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新旧立体交叉隧道系统耦合演化的非线性规律研究尚处于探索阶段。基于穿越过程中与工后的新旧立体交叉隧道系统耦合作用过程与机制分析,定量分析了其耦合作用中应力与位移状态变化的全过程;根据隧道稳定性非线性分析,分别从岩土体的黏弹塑性、动力学与能量耗散等3方面研究了立体交叉隧道非线性演化规律,并建立了其发生耦合作用的黏弹塑性、动力学与能量的标准及其演化函数;在此基础上,系统总结了新旧立体交叉隧道系统耦合演化总体特征,指出其耦合区域在空间上具有拓展性,耦合演化在时间上具有延续性。其研究结果为立体交叉隧道稳定性定量分析与控制研究提供了新思路。
The research on the non-linear regularity of coupling and evolution between the old and the new three-dimensional cross-tunnel system is still under exploration. Based on the analysis of the coupled process and mechanism of the old and new crossing tunnel system during and after the crossing, the whole process of the change of stress and displacement in the coupling is quantitatively analyzed. According to the nonlinear analysis of tunnel stability, Viscoelasto-plasticity, kinetics and energy dissipation, the nonlinear evolution of the three-dimensional cross-over tunnel is studied and the criteria of visco-elasto-plasticity, dynamics and energy and its evolution function are established. , Systematically summarizes the overall characteristics of the coupling evolution of the old and the new three-dimensional cross-over tunnel system, points out that the coupling region has spatial expansibility and the coupling evolution has continuity in time. The research results provide new ideas for the quantitative analysis and control of the stability of the three-dimensional cross-over tunnels.