铁道标准设计
鐵道標準設計
철도표준설계
Railway Standard Design
2015年
10期
114-118
,共5页
隧道%软弱围岩%极高地应力%大变形%变形机理
隧道%軟弱圍巖%極高地應力%大變形%變形機理
수도%연약위암%겁고지응력%대변형%변형궤리
Tunnel%Soft rock%Extremely high ground stress%Large deformation%Deformation mecha-nism
关垭子隧道穿越极高地应力状态软岩，施工过程中发生了大变形。在工程地质勘查、现场调研、岩石力学试验及监控量测的基础上，通过分析隧道变形特征，从隧道埋深、施工方法、围岩岩性、地应力及地下水等方面研究该隧道大变形的发生机理。研究结果表明：该隧道大变形以围岩塑性变形为主，膨胀变形影响较小，并对类似隧道的设计施工进行了展望。
關埡子隧道穿越極高地應力狀態軟巖，施工過程中髮生瞭大變形。在工程地質勘查、現場調研、巖石力學試驗及鑑控量測的基礎上，通過分析隧道變形特徵，從隧道埋深、施工方法、圍巖巖性、地應力及地下水等方麵研究該隧道大變形的髮生機理。研究結果錶明：該隧道大變形以圍巖塑性變形為主，膨脹變形影響較小，併對類似隧道的設計施工進行瞭展望。
관오자수도천월겁고지응력상태연암，시공과정중발생료대변형。재공정지질감사、현장조연、암석역학시험급감공량측적기출상，통과분석수도변형특정，종수도매심、시공방법、위암암성、지응력급지하수등방면연구해수도대변형적발생궤리。연구결과표명：해수도대변형이위암소성변형위주，팽창변형영향교소，병대유사수도적설계시공진행료전망。
Guanyazi tunnel passes through soft rock of extremely high ground stress and experiences large deformation during construction. On the basis of engineering geology investigation, on-site survey, rock mechanics experiments and monitoring measurement, this paper studies the large deformation mechanism of the tunnel by analyzing tunnel deformation characteristics in terms of construction method, surrounding rock lithology, ground stress and groundwater. The results show that the tunnel large deformation is dominated by plastic deformation with a little swelling deformation. Future design and construction of similar tunnels are also envisaged.
