Deformations of tunnels and slopes are often induced by tunneling in landslide areas. However, the reinforcement measures for controlling slope deformation may be ineffective for preventing slope sliding, owing to the lack of a clear understanding regarding the slope failure and tunnel deformation modes. This study aimed to monitor the entire construction process of the Xiamaixi tunnel, to analyze the deformation characteristics of the lining and failure mode of the slope, and to evaluate the effectiveness of reinforcement measures. The deformation characteristics of the Xiamaixi tunnel and slope were studied in four stages (normal excavation, suspended excavation, continued excavation, and reinforcement and excavation) with reference to field investigations, geological boreholes, measurements, and numerical simulations. The maximum cumulative monitored deformations of the vault settlement and slope were 39.2 mm and 170.9 mm, respectively. The range of the landslide was 60 m along the tunnel axial direction, and 46 m along the tunnel transverse direction. It was found that a tunnel whose vault is located in a potential landslide area may be forced to extrude, but not slip, and that the extrusion deformation of the lining is only caused by the increasing external forces. Reinforcement measures (and other temporary supporting measures) were presented for the slope and auxiliary construction, and their effectiveness was assessed. Finally, the lessons learned were summarized, providing insights for preventing future similar incidents from reoccurring.

隧道和斜坡的变形通常是由滑坡地区的隧道施工引起的。然而，由于缺乏对斜坡破坏和隧道变形模式的清晰了解，用于控制斜坡变形的加固措施对于防止斜坡滑动可能无效。该研究旨在监测下买西隧道的整个施工过程，分析衬砌的变形特征和边坡的破坏模式，并评估加固措施的有效性。下麦溪隧道和边坡的变形特性在四个阶段（正常开挖，悬吊开挖，继续开挖以及加固和开挖）中进行了研究，并参考了野外调查，地质钻孔，测量和数值模拟。拱顶沉降和坡度的最大累积监测变形分别为39.2 mm和170.9 mm。滑坡的范围沿隧道轴向为60 m，沿隧道横向为46 m。已经发现，拱顶位于潜在滑坡区域的隧道可能会被挤压，但不会滑动，而且衬砌的挤压变形仅是由增加的外力引起的。提出了边坡和辅助建筑的加固措施（和其他临时支撑措施），并评估了其有效性。最后，总结了汲取的教训，为防止将来再次发生类似事件提供了见识。滑坡的范围沿隧道轴向为60 m，沿隧道横向为46 m。已经发现，拱顶位于潜在滑坡区域的隧道可能会被挤压，但不会滑动，而且衬砌的挤压变形仅是由增加的外力引起的。提出了边坡和辅助建筑的加固措施（和其他临时支撑措施），并评估了其有效性。最后，总结了总结的经验教训，为防止以后再次发生类似事件提供了见识。滑坡的范围沿隧道轴向为60 m，沿隧道横向为46 m。已经发现，拱顶位于潜在滑坡区域的隧道可能会被挤压，但不会滑动，而且衬砌的挤压变形仅是由增加的外力引起的。提出了边坡和辅助建筑的加固措施（和其他临时支撑措施），并评估了其有效性。最后，总结了汲取的教训，为防止将来再次发生类似事件提供了见识。衬里的挤压变形仅是由外力的增加引起的。提出了边坡和辅助建筑的加固措施（和其他临时支撑措施），并评估了其有效性。最后，总结了总结的经验教训，为防止以后再次发生类似事件提供了见识。衬里的挤压变形仅是由外力的增加引起的。提出了边坡和辅助建筑的加固措施（和其他临时支撑措施），并评估了其有效性。最后，总结了总结的经验教训，为防止以后再次发生类似事件提供了见识。