全等开展监测技术优化研究。优化监测指标体系、改善传感设备布置、创建实时数据处理模型并完善预警体系，塑造起精确有效的沉降监测技术体系。以某地铁盾构区间为工程案例，采用优化技术监测，监测精度提升30%，预警响应时间缩短至5分钟内，避开了3次沉降超标风险。研究成果可以给地铁隧道施工沉降控制提供技术支撑，提高城市地下工程施工的安全性。

Abstract

Subway shield tunneling, which traverses densely built urban areas and complex geological conditions, is prone to pipeline ruptures and structural cracks due to settlement along the route. Settlement monitoring serves as the primary safety measure. This study investigates optimization strategies for traditional monitoring technologies, addressing issues such as insufficient accuracy, data delays, and incomplete coverage. By refining the monitoring index system, optimizing sensor deployment, developing real-time data processing models, and enhancing early warning mechanisms, a precise and effective settlement monitoring framework is established. Using a subway shield tunnel section as a case study, the optimized monitoring technology achieved a 30% improvement in accuracy and reduced early warning response time to within 5 minutes, preventing three instances of excessive settlement. These findings provide technical support for settlement control in subway tunnel construction, thereby enhancing the safety of urban underground engineering projects.

关键词

轨道交通盾构 / 施工沿线 / 沉降监测技术 / 优化工程策略

Key words

rail transit shield / construction line / settlement monitoring technology / optimization engineering strategy

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