Relation between Uniaxial Compressive Strength and Physical Parameters of Rock in a Nuclear Power Plant

Abstract:

In order to improve the accuracy of the selection on rock mechanical parameters, the relation between uniaxial compressive strength (UCS) and physical mechanical parameters should be investigated. A great number of physical and mechanical tests on rock in the first-stage of Guangxi Fangchenggang Nuclear Power Plant (GFNPP) are conducted. Mineral identification tests of rocks are conducted, and rocks are divided into two groups (A and B) according to the result of the test. The correlation coefficient between rock UCS and rock physical parameters (porosity, density and P-wave velocity) are calculated by using Pearson’s analytical method. The result shows that the relationship between physical parameters and mechanical parameters of rock is influenced significantly by content of quartz. Regression analysis method is used to explore the relation between UCS and porosity, density, P-wave velocity of rock; combined with the dimensional analysis, the relation between UCS and rock physical parameters was established. Based on normality test and randomness test, the best fitting equation is determined as the empirical equation of UCS. The empirical equation was used to forecast the UCS of rock in the second-stage of GFNPP, comparative results show that the forecasting value and the experimental value are in good agreement.

• Periodical: Applied Mechanics and Materials (Volume 865)
• Pages: 373-382
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.865.373
• Online since: June 2017
• Authors: Jing Sen Liu*, Hai Bo Li, Bo Liu, Guo Kai Zhang, Wei Zhou
• Keywords: Dimension Analysis, Pearson Correlation Analysis, Physical Parameters of Rock, Regression Analysis, Uniaxial Compressive Strength

References

[1] G. M. An, Q. Y. Yang, L. J. Yang, et al. Comparison between static and dynamic elastic moduli of rock mass in a nuclear power plant, Rock Soil Mechan. 32(s1) (2011) 565-569.

[2] M. Q. You, C. D. Su, Effect of length of fine and coarse crystal marble specimens on uniaxial compression tests, Chin. J. Rock Mech. Eng. 23(22) (2004) 3754-3760.

[3] S. J. Yang, H. Zeng, H. L. Wang, Experimental analysis on mechanical effescts of loading rates on limestone, Chin. J. Geotech. Eng. 27(7) (2005) 786-788.

[4] K. Yang, L. Yuan, L. G. Qi, et al. Establishing predictive model for rock uniaxial compressive strength of No. 11-2 coal seam roof in Huainan mining area, Chin. J. Rock Soil Mech. Eng. 32(10) (2013) 1991-(1998).

[5] Per Horsrud, Estimating mechanical properties of shale from empirical correlations, SPE Drill. Complet. 16(02) (2001) 68-73.

DOI: 10.2118/56017-pa

[6] C. D. Chang, M. D. Zoback, A. Khaksar, Empirical relations between rock strength and physical properties in sedimentary rocks, J. Petrol. Sci. Eng. 51(3-4) (2006) 223-237.

DOI: 10.1016/j.petrol.2006.01.003

[7] Z. R. Meng, J. C. Zhang, T. Joachim, Relationship between physical and mechanical parameters and acoustic wave velocity of coal measures rocks, Chin. J. Geophys. 49(5) (2006) 1505-1510.

DOI: 10.1002/cjg2.959

[8] J. Jiang, J. Z. Sun, Y. H. Qiao, X. S. Yang, Comparison between static and dynamic parameters of grand buddha rockmass specimens in west JinYang mountain in TaiYuan, Chin. J. Rock Mech. Eng. 26(s1) (2007) 3452-3460.

[9] S. M. LIU, L. H. Xu, Y. Q. Li, Experimental study on rock physical and mechanical properties in Danjiangkou reservoir area, J. Huazhong Univ. Sci. Technol. (Urban Science Edition), 24(4) (2007) 54-58.

[10] J. F. Jin, X. B. Li, Z. Q. Yin, Realationship between physical parameters and acoustic wave velocity of dacite porphyry, Min. R&D, 31(2) (2011) 15-17.

[11] Evert Hoek, Edwin T Brown. Underground excavations in rock, (1980).

[12] P. B. Robert, F. Amann, P. K. Kaiser, et al. Interpretation of UCS test results for engineering design, 13th ISRM International Congress of Rock Mechanics, (2015).

[13] Isrm Suggested Methods. Rock characterization testing and monitoring. Pergamon Press, Oxford; 1981. pp.113-116.

[14] Astm. Standard Test Method for Elastic Moduli of Intact Rock Core Specimens in Uniaxial Compression. ASTM Stand0408(D3148)(1993).

DOI: 10.1520/d3148-96

[15] W. R. Dearman, F. J. Baynes, T. Y. Irfan, Engineering grading of weathered granite, Eng. Geol. 12 (1978) 345-374.

DOI: 10.1016/0013-7952(78)90018-2

[16] A. Tuǧrul, The effect of weathering on pore geometry and compressive strength of selected rock types from Turkey, Eng. Geol. 75(3) (2004) 215-227.

DOI: 10.1016/j.enggeo.2004.05.008

[17] L. Vernik, M. Bruno, C. Bovberg, Empirical relations between compressive strength and porosity of siliciclastic rocks, Int. J. Rock Mech. Min. Sci. Geomech. Abstr. 30(7) (1993) 677-680.

DOI: 10.1016/0148-9062(93)90004-w

[18] H. J. David, M. N. Toksöz, Ultrasonic P and S wave attenuation in dry and saturated rocks under pressure, J. Geophys. Res.: Solid Earth, 85(B2) (1980) 925-936.

DOI: 10.1029/jb085ib02p00925

[19] E. I. Mashinskii, Variants of the strain-amplitude dependence of elastic wave velocities in rocks under pressure, J. Geophys. Eng. 1(4) (2004) 295.

DOI: 10.1088/1742-2132/1/4/008