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洋碰隧道右线北京端为软岩浅埋 ,洞身围岩具有上半断面软下半断面硬、右半断面软左半断面硬、全断面软或硬等特征。针对变化多端的地质特点 ,采取比较合理的衬砌类型和 CRD工法施工。为了确保安全和工程质量 ,在施工过程中采取了有力的辅助施工措施和监控量测 ,顺利通过了软岩浅埋段。
On the right side of the Yangmian tunnel, the Beijing-side is shallow soft rock. The surrounding rock of the tunnel has the features of soft lower half of the upper half, lower hard half of the right half, and soft or hard of the full cross section. In view of the changing geological features, we should adopt a more reasonable lining type and CRD construction method. In order to ensure safety and project quality, strong auxiliary construction measures and monitoring measurements were taken during construction, which successfully passed the soft rock shallow section.