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目前,公路隧道岩体围岩在勘测设计和实际施工两个阶段经常出现分级严重不同,造成它的原因可能是复杂的地质条件、勘测技术差异以及不当的勘测手段等等,为了确保施工运行中隧道围岩分级合理及其系统的稳定性,必须找到恰当的评价方法来解决此类问题。实践证明,通过采用动态分析法对施工现场进行勘查,发现勘查结果与实际施工结果存在很大的差异,公路隧道施工时的岩体围岩分级情况更能真实反映岩体围岩的稳定情况。
At present, the surrounding rock mass of highway tunnel often appears gravely different in the two phases of survey design and actual construction, which may be caused by complex geological conditions, differences in survey techniques and improper survey methods. In order to ensure the construction operation Surrounding rock tunnel grading reasonable and the stability of the system, we must find the appropriate evaluation method to solve such problems. Practice has proved that through the dynamic analysis of the construction site exploration, found that the exploration results and the actual construction of the results there is a big difference between the construction of road tunnel rock mass grading more accurately reflect the stability of rock mass surrounding rock.