公路隧道围岩压力分类及其影响因素

Classification of surrounding rock pressure in highway tunnel and its influencing factors

公路隧道围岩压力是决定隧道设计、施工的核心因素,支护套系及支护强度参数、开挖方案及工序等均受制于围岩压力。针对公路隧道当中常见的围岩压力类型进行了归纳,并从客观与主观两个方面对围岩压力的影响因素进行了分析,所得结论对公路隧道的安全施工及风险管控具有一定的借鉴意义。

Surrounding rock pressure in highway tunnel is a core factor for tunnel design and construction.Support type and strength parameter,excavation method and working procedure are all affected by surrounding rock pressure.In this paper,the common types of surrounding rock pressure in highway tunnel are summarized,and the influencing factors of surrounding rock pressure are analyzed from both objective and subjective aspects.The conclusions can be used for reference in the safe construction and risk control of highway tunnel.