水獭坪隧道监控量测围岩位移与压力分析

Displacement and Pressure Analysis of Surrounding Rocks by Shuitaping Tunnel Monitoring and Measuring

以在建雅康高速公路水獭坪隧道断面k75+195监测结果为例,在系统分析监测断面变形-时间、接触压力-时间关系的基础上,对断面稳定性、位移纵向分布规律、位移与埋深的关系进行了分析和预测。结果显示:变形和压力与时间存在一定的规律,位移发展滞后于围岩压力,断面埋深较大时位移值也较大。因此在隧道设计时应考虑隧道埋深的因素,通过回归分析预测最终位移值和最终压力值,判断断面稳定性及适时建议施作二衬。

Based on the monitoring results of K75 ＋ 195 at the section of Yakang Expressway, the stability of the section, the longitudinal distribution of displacement, the displacement and the depth of burial are analyzed based on the analysis of the deformation-time and contact pressure-time relationship. The relationship between the analysis and prediction. The results show that the deformation and pressure have certain regularity with time, and the displacement development lag behind the surrounding rock pressure. When the depth of the section is large, the displacement value is larger. Therefore, the tunnel design should take into account the factors of tunnel depth, through the regression analysis of the final displacement value and the final pressure value to determine the stability of cross-section and timely implementation of the proposed two lining.