To strengthen loose surrounding rock, we can support and strengthen it by hollow grouting anchor so as to modify and stabilize its structure.
为了加固松动的围岩，可通过用中空注浆锚杆对其进行支护和加固，达到改良和稳固其结构的目的。
In this paper, the principle, function and structural design of measuring - data management system for surrounding rock and support structure of highway tunnel are presented.
文章论述了开发公路隧道围岩与支护结构量测数据管理系统的原理，介绍了系统的功能和数据结构设计。
In situ stress is one of the basic parameters for the stability of surrounding rock and the design of support structure.
初始地应力是地下工程围岩稳定与支护结构设计的一个基本参数。
The primary support and the second lining of large-spanned tunnel have endured different surrounding rock stress because of the influence of structure and span of tunnel.
大拱隧道受结构和跨度的影响，其初期支护与二次衬砌各自承受不同的围岩压力。
The surrounding rock deformation of highway tunnel is an important index to assess its stability and economy of support structure in NATM.
隧道新奥法施工中，常以围岩变形量作为评判围岩稳定性和支护结构经济合理性的重要指标。
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。
Therefore, it is necessary to specially research the optimization for support structure of tunnel and failure probability analysis for tunnel surrounding rock deformation.
因此，很有必要对隧道支护优化和围岩变形破坏概率分析进行专门研究。
The regularity of stress and strain of surrounding rock and support structure when using(3-heading) excavation method to construct double-arc tunnel is carried out by FEM numerical method.
应用有限元数值方法，对连拱隧道“三导洞法”施工时围岩和结构的受力、变形规律进行了分析。在两正洞拱部施工的时候，左右洞拱顶沉降约占最终沉降的70%。
The regularity of stress and strain of surrounding rock and support structure when using(3-heading) excavation method to construct double-arc tunnel is carried out by FEM numerical method.
应用有限元数值方法，对连拱隧道“三导洞法”施工时围岩和结构的受力、变形规律进行了分析。在两正洞拱部施工的时候，左右洞拱顶沉降约占最终沉降的70%。
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