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本文通过对Q2黄土地层隧道深埋段台阶法2种支护参数进行基于有限元理论的数值模拟计算,对两种支护参数条件下围岩变形大小及规律、支护结构受力特性进行了对比分析,并对Q2黄土地层隧道深埋段台阶法2种支护参数的合理性进行评价,可为黄土隧道支护参数的设计提供理论支撑。
In this paper, two kinds of support parameters of deep section of tunnel in loess tunnel are calculated by numerical simulation based on finite element theory. The deformation and the law of surrounding rock under two kinds of support parameters and the mechanical characteristics of supporting structure The comparative analysis and evaluation of the rationality of two kinds of support parameters for the step method of deep loess tunnel in the loess section can provide theoretical support for the design of the loess tunnel support parameters.