浅析某公路工程隧道设计

结合贵州省汕头-昆明高速公路的隧道设计,从隧道设计的技术标准、隧道土建工程设计、隧道衬砌设计、隧道施工监控量测、隧道环境保护等方面介绍了当前隧道设计的一些方法和思路,旨在最终确保隧道施工的顺利进行.     

苏州轨道交通苏-塔区间隧道设计方案

根据国内上海、南京、广州等地的地铁盾构隧道的设计和施工经验,以苏州轨道交通1号线施工实际为背景,结合苏州乐园站-塔园路站区间,简要介绍了苏州盾构隧道的设计理念.对苏州盾构隧道设计、盾构机选型、附属结构设计、建构筑物保护、防水设计等作了较详细的介绍.可为类似的工程设计和施工提供参考和借鉴.     

地铁二号线赤鹭盾构区间设计

结合广州地铁二号线赤岗-鹭江盾构区间隧道工程；从盾构管片的设计、隧道防水设计及建筑物保护设计介绍了其隧道的设计新技术，工程结果显示该设计取得了良好的社会经济效益。     

公路隧道防排水施工监理要点

依据JTG D70-2004公路隧道设计规范,对公路隧道防排水设计原则作了介绍,总结了隧道防排水施工在准备阶段与施工阶段的监理要点,并对盲管设置滤层和二衬后注浆堵水的问题作了讨论,供设计人员参考。     

双层道路隧道通风设计的特点和典型实例

双层道路隧道与一般单管单层的道路隧道相比,通风系统存在一定的特殊性。介绍了双层隧道通风设计的基本情况,并具体介绍了上海复兴东路隧道、上中路隧道、外滩隧道及军工路隧道等4条双层隧道通风设计的典型实例。最后归纳了双层道路隧道通风系统的设计特点。     

公路隧道火灾排烟设计探讨

为解决特长隧道常规火灾排烟方法的局限性,介绍了国内外常用隧道火灾通风和排烟设计方式,提出了特长隧道通风设计和防灾设计区别对待的设计理念,优化设计了火灾发生后的排烟方案,对今后的隧道火灾排烟设计工作有一定参考意义。     

花城大道隧道土建工程设计

指出花城大道隧道是新光快速路系统工程的重要组成部分,主要介绍了花城大道隧道土建工程设计的控制因素和设计构思,并对城市隧道建设的地下管线保护进行了探讨,同时对隧道的抗浮设计进行了研究,可供隧道设计人员参考。     

广佛环线东环城际盾构隧道设计关键技术研究

详细介绍了广佛环线东环隧道大源站-太和站区间盾构隧道的建设环境、技术标准，以及隧道平面、纵断面等总体设计方案，并对大埋深高水压盾构隧道衬砌类型及防水、大埋深复杂围岩条件衬砌结构形变控制、盾构选型、端头加固设计等关键技术进行了阐述。     

谈隧道洞口设计要点

结合自身近几年从事隧道设计的经验,简要介绍了隧道洞口方案设计的考虑因素和隧道洞口设计应遵循的几点原则,重点论述了隧道洞口开展综合设计、艺术设计的必要性,以期指导实践。     

浅议岩溶地区隧道设计

介绍了岩溶的成因及其对隧道结构的影响,对岩溶区隧道设计进行了重点研究,论述了超前地质预报的方法和隧道有效注浆设计,深入探讨了隧道衬砌结构的设计要点,包括围岩分级、支护体系设计以及抗水压衬砌设计,以期为岩溶地区隧道施工奠定基础。     

Design of grouting with silica sol in hard rock – New design criteria tested in the field, Part II

An extensive field test was conducted in spring 2005 in the Törnskog Tunnel and consisted of design, execution and evaluation of a grouting campaign for 100 m of tunnel. The field test was part of the normal construction of the tunnel. This paper describes how the design of the grouting was coupled with the actual grouting procedure. A preliminary investigation of the tunnel showed that the location where this field test was conducted had a large fracture zone. A drill-core was taken in this zone and hydraulic tests were performed. From the evaluation of the rock core a fracture aperture distribution was assessed and the grouting design was focused on this part of the tunnel. The evaluation showed that apertures down to 14 μm needed to be sealed to cope with stipulations set for leakage into the tunnel (2 l/min and 100 m of tunnel). A design was made based on silica sol, where a critical penetration length was decided and the layout of the grouting fan could be determined. A new design was chosen, with a specific pumping time of 30 min at a grouting pressure of 1.1 MPa. The design worked well and the water ingress was reduced. A drip characterisation in both tunnel tubes was made. One tube was grouted with silica sol and the other with cement following a more traditional approach. The drips were both larger and more frequent in the cement-grouted tube than in the silica sol-grouted tunnel. Eight out of nine fans grouted with silica sol showed a significant sealing effect. For one fan the design was not followed. Instead, the workers used the more traditional method, i.e. only pumping until the design pressure was reached, which produced a poor result. This paper demonstrates the efficiency of design methodology that takes into account the hydraulic apertures and that the required minimum penetration length can be coupled to the apertures when formulating the grouting criteria.     

TSP技术在黄龙寺隧道施工中的应用

结合石武客运专线黄龙寺隧道工程实践，介绍了采用隧道地质超前预报系统TSP203PLUS对黄龙寺隧道进行地质情况预测，对预测成果进行分析，为工程设计提供依据，指导工程安全施工。     

城市道路平面交叉口与隧道出口最小安全间距探讨

平面交叉口和隧道作为城市道路的重要组成部分,其合理的安全间距值直接影响城市道路构造物的设置位置和交通运行质量。该文通过界定城市道路平面交叉口与隧道出口最小安全间距的定义,分析城市道路平交口与隧道出口安全间距的各种影响因素,提出了不同设计速度道路平交口与隧道出口的最小安全间距值,可为同类工程设计提供参考。     

Recent large-diameter tunnel construction in Singapore using sprayed concrete linnings

Sprayed Concrete Lining (SCL) or the New Austrian Tunnelling Method (NATM) has had limited exposure in Singapore. Previously this has been restricted to excavations of less than 6 metres inside diameter in the boulder clay and decomposed granite. For the North East Line Project (NELP) a section of SCL tunnel was constructed as part of the tunnelling works on Contract 710. This paper describes the design, planning, and construction issues of twin 8.4-metre inside diameter crossover tunnels spaced less than one diameter apart constructed in the Jurong Formation. In addition, the construction of a SCL tunnel in the Old Alluvium, is also described. This tunnel is an advance tunnel for the future Deep Tunnel Sewage Scheme (DTSS) and is being constructed as part of the NELP Contract 705 Works. Details of the Jurong Formation and Old Alluvium are given together with their geotechnical characteristics, which played a major role in the selection of temporary support methods used and the behaviour of the ground during tunnelling. The planning and design issues concentrate on aspects to ensure overall integrity and stability of both SCL projects. The success of various construction techniques utilised to construct the tunnels safely is discussed and a summary of the ground movements is presented.     

城市人行地道总体设计要点探讨

以合肥市某人行地道的设计为例,从建筑、结构、开挖支护、排水、消防及通风等方面综合论述了人行地道设计需要考虑的问题以及采取的方法,可供类似工程设计与施工参考。     

Immersed tunnel settlements. Part 1: nature of settlements

The prediction of short-term and long-term settlements is crucial in the design of all types of immersed tunnels. Settlement can result in immediate or future problems due to cracking and leakage, which can lead to corrosion of structural reinforcing steel, ice on the roadway, life-long pumping costs and deterioration of tunnel finish. This paper provides an overview of settlement experience that may be of help to future tunnel designers in more fully understanding this phenomenon when developing their projects. This is the first part of a two-part paper. Part 2 describes a series of immersed tunnel settlement case histories.     

三车道大断面高速公路隧道稳定性数值模拟

随着我国高等级公路的发展,三车道大断面公路隧道将成为高等级公路隧道的重要组成部分,这同时也对高速公路隧道的设计和施工提出了更高的要求.文章以杭新景高速公路设岭隧道为例,结合该隧道的监控量测,分析了围岩变形过程并针对监测数据进行了动态反馈,同时检验了施工单位根据反馈情况采取措施后的效果.最后通过Plaxis有限元软件模拟了整个隧道围岩的变形过程,取得了良好的效果.由此可见,通过有效的监控动态反馈及有限元模拟,能有效的对隧道开挖过程中的围岩变形进行预测,从而大大降低隧道施工中的风险,保证隧道的施工安全.     

平顶直墙大跨度隧道浅埋暗挖施工技术

通过杭州地铁4号线市民中心站2号、3号、6号通道下穿Ф1800污水管地段暗挖通道施工,对平顶直墙大跨度通道施工进行了总结,对原设计衬砌部分进行了优化,较好的解决了施工中出现的问题,从而为今后类似工程积累了施工经验。     

公路隧道水泥处治碎石排水基层施工技术

为防止地下水对公路隧道路面的侵蚀破坏,结合小康高速公路隧道的实际情况,设计采用水泥处治碎石排水基层。本文主要介绍隧道水泥处治碎石排水基层施工技术与质量措施,通过现场试验检测证明,水泥处治碎石排水基层满足设计技术要求,符合质量验收标准。