吉青岭隧道浅埋偏压进口段施工风险分析及综合防治措施

Risk Analysis on Entrance with Shallow-buried and Unbalanced Pressure of Jiqingling Tunnel and the Measures

摘要:

结合吉青岭隧道的工程实际，分析了浅埋偏压不良地质条件下隧道进口段的施工风险，提出了采取初期支护加强，短循环开挖，初期支护封闭等综合地质病害预防措施。

Abstract:

Based on the engineering case in Jiqingling tunnel, risk analysis was made on the construction of tunnel entrance in poor geological condition with shallow-buried and unbalanced pressure. Integrated prevention measures for geological diseases were put forward with early support strengthening, short cycling excavating and early support closing.