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- Tunnel wall rock classification 隧道围岩类别
- Wall Rock Classification 围岩分类
- BGS Igneous Rock Classification Scheme NADMSC-SLTT Vocanic Materials IUGS Igneous Rock. 中国火成岩岩石分类和命名方案。
- classification of wall rock of roadways 巷道围岩分类
- Wall rock is a special medium of underground engineering and its stability affects directly production and safety. 摘要围岩是地下工程类特殊的介质，其稳定性直接影响到生产和安全。
- The paper carefully analyzes bolt supporting system, and measures the parameters of coal wall rock in Fuxin diggings. 本文对锚杆支护理论进行了系统分析，并对阜新矿区煤巷围岩的参数进行了实验测定。
- Secondly, simulation elicits wall rock transmogrification under the different coal pillar and different stress. 其次模拟研究分析了留设煤柱宽度不同时以及地应力大小不一时沿空巷道围岩变形情况，得到了一些认识；
- The results show that both ore body and wall rock have weak or strong rockburst proneness. 结果表明,该矿矿体和围岩均具有发生弱或强烈岩爆的倾向性。
- The main wall rock alterations of the Kangshan goldfield are silication,sericitization,carbonicacidation and pyritization. 康山金矿田围岩蚀变主要为硅化、绢云母化、碳酸盐化及黄铁矿化。
- This paper puts forward the way of mining knowledge for surrounding rock classification through qualitatively analyzing the relationship between discontinuities and surrounding rock classification. 通过分析结构面与隧道围岩分级之间的关系，提出隧道围岩分级知识挖掘方法。
- In flat dip layer, the seam thickness control the stability of the wall rock, the thick-bedded hard rock is stable than the thin-bedded hard rock. 岩层厚度在缓倾斜时对围岩稳定起控制作用，厚层硬岩整体稳定性好于薄层状硬岩。
- The alteration distribution from ore body to wall rock is skarn-high silicification-low silicification-quartzification and carbonatization. 矿体至围岩明显有矽卡岩化-强硅化-弱硅化-石英、碳酸盐化的蚀变分带特征。
- Surrounding rocks classification plays a determinative role in the design and construction of tunnels. 摘要围岩分类对于隧道设计和施工起着决定性的作用。
- The wall rock alteration characteristics and the relationship between wallrock alteration and the alteration model are set up in the paper. 对花山花岗岩体中金矿的围岩蚀变特征和围岩蚀变与金矿化的关系进行了研究,并建立了蚀变模式。
- The lead-zinc ores can be classified into the hydrothermal vein type and the skarn type with strong wall rock alteration. 纳木错-嘉黎断裂带是以铜、铅、锌为主的多金属成矿带,矽卡岩型矿床是该区带典型矿床类型之一。
- The oecurrence of tourmalinite is the same as that of wall rock,but the obvious feature of the tourmalinite is microlaminated structure. 主要成分为微粒镁电气石，其次有石英、长石，少量粘土矿物、毒砂和黄铁矿。
- The mag matic water is a component of ore forming hydrothermal water.And the gold mater ial sources stem from the wall rock and the granite. 认为在热液蚀变作用过程中，稀土元素保持惰性，成矿热液与岩浆热液有关，赋矿围岩及矿区花岗岩提供了成矿物质。
- It is concluded that location of foot-wall drawing points are closely related to orebody dip, cut-off grade and ore grade of wall rock. 认为下盘放矿点位置与矿体倾角、放矿截止品位、围岩含矿品位有着密切的关系。
- Burnt rock is come into being coal bed self-ignite and bring wall rock metamorphose and has special engineering geological characteristics. 摘要烧变岩是煤层自燃引起周围围岩变质而形成的，具有特殊的工程地质性质。
- rock classification for tunnel exploration 坑探岩石分级
