On advance geological forecast of tunnels on karst or varied geological conditions;
概论岩溶或地质复杂隧道隧洞地质灾害超前预报技术
Stress on Class tunnel restorations of the first mandibular molar;
下颌第一恒磨牙隧道洞型的应力分析
The practical method of tunnel entrance landscape design and its design procedure are presented in this paper.
提出了隧道洞口景观设计的实用方法及设计流程,并重点讨论了目前洞口景观设计的重要性和发展趋势;设计中如何采集洞口景观数据及如何利用洞口景观数据库;以及如何进行洞口景观点评价等在设计中应注意的几个问题。
For ensuring the stabilization of slope around tunnel entrance, the tunnel design criterion gives out the definite demands to solpe gradient and excavating high, but these demands are confined only the sort of surrounding rock, can not judge the influence of layer property of surrounding rock and ground water.
为了保证隧道洞口边仰坡的稳定 ,隧道设计规范对刷坡坡率和开挖高度有一定的控制要求 ,但这种要求仅局限于围岩的类别 ,而对围岩的层理性状和地下水对坡体稳定性的影响不能作出判断。
Research purposes:The construction of tunnel entrance is the key part of the whole engineering.
研究目的:隧道洞口段施工是整个隧道工程施工的关键。
By analyzing stress field of cavern tunnel diseases,the causes are studied and five reinforcement and protection grades for cavern tunnel diseases are given according to different defect form,defect behavior and development states,and corresponding examples are given.
通过对裸洞隧道病害形成的应力场分析,研究病害产生的原因,根据裸洞隧道病害的不同形式、病害表现和发展状态将整治防护措施分为五个等级,并给出了相应的示例。
Research purposes: Yichang-Wanzhou railway has 159 tunnels and 150 tunnel portals.
研究结论:隧道洞口发生滑坍除地质原因外,勘察资料不准确和不能及时进行方案完善是设计方面的主要原因,未按设计施工、未及时提出变更、施工方法不当、监控量测不及时是施工方面的主要原因。
Because of the influence of the engineering geologic condition, hydrogeological condition and artificial factor, it is easy to have landslide at tunnel portal.
由于受工程地质条件、水文地质条件及人为因素等影响,隧道洞口施工过程中易发生洞口滑坡。
This paper has studied a rockbolt-lattice strengthening technology and its functional mechanism and construction technology used in ahigh slope of the Xiaowang tunnel portal,this study presents that it s a good method to apply the rockbolt-lattice strengthening technology to strengthen thehigh slope of the tunnel portal.
针对肖王隧道洞口段高路堑边坡特点,通过稳定性分析,研究并提出了锚杆+格构加固技术在高边坡处治中应用的工作机理、施工技术及要点,研究表明,锚杆+格构加固技术在隧道洞口高边坡处治中取得了良好的应用效果,研究成果可供相关工程借鉴和参考。
Aseismic and seism-reducing modeling study for entrance of two-track tunnels
双洞隧道洞口段抗减震模型试验研究
Research on the Slop Stability and Control Technique at the Tunnel Entrance;
隧道洞口边坡稳定性与控制技术研究
Research on Slope Stability Around Tunnel Entrance in Loess Areas;
黄土地区隧道洞口段边坡稳定性研究
The Construction New Technology Researching and Theory Analyzing of Tunnel s Gate;
隧道洞口段施工技术研究和原理分析
Landslide stability analysis and control at portal of tunnel
隧道洞口滑坡稳定性分析及滑坡治理
Study on Green Tunnel Entrance Landscape and Its Evaluation System
隧道洞口绿色景观及其评价体系研究
Discussion on the Construction Scheme of Tunnel Entrance in Crowded Population Area
隧道洞口位于人群聚居区出洞施工方案探讨
Construction technology of soft surrounding rock in portal section with lateral pressure of Jindong tunnel
津洞隧道洞口偏压段软弱围岩施工技术
Numerical Simulation for the Pollution Effect between Portals of Twin Highway Tunnels
双洞公路隧道洞口废气污染影响的数值模拟
Landscape Design of Tunnel Portal--A Case in Wulaofeng Tunnel of West Lake Scenic Area in Hangzhou
隧道洞口景观设计——以杭州西湖风景区五老峰隧道为例
Studying of Huang Ta (Tao) Highway Tunnel Entrance on Landscape Design;
黄塔（桃）高速公路隧道洞口景观设计研究
Construction Crucial Technique of the Long-span Tunnel Portals in Unfavorable Geological Condition;
不良地质条件下大跨度隧道洞口施工关键技术
Numerical Simulation Study of Contaimination Diffusion from a Road Tunnel Portal;
城市公路隧道洞口污染物扩散数值模拟
Study on Construction Method and Support Parameters of Chenggongling Tunnel Portal Section;
成功岭隧道洞口段施工方法与支护参数的研究
Visualization Research on Flow Field Inducing from High-Speed Train Moving into Tunnel;
高速列车突入隧道洞口时流场的可视化研究
Study on Surrounding Rock Stability Around Tunnel Entrance in High Slope and Rock Stack Area;
高边坡岩堆地区隧道洞口段围岩稳定性分析
The Application of the CRD Method to the Bulongqing Tunnel
布陇箐隧道浅埋偏压洞口段施工技术
Construction technology for portal section on low-buried and unsymmetrical pressure tunnels
浅谈隧道偏压、浅埋洞口段施工技术
