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基于渝湘某高速公路在建隧道工程,结合其洞口段的地形地质、监控量测资料,以DP弹塑性本构模型为基础,建立了有限元数值仿真程序;分析了隧道围岩及支护结构的力学状态和稳定性,为隧道设计和施工提供了指导依据.并简要地提出其防治措施为:偏压浅埋隧道洞口段土体较为松散破碎,施工中应注意扰动及地下水的影响,并适时地对土体进行加固.图7,表1,参6.
Based on the project of tunnel under construction in Yuxiang expressway, combining with the topography, geology and monitoring data of its entrance section, a finite element numerical simulation program is established based on the DP elasto-plastic constitutive model. The analysis of surrounding rock and support The mechanics state and stability of the structure provide the basis for the design and construction of the tunnel, and briefly put forward the prevention and control measures as follows: the soil in the shallow section of the shallow shallow tunnel is loose and broken, the disturbance and the influence of groundwater should be noticed in the construction, And timely reinforcement of soil .Figure 7, Table 1, reference 6.