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以成都市第二污水处理厂厂外污水干管下穿成龙路顶管施工为例,基于场地工程地质、水文地质条件,系统分析了顶管施工诱发地面塌陷原因,提出了以锚杆支撑为主的加固方案。经现场顶管施工验证表明:锚杆支撑加固技术可快速减小已塌陷区地下管线的变形,适用于塌陷段管线抢险施工。
Taking the pipe jacking construction of Jackie Road outside WWTP of Chengdu No.2 WWTP as an example, the causes of ground subsidence induced by pipe jacking are systematically analyzed based on the geological and hydrogeological conditions of the site. The main reinforcement program. The site pipe jacking construction verification shows that: Bolt support reinforcement technology can quickly reduce the deformation of underground pipeline in subsidence area, and is suitable for emergency construction of subsidence pipeline.