鸳鸯会隧道开挖变形分析及控制措施

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DEFORMATION ANALYSIS AND REINFORCEMENT APPROACH OF YUANYANGHUI TUNNEL DURING EXCAVATION

摘要: 山平高速公路鸳鸯会隧道左线进洞施工中，隧道顶部和邻近坡体产生了较大变形，现场监测发现隧道最大沉降达34 cm。依据对该隧道及邻近坡体现场监测数据，应用相关理论，分析探讨洞口开挖引起隧道及仰坡不利变形的诱因，并根据监测分析结果提出控制措施。最后应用有限元方法模拟了所提出控制措施下隧道进洞开挖的过程，结果表明所提出控制措施是合理的。
- 黄土隧道 /
- 进洞施工 /
- 变形 /
- 控制
Abstract: Large deformation on the tunnel top and adjacent slope occurred during the face excavation construction of left line of Yuanyanghui tunnel on Shanping express highway, with maximal displacement of 34 cm monitored on site.Based on the analysis of tunnel construction process, site monitoring was carried out to the tunnel and adjacent slope, relevant theory and method were applied to investigate the inducement of its unfavorable deformation caused by excavation of tunnel opening, and control measures were also proposed according to monitoring analysis results.The face excavation construction under the control measures was analyzed by numeral simulation, it turned out to be reasonable.
- loess tunnel /
- construction of tunnel entrance /
- deformation /
- control measures