公路隧道二衬厚度不足的成因及防控措施

Causes and prevention control measures of insufficient lining thickness of highway tunnel

公路隧道二衬厚度在实际施工中往往存在局部无法达到设计要求的问题,本文主要阐述隧道二衬局部不足的各种常见原因,并从实践经验分析保证二衬厚度的防控措施。结果表明需通过开挖、支护、二衬台车来控制二衬厚度。

It is often a problem in the actual construction that part of thickness of highway tunnel secondary lining does not meet the design requirement.This paper describes various common causes of local insufficient thickness of secondary lining,analyzes the prevention and control measures from practical experience.The results of the analysis indicate that the thickness of the second lining needs to be controlled by excavation,support,and second lining trolley.