文档介绍：华中科技大学
硕士学位论文
平行双线地铁浅埋暗挖施工地表沉降研究
姓名:张昕
申请学位级别:硕士
专业:建筑与土木工程
指导教师:吴贤国
2011-05-24
华中科技大学硕士学位论文
摘要
隧道施工引起的地表沉降是影响地铁安全的一个重要因素,地表沉降过大不但
可能引起隧道本身坍塌失稳,而且对隧道周边的建筑物及管线产生巨大的破坏和影
响。隧道开挖引起的地表沉降分为横向、纵向沉降,研究地表沉降的规律对控制地
铁施工有重要的指导作用。
本文在查阅大量文献的基础上对城市平行双线隧道浅埋暗挖施工下的地表沉
降进行了深入的分析,包括地铁施工的常用方法,浅埋暗挖施工时地表沉降的机理,
地表沉降的横向、纵向沉降规律及各种影响因素对地表沉降的影响程度,分析了隧
道几何形状、隧道上覆土质、隧道埋深、开挖方法、施工管理水平等因素对地表沉
降的影响。分别采用经验法中的 peck 公式法和偏移参数法对武汉市地铁 2 号线某
些浅埋暗挖区间的工程实测数据进行拟合,验证了对于平行双线地铁浅埋暗挖区间
而言偏移参数法较之 peck 公式法拟合效果更好,文中选用拟合精度更高的偏移参
数法对武汉市特定地质条件下的地表沉降进行比较深入的分析,由高斯曲线分布公
式反推出样本区间若干断面的地表最大沉降值、沉降槽宽度、地层损失率的预测值,
用概率统计的方法确定这些参数的变化范围并寻找规律,给出武汉市特定地质条件
下的经验法参数建议值,为工程实际施工提供参考。

关键词:浅埋暗挖平行双线隧道地表沉降沉降规律偏移参数法

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华中科技大学硕士学位论文
Abstract
The ground settlement due to metro construction is one of the most important safety
factors. Excessive excavation may make the metro collapsed. It is very important to
reduce the influences of construction on surrounding environment,including buildings
and pipelines. Metro excavation can cause both horizontal and vertical ground
deformation. Therefore, empirical method is used in this thesis to predict the influences
of construction on the ground settlement herein.
Detailed analysis for urban parallel two-lane tunnel constructed by shallow mining
method is given in this thesis. Brief introduction about shallow mining method, the
mechanism of ground deformation due to shallow mining method, rules of metro
excavation both horizontally and vertically are made in this thesis and it also figures out
the influence quantity of various factors which affect the ground settlement. In reality,
ground deformation depends on a number of factors, including hydro-geological and
geotechnical conditions, tunnel geometry and depth, excavation methods and the quality
of workmanship and management. Both peck formula method and the migration
parametric method are used in this thesis. The fitting results of ground settlement resulted