Volume 22 Issue 4
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Article Navigation >  Journal of Traffic and Transportation Engineering  > 2022  >  22(4): 148-158
CHEN Jian-xun, CHEN Li-jun, LUO Yan-bin, XIE Jiang-tao, WU Yun-fei, LIU Wei-wei. Conversion relationship between uniaxial compressive strength and point load strength of sandy slate[J]. Journal of Traffic and Transportation Engineering, 2022, 22(4): 148-158. doi: 10.19818/j.cnki.1671-1637.2022.04.011
Citation: CHEN Jian-xun, CHEN Li-jun, LUO Yan-bin, XIE Jiang-tao, WU Yun-fei, LIU Wei-wei. Conversion relationship between uniaxial compressive strength and point load strength of sandy slate[J]. Journal of Traffic and Transportation Engineering, 2022, 22(4): 148-158. doi: 10.19818/j.cnki.1671-1637.2022.04.011
shu

Conversion relationship between uniaxial compressive strength and point load strength of sandy slate

doi: 10.19818/j.cnki.1671-1637.2022.04.011

  • School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China

Funds:

National Natural Science Foundation of China 41831286

More Information
  • Author Bio:

    CHEN Jian-xun(1969), male, professor, PhD, chenjx1969@chd.edu.cn

    CHEN Li-jun(1986-), male, associate professor, PhD, chenlijun2004@126.com

  • Received Date: 2022-02-28
    Available Online: 2022-10-08
  • Publish Date: 2022-08-25
    Abstract
  • The sandy slate exposed in the excavation of the Muzhailing Tunnel of Weiyuan-Wudu Expressway in Gansu Province was taken as the object, and the uniaxial compressive strength test and point load strength test of sandy slate were carried out. The uniaxial compressive strength and point load strength of sandy slate as well as their conversion relationship were obtained through a normal distribution test, highly abnormal data elimination, and confidence interval strength statistic analysis of the test data. In addition, the conversion formulas were compared with those recommended by relevant codes for rock tests and the International Society for Rock Mechanics (ISRM). Research results show that the uniaxial compressive strength of saturated sandy slate obeys the normal distribution, with an average value of 56.3 MPa and a confidence interval of 49.2-63.5 MPa under a confidence level of 95%. The point load strength of saturated sandy slates is not completely consistent with the normal distribution, with an average value of 7.36 MPa and a confidence interval of 6.50-8.22 MPa under a confidence level of 95%. There is a significant linear positive correlation between the point load strength and uniaxial compressive strength of the saturated sandy slate. The rock strength is affected by the direction, filler, width, and length of internal joints and fissures of each specimen, and the overall discreteness of the strength data is high. The conversion coefficients between the uniaxial compressive strength and point load strength of sandy slate in saturated and dryed states are 7.72 and 8.72, respectively. They are obviously smaller than the conversion coefficient ranging from 15 to 30 in most studies. The reason is that there are bedding or joints and fissures with different angles in the sandy slate, and the uniaxial compressive strength is greatly affected by the internal joints and fissures of the specimen, resulting in a low average strength, while the point load strength is less affected by the internal joints and fissures of the specimen. The uniaxial compressive strength of sandy slate predicted by the formulas recommended by codes and ISRM is 2-4 times the measured value and will inevitably lead to large deviations in tunnel designs. In comparison with the formulas recommended by codes and ISRM, the obtained relative error of the conversion relationship between the uniaxial compressive strength and point load strength is not more than 15%. It can be used as a useful supplement to the formulas in codes.

     

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    • References(31)
  • [1]
    戴永浩, 陈卫忠, 田洪铭, 等. 大梁隧道软岩大变形及其支护方案研究[J]. 岩石力学与工程学报, 2015, 34(增2): 4149-4156. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX2015S2063.htm

    DAI Yong-hao, CHEN Wei-zhong, TIAN Hong-ming, et al. Study of large deformation and support measures of Daliang Tunnel with soft surrounding rockmass[J]. Chinese Journal of Rock Mechanics and Engineering, 2015, 34(S2): 4149-4156. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX2015S2063.htm
    [2]
    李宁, 李国良. 兰渝铁路特殊复杂地质隧道修建技术[J]. 隧道建设(中英文), 2018, 38(3): 481-490. https://www.cnki.com.cn/Article/CJFDTOTAL-JSSD201803020.htm

    LI Ning, LI Guo-liang. Construction technologies for tunnels in special and complicated geology of Lanzhou-Chongqing Railway[J]. Tunnel Construction, 2018, 38(3): 481-490. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-JSSD201803020.htm
    [3]
    刘志强, 吴剑, 师亚龙, 等. 挤压性大变形隧道研究现状与展望[J]. 现代隧道技术, 2019, 56(增1): 41-50. doi: 10.13807/j.cnki.mtt.2019.S1.006

    LIU Zhi-qiang, WU Jian, SHI Ya-long, et al. A summary of support and construction methods of tunnels with high stress and large deformation[J]. Modern Tunnelling Technology, 2019, 56(S1): 41-50. (in Chinese) doi: 10.13807/j.cnki.mtt.2019.S1.006
    [4]
    李志军, 郭新新, 马振旺, 等. 挤压大变形隧道研究现状及高强预应力一次(型)支护体系[J]. 隧道建设(中英文), 2020, 40(6): 755-782. https://www.cnki.com.cn/Article/CJFDTOTAL-JSSD202006001.htm

    LI Zhi-jun, GUO Xin-xin, MA Zhen-wang, et al. Research status and high-strength pre-stressed primary (type) support system for tunnels with large deformation under squeezing conditions[J]. Tunnel Construction, 2020, 40(6): 755-782. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-JSSD202006001.htm
    [5]
    谭忠盛, 杨旸, 陈伟, 等. 中老铁路高地应力软岩隧道大变形控制技术研究[J]. 铁道学报, 2020, 42(12): 171-178. doi: 10.3969/j.issn.1001-8360.2020.12.022

    TAN Zhong-sheng, YANG Yang, CHEN Wei, et al. Large deformation control technology of high geostress soft rock tunnel of China-Laos Railway[J]. Journal of the China Railway Society, 2020, 42(12): 171-178. (in Chinese) doi: 10.3969/j.issn.1001-8360.2020.12.022
    [6]
    吴永胜, 谭忠盛, 李少孟. 挤压性大变形隧道围岩基本特性的试验研究[J]. 土木工程学报, 2015, 48(增1): 398-402. https://www.cnki.com.cn/Article/CJFDTOTAL-TMGC2015S1071.htm

    WU Yong-sheng, TAN Zhong-sheng, LI Shao-meng. Experimental study on the basic characteristics of tunnel in squeezing surrounding rock with large deformation[J]. China Civil Engineering Journal, 2015, 48(S1): 398-402. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-TMGC2015S1071.htm
    [7]
    刘宁, 张传庆, 褚卫江, 等. 深埋绿泥石片岩变形特征及稳定性分析[J]. 岩石力学与工程学报, 2013, 32(10): 2045-2052. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX201310014.htm

    LIU Ning, ZHANG Chuan-qing, CHU Wei-jiang, et al. Deformation behavior and stability analysis of deep chlorite schist[J]. Chinese Journal of Rock Mechanics and Engineering, 2013, 32(10): 2045-2052. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX201310014.htm
    [8]
    陈建勋, 陈丽俊, 罗彦斌, 等. 大跨度绿泥石片岩隧道大变形机理与控制方法[J]. 交通运输工程学报, 2021, 21(2): 93-106. doi: 10.19818/j.cnki.1671-1637.2021.02.008

    CHEN Jian-xun, CHEN Li-jun, LUO Yan-bin, et al. Mechanism and control method of large deformation for large-span chlorite schist tunnel[J]. Journal of Traffic and Transportation Engineering, 2021, 21(2): 93-106. (in Chinese) doi: 10.19818/j.cnki.1671-1637.2021.02.008
    [9]
    郭小龙, 谭忠盛, 李磊, 等. 高地应力陡倾层状软岩隧道变形破坏机理分析[J]. 土木工程学报, 2017, 50(增2): 38-44. https://www.cnki.com.cn/Article/CJFDTOTAL-TMGC2017S2007.htm

    GUO Xiao-long, TAN Zhong-sheng, LI Lei, et al. Deformation and failure mechanism of layered soft rock tunnel under high stress[J]. China Civil Engineering Journal, 2017, 50(S2): 38-44. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-TMGC2017S2007.htm
    [10]
    王乐华, 牛草原, 张冰祎, 等. 不同应力路径下深埋软岩力学特性试验研究[J]. 岩石力学与工程学报, 2019, 38(5): 973-981. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX201905012.htm

    WANG Le-hua, NIU Cao-yuan, ZHANG Bing-yi, et al. Experimental study on mechanical properties of deep-buried soft rock under different stress paths[J]. Chinese Journal of Rock Mechanics and Engineering, 2019, 38(5): 973-981. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX201905012.htm
    [11]
    姚强岭, 李学华, 朱柳, 等. 煤岩体地质力学参数原位测试系统开发与应用[J]. 中国矿业大学学报, 2019, 48(6): 1169-1176. https://www.cnki.com.cn/Article/CJFDTOTAL-ZGKD201906001.htm

    YAO Qiang-ling, LI Xue-hua, ZHU Liu, et al. Development and application of in-situ testing system for geomechanical parameters of coal and rock mass[J]. Journal of China University of Mining and Technology, 2019, 48(6): 1169-1176. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-ZGKD201906001.htm
    [12]
    MOMENI E, JAHED ARMAGHANI D, HAJIHASSANI M, et al. Prediction of uniaxial compressive strength of rock samples using hybrid particle swarm optimization-based artificial neural networks[J]. Measurement, 2015, 60: 50-63.
    [13]
    李文, 谭卓英. 基于P波模量的岩石单轴抗压强度预测[J]. 岩土力学, 2016, 37(增2): 381-387. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX2016S2049.htm

    LI Wen, TAN Zhuo-ying. Prediction of uniaxial compressive strength of rock based on P-wave modulus[J]. Rock and Soil Mechanics, 2016, 37(S2): 381-387. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX2016S2049.htm
    [14]
    孟召平, 张吉昌, TIEDEMANN J. 煤系岩石物理力学参数与声波速度之间的关系[J]. 地球物理学报, 2006, 49(5): 1505-1510. https://www.cnki.com.cn/Article/CJFDTOTAL-DQWX200605030.htm

    MENG Zhao-ping, ZHANG Ji-chang, TIEDEMANN J. Relationship between physical and mechanical parameters and acoustic wave velocity of coal measures rocks[J]. Chinese Journal of Geophysics, 2006, 49(5): 1505-1510. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-DQWX200605030.htm
    [15]
    王敏生, 李祖奎. 测井声波预测岩石力学特性的研究与应用[J]. 采矿与安全工程学报, 2007, 24(1): 74-78, 83. https://www.cnki.com.cn/Article/CJFDTOTAL-KSYL200701016.htm

    WANG Min-sheng, LI Zu-kui. Research and application on prediction of rock mechanics parameters based on acoustic log data[J]. Journal of Mining and Safety Engineering, 2007, 24(1): 74-78, 83. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-KSYL200701016.htm
    [16]
    钟雨田, 徐凡献, 马留闯, 等. 岩石点荷载试验在隧道动态围岩分级中的应用——以郑万高铁向家湾隧道为例[J]. 科学技术与工程, 2020, 20(24): 10052-10059. https://www.cnki.com.cn/Article/CJFDTOTAL-KXJS202024053.htm

    ZHONG Yu-tian, XU Fan-xian, MA Liu-chuang, et al. Application of rock point load tests in dynamic surrounding rock classification of tunnels: take Xiangjiawan Tunnel along Zhengzhu-Wanzhou High-Speed Railway as example[J]. Science Technology and Engineering, 2020, 20(24): 10052-10059. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-KXJS202024053.htm
    [17]
    董平, 曹健, 姜永基. 点荷载试验评价孔底岩基强度和承载力的方法[J]. 岩土力学, 2001, 22(1): 92-95. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX200101024.htm

    DONG Ping, CAO Jian, JIANG Yong-ji. The point load method for the evaluation of strength and bearing capacity of rock foundation in the artificially excavated holes for piles[J]. Rock and Soil Mechanics, 2001, 22(1): 92-95. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX200101024.htm
    [18]
    付志亮, 王亮. 煤层顶底板岩石点荷载强度与拉压强度对比试验研究[J]. 岩石力学与工程学报, 2013, 32(1): 88-96. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX201301013.htm

    FU Zhi-liang WANG Liang. Comparative experimental research on point load strength, uniaxial compressive strength and tensile strength for rocks in roof and floor of coal seam[J]. Chinese Journal of Rock Mechanics and Engineering, 2013, 32(1): 88-96. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX201301013.htm
    [19]
    周哲, 陈善雄, 戴张俊, 等. 基于点荷载试验的新生代红砂岩强度软化规律研究[J]. 岩土力学, 2021, 42(11): 2997-3007. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX202111010.htm

    ZHOU Zhe, CHEN Shan-xiong, DAI Zhang-jun, et al. Study on strength softening law of Cenozoic red sandstone based on point load test[J]. Rock and Soil Mechanics, 2021, 42(11): 2997-3007. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX202111010.htm
    [20]
    D'ANDREA D V, FISHER R L, ELSON D E. Prediction of compression strength from other rock properties[R]. Washington DC: United States Department of the Interior Bureau of Mines, 1965.
    [21]
    BROCH E, FRANKLIN J A. The point-load strength test[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts, 1972, 9(6): 669-676.
    [22]
    BIENIAWSKI Z T. The point-load test in geotechnical practice[J]. Engineering Geology, 1975, 9(1): 1-11.
    [23]
    谭国焕, 李启光, 徐钺, 等. 香港岩石的硬度与点荷载指标和强度的关系[J]. 岩土力学, 1999, 20(2): 52-56. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX199902011.htm

    TAN Guo-huan, LI Qi-guang, XU Yue, et al. Hardness and point load indices, strength of Hong Kong rocks[J]. Rock and Soil Mechanics, 1999, 20(2): 52-56. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX199902011.htm
    [24]
    曾伟雄, 林国赞. 岩石单轴饱和抗压强度的点荷载试验方法设计与探讨[J]. 岩石力学与工程学报, 2003, 22(4): 566-568. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX200304013.htm

    ZENG Wei-xiong, LIN Guo-zan. Design of rock point load test methods for research of saturated uniaxial compressive rock strength[J]. Chinese Journal of Rock Mechanics and Engineering, 2003, 22(4): 566-568. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX200304013.htm
    [25]
    SINGH T N, KAINTHOLA A, VENKATESH A. Correlation between point load index and uniaxial compressive strength for different rock types[J]. Rock Mechanics and Rock Engineering, 2012, 45(2): 259-264.
    [26]
    KAYA A, KARAMAN K. Utilizing the strength conversion factor in the estimation of uniaxial compressive strength from the point load index[J]. Bulletin of Engineering Geology and the Environment, 2016, 75(1): 341-357.
    [27]
    ENDAIT M, JUNEJA A. New correlations between uniaxial compressive strength and point load strength of basalt[J]. International Journal of Geotechnical Engineering, 2015, 9(4): 348-53.
    [28]
    KAHRAMAN S. The determination of uniaxial compressive strength from point load strength for pyroclastic rocks[J]. Engineering Geology, 2014, 170: 33-42.
    [29]
    FRANKLIN J A. Suggested method for determining point load strength[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts, 1985, 22(2): 51-60.
    [30]
    向贵府, 刘洋, 许模, 等. 某水电站厂房洞室群围岩点荷载强度试验成果分析及利用研究[J]. 水利水电技术, 2017, 48(12): 82-87, 105. https://www.cnki.com.cn/Article/CJFDTOTAL-SJWJ201712014.htm

    XIANG Gui-fu, LIU Yang, XU Mo, et al. Study on analysis and utilization of result from point-load strength experiment on surrounding rock of cavern group for powerhouse of a hydropower plant[J]. Water Resources and Hydropower Engineering, 2017, 48(12): 82-87, 105. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-SJWJ201712014.htm
    [31]
    张元胤, 李克钢. 几种岩石点荷载强度与单轴抗压强度的相关性[J]. 金属矿山, 2017(2): 19-23. https://www.cnki.com.cn/Article/CJFDTOTAL-JSKS201702005.htm

    ZHANG Yuan-yin, LI Ke-gang. The correlation between the point load strength and uniaxial compression strength of several kinds of rocks[J]. Metal Mine, 2017(2): 19-23. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-JSKS201702005.htm
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