石羊岭隧道设计施工技术研究

发布时间：2018-08-28 13:59

【摘要】：我国是一个多山的国家，75%左右的国土是山岭或重丘。隧道具有克服地形或高程障碍，改善线形等优点，已经成为高等级公路越岭的最优选择方案。目前的公路隧道设计主要依据工程类比法，理论计算和数值分析法一般只能作为参考，而仅依据工程类比法有一定的盲目性,不能适应地质条件的多变性,这就使得原设计与施工中的实际情况不符，根据原设计进行开挖和支护往往不够安全和经济。动态化设计就是在此背景下发展起来的一种隧道工程设计方法。目前,从总体上来说,动态化设计仍然处于发展和逐渐成熟阶段,理论和实用技术的研究需要进一步深入。本文以甘肃省S311线石羊岭隧道为工程背景，综合运用工程类比、数值模拟、现场监控量测、超前地质预报等方法，对隧道总体设计、土质隧道深浅埋分界、初期支护、施工方法和施工中的动态化设计等方面进行了研究，得出的结论主要有：从工程角度提出了黄土隧道深浅埋划分界限；论证了黄土隧道初期支护的安全经济模式“模筑混凝土+钢拱架+锁脚锚管组合结构”；通过实践验证了黄土隧道采用新奥法设计、矿山法施工的成功经验；强调了动态化设计在施工中的作用，在施工中需要根据地质条件的变化进行地质超前预报和监控量测，，据此合理调整衬砌支护参数和施工方法。论文的研究工作对黄土隧道设计施工具有指导和借鉴意义。
[Abstract]:China is a mountainous country about 75% of the territory is mountains or heavy hills. Tunnel has the advantages of overcoming terrain or elevation obstacles and improving alignment. It has become the best choice for high-grade highway. At present, the design of highway tunnel is mainly based on the engineering analogy method. The theoretical calculation and numerical analysis method can only be used as reference, but only according to the engineering analogy method has some blindness and can not adapt to the variability of geological conditions. This makes the original design and construction of the actual situation is not consistent, according to the original design of excavation and support is often not safe and economic. Dynamic design is a tunnel engineering design method developed under this background. At present, as a whole, dynamic design is still in the stage of development and maturity, and the research of theory and practical technology needs to be further studied. Taking Shiyangling tunnel of S311 line in Gansu province as the engineering background, this paper synthetically uses the methods of engineering analogy, numerical simulation, field monitoring and measurement, advance geological prediction, etc., to the overall design of the tunnel, the deep and shallow buried boundary of the soil tunnel, the initial support, etc. The construction method and dynamic design in construction are studied. The main conclusions are as follows: from the engineering point of view, the dividing limits of deep and shallow buried loess tunnel are put forward; This paper demonstrates the safety and economic mode of the initial support of loess tunnel, which is the combination structure of anchor and anchor pipe with steel arch frame and steel arch frame, and verifies the successful experience in the design of loess tunnel by new Austrian method and the successful construction of mine method through practice. The function of dynamic design in construction is emphasized. In construction, geological advance prediction and monitoring measurement should be carried out according to the change of geological conditions, and the parameters and construction methods of lining support should be adjusted accordingly. The research work of this paper is of guiding and referential significance to the design and construction of loess tunnel.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U452;U455.4

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