隧道开挖引起深部土层位移的计算方法研究

发布时间：2018-02-13 08:52

  本文关键词： 岩土工程 围岩土质 Peck公式 主要影响角 沉降槽宽度系数 间隙参数　出处：《重庆交通大学学报(自然科学版)》2017年05期 　论文类型：期刊论文

【摘要】：基于平面应变原理,考虑岩土体的不可压缩性,采用国内外适用性较强的Peck公式验证所提出的考虑隧洞直径与上覆土层厚度、土体削减、盾尾间隙、围岩土质概况等因子对影响角参数、任意深度沉降槽宽度对数值的影响及取值区间。拟采用具体参数用于随机介质理论中,探讨了参数变化对Park位移模式3引起的隧道轴线上任一深度土层的三维空间位移的影响。通过相关具体算例结果表明:采用考虑围岩土体性质参数比较合理,且在工程上应用偏于安全。
[Abstract]:Based on the plane strain principle and considering the incompressibility of rock and soil mass, the Peck formula with strong applicability at home and abroad is used to verify the proposed method, which considers the tunnel diameter and overlying soil thickness, soil reduction, shield tail clearance, etc. The influence of factors such as the general state of surrounding rock on the parameters of angle and the width of settlement trough at any depth and the range of values are discussed. The concrete parameters are used in the theory of random medium. This paper discusses the influence of parameter change on the three-dimensional spatial displacement of the tunnel axial line in a deep soil layer caused by Park displacement mode 3. The results of relevant examples show that it is reasonable to consider the property parameters of surrounding rock and soil mass. And in the application of safety in engineering.
【作者单位】： 西安石油大学机械工程学院;
【基金】：国家自然科学基金项目(51405385) 陕西省教育厅专项科研计划项目(15JK1562) 西安石油大学博士科研基金项目(250205002)
【分类号】：U455.5
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本文编号：1507777