| 基于矿物结构与钻探的花岗岩地质强度指标研究及应用 |
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| 引用本文： | 林达明,尚彦军,吴锋波,张巍,张翔.基于矿物结构与钻探的花岗岩地质强度指标研究及应用[J].岩石力学与工程学报,2011,30(4):761-768. |
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| 作者姓名： | 林达明 尚彦军 吴锋波 张巍 张翔 |
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| 作者单位： | (1. 中国科学院地质与地球物理研究所 中国科学院工程地质力学重点实验室，北京 100029；2. 中国科学院研究生院，北京 100049；
3. 中国科学院高能物理研究所东莞中子科学中心，广东 东莞 523780) |
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| 基金项目： | 国家重点基础研究发展规划(973)项目，国家自然科学基金资助项目 |
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| 摘 要： | 受Hoek对泥砂岩地质强度指标(GSI)图研究的启发，在野外工作和室内试验的基础上，尝试建立一个基于矿物结构与钻探的花岗岩GSI量化取值图：(1) 该图引进岩石矿物结构、完整岩芯长度、节理条件等参数来对GSI取值进行量化；(2) 用典型完整岩芯照片代替GSI取值图里岩体结构的素描图，并结合野外岩芯RQD、采芯率、岩体结构等特征对该照片进行描述。根据Hoek-Brown准则，利用该GSI图计算出花岗岩的弹性模量E，其与勘察单位给出的E值最小误差为0.11 GPa，说明该图具有一定的科学性，可用于钻探的场地花岗岩体力学参数估算。
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| 关 键 词： | 岩石力学地质强度指标岩石矿物结构花岗岩钻探 |
| 收稿时间： | 2010-11-12; |
STUDY OF GEOLOGICAL STRENGTH INDEX FOR GRANITE BASED ON MINERAL STRUCTURE AND DRILLING AND ITS APPLICATION |
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| LIN Daming,SHANG Yanjun,WU Fengbo,ZHANG Wei,ZHANG Xiang.STUDY OF GEOLOGICAL STRENGTH INDEX FOR GRANITE BASED ON MINERAL STRUCTURE AND DRILLING AND ITS APPLICATION[J].Chinese Journal of Rock Mechanics and Engineering,2011,30(4):761-768. |
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| Authors: | LIN Daming SHANG Yanjun WU Fengbo ZHANG Wei ZHANG Xiang |
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| Affiliation: | (1. Key Laboratory of Engineering Geomechanics，Institute of Geology and Geophysics，Chinese Academy of Sciences，Beijing 100029，China；2. Graduate University of Chinese Academy of Sciences，Beijing 100049，China；3. Dongguan Neutrons Science Center，Institute of High-Energy Physics，Chinese Academy of Sciences，Dongguan，Guangdong 523780，China) |
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| Abstract: | Inspired by the flysch which was given by Hoek in RocLab software and based on the field work and lab experiment,a quantitative diagram of the geological strength index(GSI) for granite based on mineral structure and drilling is established;of which the process is as follows:(1) Mineral structure,rock core length and joint condition of rock are introduced in this diagram to help the quantitative study of GSI.(2) Try to use the typical picture of field core to substitute the sketch drawing given by Hoek.Comb... |
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| Keywords: | rock mechanics geological strength index(GSI) mineral structure of rock granite drilling |
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