运营地铁隧道受邻近深基坑施工影响的应急处理措施

广州地铁某区间明挖隧道，受临近的深基坑开挖施工和地下水位下降影响，局部区段发生了较大沉降，隧道内出现了漏水、裂缝等病害，对隧道结构安全和运营行车安全构成了一定威胁。本文剖析了隧道异常沉降的原因，并针对原因提出了应对措施和整治方案，包括隧道内的病害整治方案和隧道外的补偿注浆方案，形成了一套完整的应急及整治技术，取得了很好的效果，对类似工程具有指导和借鉴意义。

Emergency Measures of Subway Tunnel Affected by the Adjacent Deep Foundation Construction

A lot of tunnels of Guangzhou metros are affected by the deep excavation construction and falling water tables. Their local section has a large settlement, and the tunnel appears water leakage cracks and other diseases, which constitutes a threat to the tunnel structure and operation safety. The paper analyzes the reasons of abnormal settlement of tunnel, and puts forward some corresponding measures and regulation scheme for reasons, including compensation grouting scheme for disease treatment scheme inside and outside tunnel. At last, a complete emergen- cy response and remediation technology is formed, and achieves very good results. It is the guidance and reference for the similar case of subway the tunnel.