既有隧道衬砌结构拆除作业风险分析

Risk Analysis on Demolition Operation of Existing Lining Structure in Tunnel

文章通过对既有隧道衬砌结构拆除作业工程案例进行分析表明,既有隧道衬砌结构拆除作业的风险不同于新建隧道工程风险,在该类风险与安全隐患分析的基础上从设计与施工角度提出了相应的控制措施,并依托山西杜公岭隧道病害处治工程应用实例,应用效果表明,充分的施工准备、合理的拆除方案、科学的拆除方式可以有效地管理与控制既有隧道衬砌结构拆除作业中的潜在风险,保障隧道施工安全。

Through the case analysis on demolition work of the existing tunnel lining structure,it shows that the risk of the demolition work of the existing tunnel lining structure is different from the risk of the new tunnel project.On the basis of the analysis,the corresponding control measures are put forward from the view of the design and construction.These control measures have been applied in the lining defect treatment project of the Dugongling tunnel in Shanxi.The application case shows that through the sufficient construction preparation,the reasonable demolition scheme and the scientific demolition type,the potential risks in the demolition of existing tunnel lining structures are controlled,ensuring the safety of tunnel construction.