围岩

In order to ensure safety of excavation, convergences of the tunnel and deformation of surrounding soil are examined by soil test and site monitoring as well as three-dimensional finite element analysis.

为此，在隧道施工期间，通过土工试验、隧道收敛和围岩内部位移的现场监测、隧道变形的三维有限元仿真计算等手段，对该隧道的变形规律进行了系统研究，获得了大量试验数据。

The key of maintaining the tunnel stability lies on how to deal with the advance core soil ahead of working face, which is obtained on basis of analysis on the problems in high speed railway tunnels with big crosssections in soft surrounding rock or soil. Fullface prereinforcing method by fiberglass bolts can enhance the equivalent rigidity of the advance core soil and control the deformation of the advance core soil, so that arch effect can play its role naturally and assure the excavation safety.

总结分析了目前高速铁路大断面软弱围岩或土质隧道施工中存在的问题，认为如何处理好掌子面前方的&待挖核心体&是控制此类隧道整体稳定性的关键，运用沿隧道纵向全断面预加固的易切削玻璃纤维锚杆来提高&待挖核心体&的等效刚度，控制&待挖核心体&的变形，使得隧道周边的拱效应能自然发挥作用，可以保证隧道能够全断面安全、顺利开挖掘进。

Laxiwa Hydropower station is located in a high mountain valley and narrow valleys, where the regional geostress field is higher. Besides, local existence of tectonic fracture zone and size of large-scale excavation are common phenomena in this project. The surrounding rock of hydropower plant is mainly granite, which are hard and brittle rock, this kind of rock is very detrimental to the stability of the cavern.

拉西瓦水电站厂房地处峡谷山高坡陡，河谷狭窄，区域地应力场较高，局部存在构造破碎带，同时开挖尺寸规模巨大，围岩主要为脆硬的花岗岩，对洞室稳定极为不利。

Passage width influences stress of the middle part of passage significantly, displaying linear relationship.

利用三维有限差分程序对过江双线盾构隧道横向疏散通道进行力学特性分析，考虑围岩、水压及隧道衬砌相互作用，选取覆土最浅且水压最大时工况建立了计算模型，利用该计算模型分析了不同横通道宽度和两主隧道差异沉降对结构的受力影响规律。

The analysis result, are compared with the results of the FEM calculation.

通过围岩反算出喷层的厚度，并与设计进行比较，获得较满意的结果。

By analyzing plenty of experimental references, it expatiates on the characteristics of the compositions, mineral and chemistry ingredients of the faults, and emphasizes the effects influenced by the outer dynamic geology action, the surrounding rock environment and the lodging environment.

通过大量的分析试验资料，阐述了断层的颗粒成分、矿物成分和化学成分特征，强调了外动力地质作用、围岩环境、赋存环境对断层岩物质成分的影响和制约作用。

In addition, still discussed to spray the anchor man to pay to protect, open to dig the way, this model , the strength theories and break the layer to round the influence of the rock stability analysis result.

此外，还讨论了喷锚支护、开挖方式、本构模型、强度理论及断层等对围岩稳定分析结果的影响。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。