围岩

By treating the fully anchored or grouted rock as the reinforcing material, we approach the problem by topology optimization.

本文将锚固或注浆加固后的岩体看成人工支护材料，并试图用拓扑方法解决它们在围岩中的布置。

The interlayer oxidized zone and the concentration of uranium has the typical characters of low temperature geochemical processes. Interlayer oxidized zone can be defined from the bedrock to horizon C under hypergene weathering by such parameters as chemical metamorphosing、index of chemical weathering and index of mineral chemical differentiation.(2)Major elements can be divided into sensitive group、 active、 weak active and inert groups according to chemical metamorphosing parameter and fractional migration potential. For major elements of multivalent in the active group( Fe_2O_3、 FeO) and U, the migration and concentration trend in interlayer oxidized zone is apparent.

层间氧化带形成和铀富集成矿是地下水在低温、常压、开放体系、非平衡状态对围岩长期作用结果，元素含量及其有关地球化学参数在氧化带不同亚带中表现出一定的变化和分布规律，除Fe_2O_3、FeO、Fe_2O_3／FeO外其它元素含量及其参数只在统计学上呈现规律性变化，而不具分带意义，具有典型的低温地球化学作用特点；利用风化作用化学蚀变参数PC值、化学风化指数ICA和矿物化学分异指数ICV将层间氧化带作用界定于表生风化作用的基岩到母质层阶段。

The results show that the degree of obliquities of laminar structural plane affects obviously the destabilization/failure mode of surrounding rock.

结果表明，层状结构面倾角大小对围岩的破坏失稳模式有显著的影响。

Huangshaping Pb-Zn deposit originated from high-middle temperature solutions. Structures developed in area consist of NNE-striking folds, N-S and nearly E-W faults system. There are Upper Devonian and Lower Carboniferous outcropped, and the Shidongzi Formation limestone of the later is the main host rock. Ore body has various shapes with a great number of minerals and complex chemical compositions.

黄沙坪铅锌矿床属高中温热液成因的金属矿床，矿区内构造主要包括北北东向为主的褶皱和南北向、近东西向为主的断裂构造系统；出露地层主要有上泥盆统和下石炭统，其中下石炭统石磴子组灰岩为主要赋矿围岩；区内矿体形态多样，矿石矿物种类繁多，化学成分复杂。

Similarly, outcrops of hard, erosionresistant rock may be left behind after softer surrounding rocks erode away.

同样，露头硬，erosionresistant 岩石可能会被遗弃后软围岩削弱了。

And later it was overprinted and reformed by the brittle structure and formed a complex ductile-brittle ...

在该带内已发现六个金矿体，赋矿围岩为蚀变的绿片岩、糜棱岩化碎裂岩和花岗质碎裂岩

The problem is simplified as a circular lined tunnel in half-space. The series solutions for the scatting waves in half-space and lining under the actions of P wave and SV wave are derived by wave expansion method under the assumption of larger circular arc.

接着，在对地震积分位移时程漂移、模型边界条件、模型横向计算范围几个数值动力计算的基本问题进行研究的基础上，用FLAC3D软件详细分析了山岭隧道洞身段在不同埋深、地震强度、激振方向、围岩和衬砌刚度条件下的地震响应。

This paper focuses on the classification and control of the stability of the surrounding rocks of stopes and roadways on the background of Xiadian Gold Mine. The association method of actual measurement, theoretical analysis and numerical simulation is used to analyse and research the law.

本文以招金集团夏甸金矿为背景，围绕对夏甸金矿巷道及采场围岩稳定性进行分类与控制这一主题，根据夏甸金矿的实际工程地质和开采技术情况，采用现场实测、理论分析与数值模拟相结合的方法，有针对性地展开了分析研究。

The big velocity difference between salt domes and surrounding rocks leads to poor reflection and distortion of salt bodies and substrata.

由于盐丘和围岩间存在巨大的速度差异，因此导致盐体本身和下伏地层在常规地震资料中出现反射品质降低、构造失真、畸变（如盐下石炭系目的层地震反射层在盐丘部位出现构造上拉现象），消除盐层的影响是含盐油气盆地勘探的重要课题。

Nanjing subway south-north line TA 12 section interved tunned between drumbuilding and Xuan Wu door,formed from Guround two tunnels.This interval tunnelsection is complex and changeful , forms to exceed little span tunnel , also has spantunnel , this interval tunnel pass through under the building cround new two sides onthe road mainly , line passes through major is Ⅰor Ⅱ kind surround rock.

南京地铁南北线TA12标鼓楼站至玄武门站区间隧道，由左右两条隧道组成，此区间隧道断面复杂多变，既形成了超小间距隧道，也有大跨度隧道，该区间隧道主要从路两侧既有建筑群下穿过，线路穿越的地层主要是Ⅰ、Ⅱ类围岩。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。