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巴准铁路敖包沟隧道出口段在黄土地层中浅埋连续下穿敖家沟西梁煤矿三栋建筑物,洞项覆土厚度约10~20m,隧道洞身为砂质黄土与软弱砂岩夹泥岩构成的复合地层。为了保障建筑物安全,掌握敖包沟隧道浅埋下穿段施工引起的建筑物基础变形,评价其影响,根据建筑地基基础设计规范,结合隧道与建筑物之间的位置关系,给出其允许变形限值;根据监测结果,分析了隧道施工过程中建筑物基础沉降随时间变化以及沿横向、纵向沉降的规律,证明其变形控制在限制范围内,保证了隧道施工过程中建筑物的安全。
Bazuo Railway obovugo tunnel exit section in the loess layer of shallow buried continuous wear Aojiagou Xiliang coal mine three buildings, cave cover soil thickness of about 10 ~ 20m, the tunnel hole as sandy loess and weak sandstone with mudstone composition Compound stratum. In order to ensure the safety of the building and grasp the deformation of the foundation of the building caused by the construction of the Obo-Gou Tunnel, it is necessary to evaluate its influence. According to the design rules of the foundation of the building and the positional relationship between the tunnel and the building, According to the monitoring results, the settlement of the building foundation during the tunnel construction process is analyzed with time and along the horizontal and vertical settlement rules to prove that the deformation control within the limits, to ensure the safety of the building during the tunnel construction process.