对求得的围岩和衬砌安全系数进行评价分析，形成黄土隧洞支护结构设计的定量方法。
Evaluating and analyzing the safety factors of the surrounding rock and the liner, quantitative methods of designing loess tunnel support structure are formatted.
模拟分析黄土隧洞围岩稳定性对了解黄土隧洞变形破坏机理，对黄土隧洞设计施工理论具有重要意义。
It is important to analyze the stability of surrounding loess of tunnel for understanding its failure mechanism and for its design and construction.
本课题主要是针对特殊地质的黄土隧洞，利用隧洞衬砌结构计算理论，建立黄土隧洞的衬砌结构计算数学模型。
This subject concerning the loess tunnel which has special geology utilized the tunnel lining structure calculation theory and established the mathematical model of loess tunnel lining structure.
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