运营隧道衬砌脱落后的安全检测与评价

Safety Inspection and Evaluation of Operation Tunnel with Lining Falling

文中以十里碑隧道为例,通过对衬砌脱落区段隧道外观情况、二衬厚度及脱空情况、隧道净空和衬砌强度等进行检测,结合隧道建设维修资料及相关规范文件,评价隧道结构安全情况。结果表明,以千枚岩为主的隧道围岩受强降雨影响严重,隧道技术状况较差,处于危险状态,需及时关闭隧道,进行病害处治。

Taking Shilibei Tunnel as an example,this paper evaluates the safety of the tunnel structure through the inspection of the tunnel appearance,the thickness of the secondary lining and the void,the tunnel clearance and the strength of the lining in the section where the lining falls,and in combination with the tunnel construction and maintenance data and relevant specification documents.The results show that the surrounding rock of the tunnel mainly composed of phyllite is seriously affected by heavy rainfall,and the technical condition of the tunnel is poor,and it is in a dangerous state.It is necessary to close the tunnel in time for disease treatment.