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采用地质雷达对白岭窟隧道条石衬砌壁后空洞病害进行了检测,基本探明了该隧道壁后空洞的分布形态和分布规律。根据病害检测结果,开展了不同空洞组合、不同围岩特性、特定位置不同外水压力、不同衬砌厚度等条件下衬砌的内力有限元分析,并对衬砌结构进行了整体抗拉(压)强度检算、偏心距检算以及条石衬砌灰缝局部抗拉和抗剪验算,继而对隧道的整体安全性进行了评估。
Geological radar was used to detect the post-tunneling defects in the tunnel of Bailingcha tunnel, and the distribution pattern and distribution of the back and forth tunnel walls were basically ascertained. According to the result of the disease test, the finite element analysis of the internal force of the lining under different cavity combinations, different surrounding rock characteristics, different external water pressure in different positions and different lining thicknesses was carried out, and the integral tensile strength test Calculation of the eccentricity, as well as the local tensile and shear tests of gray lining in stave linings, and then the overall safety of tunnels was evaluated.