浙江苍岭隧道岩爆工程地质特征分析与防治措施研究

根据在浙江苍岭隧道施工中发生的岩爆，通过现场地质观测资料，分析了其形成的规模、位置、诱发因素以及地质条件，从地质工程的角度，对岩爆发生地段隧道的岩石组成、地质构造、地应力特征以及地下水情况进行了探讨，发现在苍岭隧道施工中发生岩爆的岩石具有岩体结构面发育适中、弹性模量大、P波波速高、地质构造简单、现代水平构造应力强且主压应力轴σ1大角度相交于隧道中轴线和地下水不发育的特征，并在此基础上，提出了掌子面喷水、布设释放地应力锚杆、减少隧道壁聚能结构等有效的岩爆防治措施。

The Geological Feature Analysis and the Prevention Measure Study of Rock Burst Project in Zhejiang Cangling Tunnel.

According to the rock burst which occurs in the Zhejiang Cangling Tunnel construction, through the scene geology observed data, this article has analyzed the scale, the position, the suggestion factor as well as the geological condition specifically it forms. Based on the geological project, it has discussed the tunnel＇ s rock composition, the geologic structure, the crustal stress characteristic as well as the ground water situation to the rock burst section, and discovered that the rock burst rock in cangling tunnel construction has the features of the rock mass structural plane growth moderately, the big elasticity coefficient, the high P wave velocity, the simple geologic structure, the strong stress in modem horizontal tectonic, and the compression stress axis σ1 wide angle intersection in the tunnel axle. And based on this, it has proposed some suggestions of spraying water on face, setting up anchor rods to release crustal stress, reducing tunnel wall binding energy structure and so on.