| 岩石里氏硬度值与单轴饱和抗压强度相关性分析初步探讨 |
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| 引用本文： | 王彬,李苍松,蔡建华,史永跃,王彦杰,张涛.岩石里氏硬度值与单轴饱和抗压强度相关性分析初步探讨[J].隧道建设,2020,40(Z2):174-179. |
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| 作者姓名： | 王彬 李苍松 蔡建华 史永跃 王彦杰 张涛 |
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| 作者单位： | (1. 西南石油大学地球科学与技术学院， 四川 成都 610500；2.
中国西南科学研究院有限公司，
四川 成都 611731） |
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| 摘 要： | 隧道施工期关于岩石坚硬程度指标的准确获取，是隧道围岩快速分级面临的实际问题，现行规范要求采用岩石单轴饱和抗压强度作为岩石坚硬程度的定量指标。为寻求关于岩石单轴饱和抗压强度最优的替代方案，对岩石单轴饱和抗压强度的不同替代方案和指标的优缺点进行分析比较，并通过使用里氏硬度计对不同岩性的岩石进行室内试验分析，研究泥岩类岩石和砂岩类岩石里氏硬度值与单轴饱和抗压强度之间的关系。利用数理统计软件SPSS24.0对岩石的里氏硬度值及单轴饱和抗压强度值进行回归分析，指出里氏硬度值与岩石单轴饱和抗压强度二者存在相关关系，且相关性较强，并构建不同岩性的岩石在饱和状态下单轴抗压强度与里氏硬度值的回归预测方程。
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| 关 键 词： | 隧道 围岩快速分级 岩石坚硬程度 单轴饱和抗压强度 里氏硬度 回归分析 |
Study of Correlation between Rock Leeb Hardnessand
Uniaxial Saturated Compressive Strength |
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| WANG Bin,LI Cangsong,CAI Jianhua,SHI Yongyue,WANG Yanjie,ZHANG Tao.Study of Correlation between Rock Leeb Hardnessand
Uniaxial Saturated Compressive Strength[J].Tunnel Construction,2020,40(Z2):174-179. |
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| Authors: | WANG Bin LI Cangsong CAI Jianhua SHI Yongyue WANG Yanjie ZHANG Tao |
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| Institution: | (1. Institutes of Earth Science and Technology,
Southwest Petroleum University, Chengdu 610500, Sichuan, China; 2.
China Railway Southwest Research Institute Co., Ltd., Chengdu
611731, Sichuan, China) |
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| Abstract: | The accurate acquisition of rock hardness index during
tunnel construction is a practical problem faced by rapid classification of
tunnel surrounding rock. The current code requires that uniaxial saturated
compressive strength of rock be used as the quantitative index of rock
hardness. To find the best alternative scheme for uniaxial saturated
compressive strength of rock, The advantages and disadvantages of different
alternatives and indices of uniaxial saturated compressive strength of rock are
analyzed and compared, and laboratory experimental analysis on rocks with
different lithologies is conducted using Leeb hardness tester, and the
relationship between Leeb hardness value and uniaxial saturated compressive
strength of mudstone rock and sandstone rock is studied. The regression
analysis of Leeb hardness and uniaxial saturated compressive strength of rocks
is carried out using mathematical statistical software SPSS24.0. It points out
that there is a strong correlation between Leeb hardness and uniaxial saturated
compressive strength of rocks, and the regression prediction equation of
uniaxial compressive strength and Leeb hardness value of rocks with different
lithologies in saturated state is constructed. |
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| Keywords: | tunnel rapid classification of surrounding rock rock hardness uniaxial saturated compressive strength Leeb hardness regression analysis |
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