Elastic resistant coefficient, deformation and compressive moduli of surrounding rock in large-section loess tunnel are very important for design of tunnel.
对于高速铁路大断面黄土隧道严格的设计计算而言，黄土隧道围岩的弹性抗力系数、变形模量和压缩模量十分重要。
Evaluating and analyzing the safety factors of the surrounding rock and the liner, quantitative methods of designing loess tunnel support structure are formatted.
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。
The surrounding rock engineering geology is not only the material foundation of producing disasters in loess tunnel, but also the carrier of studying the geological disasters.
围岩工程地质条件既是产生隧道地质灾害的物质基础，又是研究隧道地质灾害的载体，撇开人为因素隧道地质灾害都可以从围岩工程地质条件中找到根源。
From the above analysis, it is shown that under the condition of steel arch support, the support effect of systematic rock bolts in loess tunnel is not obvious, which can be ignored.
综合以上分析表明，在黄土隧道中，钢架支护条件下的系统锚杆支护效果不明显，可以取消。
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.
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。
Loess has the characteristics of structural properties, such as incomplete consolidation, collapsibility; and the multi-arch tunnel of highway has complex excavation steps and structure stress.
由于黄土具有结构性、欠压密性和土结构性受损易发生湿陷等特性，再加上会路连拱隧道施工开挖工序多，结构受力复杂。
Therefore, this article analyzes the reasons that generating loess collapse in tunnel excavation and how to prevent collapse in the construction is briefly discussed.
为此，本文分析了在黄土隧道开挖中产生坍塌的原因，对如何在施工中预防坍塌进行了简要的探讨。
The lining cracks are widespread diseases of highway tunnel in the loess.
衬砌开裂是黄土公路隧道普遍存在的病害。
Lishi tunnel is the first loess multi-arch tunnel in China. The designs of the tunnel are briefly introduced, including lining structure, prevention drainage treatments and construction process.
离石隧道是我国第一座黄土连拱隧道，简要介绍了该隧道的衬砌结构、防排水处理、施工工序等的设计概况。
On the basis of the disease evolution of Xinzhuangling Highway Tunnel in loess, the disease reasons are analyzed through numerical simulation and field observation.
针对新庄岭黄土公路隧道地表裂缝和衬砌开裂的病害特征，探讨了病害产生机理，并运用仿真、实测等手段详细分析了病害原因。
Lishi tunnel is the first loess multi-arch tunnel in our country, which is a solid engineering of scientific research projects belonging to the Ministry of Communications.
离石隧道是我国第一座黄土连拱隧道，是交通部科研项目的实体工程。
It is important to analyze the stability of surrounding loess of tunnel for understanding its failure mechanism and for its design and construction.
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。
If the tunnel in the loess gully towards or parallels to side with the loess Plateau, while cover is thin or bias, it easily occurs collapse or landslides.
假如隧道在较长范围内沿着黄土冲沟走向或者与黄土塬边平行走向，而覆盖层又较薄或偏压很大，就会轻易发生较大的坍塌或滑坡现象。
The paper introduced the choice and construction process of loess multi-arch tunnel middle wall, analyzed monitoring and measurement of strengthening the middle wall for reference.
介绍了在黄土地区双连拱隧道中墙的选择及施工过程，并分析了如何加强对中墙的监控量测等。
According to the final results of analysis, a reasonable excavation length of inverted arch in one step was put forward and applied to the construction of multi-arch tunnel in loess.
最后提出了最佳的黄土仰拱一次性开挖长度，并应用于黄土连拱隧道的施工。
It is shown by the analysis that the steel grid and section steel are both applicable to the tunnel in the viscous old accumulation loess of degree IV, but steel grid is more advantageous.
经综合分析认为型钢拱架及格栅拱架均能适用于IV级黏质老黄土隧道，但格栅拱架更具优越性。
It is shown by the analysis that the steel grid and section steel are both applicable to the tunnel in the viscous old accumulation loess of degree IV, but steel grid is more advantageous.
经综合分析认为型钢拱架及格栅拱架均能适用于IV级黏质老黄土隧道，但格栅拱架更具优越性。
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