以软弱土中开挖的大直径双管隧道为例,采用三维数值分析方法研究隧道间的相互影响,对博鲁隧道支护体系进行了评价

Q4 Engineering
E. B. Aygar
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引用次数: 0

摘要

博卢隧道位于安卡拉-伊斯坦布尔公路项目上,该项目始于1993年,于2007年通车。它是一条三车道的双隧道。右侧隧道长度为2788m,左侧隧道长度为2954m。在博卢隧道施工期间,它遭受了两次地震,位于安卡拉入口处的Elmalık段隧道在1999年11月12日的Düzce地震后坍塌。坍塌后,隧道路线发生了变化。博卢隧道在地质上穿过北安那托利亚断层线主线和Düzce断层之间的构造块体。隧道的伊斯坦布尔一侧(Asarsuyu入口)位于变晶基岩内,安卡拉一侧(Elmalık入口)位于沉积岩内。这两个隧道单元被Bakakak断层切割。在Elmalık的入口处,隧道开挖阶段出现的最大问题位于Elmalşk断层。此外,在Elmalık右隧道断层穿越期间,1996年发生坍塌,1999年11月12日的Düzce地震中,Elmalşk左隧道完全关闭。采用新奥法设计的博鲁隧道所遇到的问题和所开发的支护系统包含了非常有价值的隧道信息。在本研究范围内,使用Flac3d程序对博卢隧道支护系统进行了三维检查,揭示了两条隧道相互作用的影响,以及顶部导坑、台阶和仰拱开挖的变形变化。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
An example of examining the effect of tunnels on each other in large diameter double tube tunnels excavated in weak soils with 3D numerical analysis, Evaluation of Bolu Tunnel support systems
Bolu Tunnel is located on the Ankara-Istanbul Highway projects which work started in 1993 and was opened to traffic in 2007. It was built as a 3-lane double tunnel. The tunnel lengths of the right tunnel are 2788 m and the left tunnel is 2954 m respectively. During the construction of the Bolu Tunnel, it was exposed to 2 earthquakes, and the Elmalık section of the tunnel, located at the entrance of Ankara, collapsed after the 12 November 1999 Düzce Earthquake. After this collapse, the tunnel route was changed. The Bolu Tunnel geologically passes through the tectonic block between the North Anatolian Fault Line mainline and the Düzce Fault. While the Istanbul side of the tunnel (Asarsuyu entrance) is located within the metacrystalline basement rocks, the Ankara side (Elmalık entrance) is located within the sedimentary rocks. These two units of the tunnel are cut by the Bakacak fault. At the entrance of Elmalık, where the biggest problems occurred during the excavation phase of the tunnel is located Elmalık fault.In this sectipn deformations of up to 1.2 m.. In addition, during the fault crossing of the Elmalık right tunnel, a collapse occurred in 1996, and in the 12 November 1999 Düzce Earthquake, the Elmalık left tunnel was completely closed. The problems experienced and the support systems developed in the Bolu Tunnels, which were designed with the New Austrian Tunneling Method, contain very valuable information in terms of tunneling. Within the scope of this study, Bolu Tunnel support systems were examined in 3D with the Flac3d program, the effect of the two tunnels on each other, the deformation changes in the top heading, bench and invert excavations were revealed.
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来源期刊
Scientific Mining Journal
Scientific Mining Journal Engineering-Industrial and Manufacturing Engineering
CiteScore
0.60
自引率
0.00%
发文量
7
期刊介绍: Scientific Mining Journal, which is published i n open access electronic environment and i n printed, is a periodical scientific journal of Union of Chambers of Turkish Engineers and Architects Chamber of Mining Engineers. The name of the journal was "Mining" until June 2016 and it has been changed to "Scientific Mining Journal" since September 2016 because it can be confused with popular journals with similar names and the ISSN number has been updated from 0024-9416 to 2564-7024. Scientific Mining Journal, published four times a year (March-June-September-December), aims to disseminate original scientific studies which are conducted according to the scientific norms and publication ethics at national and international scale, to scientists, mining engineers, the public; and thus to share scientific knowledge with society. The journal is in both Turkish and English. The journal covers theoretical, experimental, and applied research articles, which reflects the findings and results of an original research i n the field of mining engineering; review articles, which assess, evaluates, and interprets the findings of a comprehensive review of sufficient number of scientific articles and summarize them at present information and technology level; technical notes, which may be defined as a short article that describes a novel methodology o r technique; a case studies, which are based on the theoretical o r real professional practice and involves systematic data collection and analysis.
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