京原线驿马岭隧道全长7031米,除两端过渡段碎石道床外,全隧铺设了中心水沟式整体道床,于1973年元旦正式开通使用。同年9月17日发现整体道床病害(如图1所示),根据病害发展和地质情况分析,如不及时整治,病害地段将会向两端延伸,下沉、断裂也会日趋严重,在局部地段 A total length of 7031 meters of the Beijing-Miaoyi Station Maling tunnel, with the exception of the two ends of the transitional section of the gravel road bed, the entire tunnel laying a central channel gutter, was officially opened in New Year’s Day 1973. September 17 the same year found that the overall bed disease (shown in Figure 1), according to disease development and geological analysis, if not timely remediation, the disease will extend to both ends of the lot, sinking, fracture will be increasingly serious in the local Lot