摘要
在隧道工程中,由于地处山体内部或地下,往往存在极为复杂多变的工程地质情况,使得勘察设计阶段围岩级别难以准确预测或预报,这就给隧道的施工开挖过程带来极大的风险和困难。为此,较为准确地预测掌子面前方围岩情况,对调整支护结构以及确保隧道施工安全顺利进行有着重要的意义。通过以椿树垭隧道为工程实例,结合超前地质预报法对隧道围岩进行了预测。结果表明该方法准确性较高,能够有效指导设计施工的顺利进行。
Because tunnel construction is in the situation of being inside the mountains and under the ground,the geological engineering condition is often complex and changeable.Then it is difficult to predicate or forecast surrounding rock grade in the exploring design stages,which will bring great risk and trouble in tunnel construction.Therefore,correctly forecasting the surrounding rock grade in front of tunnel face is important in adjusting the supporting structure and ensuring the construction safety.In this paper,taking Chunshuya Tunnel as an example,the advanced geological forecast method is applied to predicate the surrounding rock grade of the tunnel.The result shows that the method has its feature with high correctness.
出处
《工程地球物理学报》
2010年第6期764-769,共6页
Chinese Journal of Engineering Geophysics
关键词
公路隧道
超前地质预报
施工预报
highway tunnel
advanced geology forecast
construction forecast
