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隧道围岩开挖后的变形监测对于隧道的信息化施工有着重要的意义。改进的隧道围岩监测系统(TMS),采用各传递杆与岩体点接触,而不是通常采用的全孔灌浆接触方式,解决了全孔灌浆对监测结果的影响,特别是对软岩变形监测的影响。改进的TMS既能够保证各接触点的牢固,防止传递杆与岩体脱离,又可以最大程度地减小试验仪器本身对岩体位移结果的影响。该仪器精度高、操作性强、适应性强,通过在雪峰山隧道工程中的应用,表明效果良好。
Tunnel deformation monitoring after the surrounding rock for the tunnel construction of information technology is of great significance. Improved Tunnel Surrounding Rock Monitoring System (TMS), which uses the contact point between each transfer rod and rock mass instead of the commonly used full-bore grouting contact method, solves the effect of full-bore grouting on the monitoring results, especially for soft rock deformation monitoring Impact. The improved TMS can not only ensure the firmness of the contact points, prevent the transmission rod from being separated from the rock mass, but also minimize the influence of the test instrument itself on the rock mass displacement result. The instrument has the advantages of high precision, strong operability and strong adaptability. The application of the instrument in Xuefeng Mountain Tunnel Project shows good effect.