Since 1963
ARTICLE
Effect of water content on the mechanical behavior and energy evolution of soft rock under uniaxial compression
1
School of Architectural Engineering, Sichuan Polytechnic University, Deyang, China
2
China Anergy Group Third Engineering Bureau Co. Ltd., Chengdu, China
Submission date: 2024-06-04
Final revision date: 2024-11-23
Acceptance date: 2025-03-07
Online publication date: 2025-04-15
Corresponding author
KEYWORDS
TOPICS
ABSTRACT
To investigate the influence of water content on the mechanical behavior and the energy evolution law of soft rocks, uniaxial compression tests were carried out on soft rock samples prepared from rock-like materials with different water contents. The test results suggest that under uniaxial compression conditions, as the water content of the soft rock samples increases, the failure pattern is single axial splitting failure (ASF), axial splitting local expansion mixed failure and single local expansion failure (LEF), respectively. The uniaxial compressive strength (UCS) exhibits an exponential decrease, while the elastic modulus displays a linear decline. Additionally, the axial peak strain initially declines and then increases. The total and elastic energies increase exponentially, whereas the dissipated energy decreases linearly. Elastic energy as a percentage of total energy decreases, while dissipated energy as a percentage of total energy increases.
REFERENCES (24)
1.
Chen, Z.Q., He, C., Wu, D., Xu, G.W., & Yang, W.B. (2017). Fracture evolution and energy mechanism of deep-buried carbonaceous slate. Acta Geotechnica, 12 (6), 1243–1260. https://doi.org/10.1007/s11440....
2.
Cherblanc, F., Berthonneau, J., Bromblet, P., & Huon, V. (2016). Influence of water content on the mechanical behaviour of limestone: role of the clay minerals content. Rock Mechanics and Rock Engineering, 49 (6), 2033–2042. https://doi.org/10.1007/s00603....
3.
Ciantia, M.O., Castellanza, R., Crosta, G.B., & Hueckel, T. (2015). Effects of mineral suspension and dissolution on strength and compressibility of soft carbonate rocks. Engineering Geology, 184, 1–18. https://doi.org/10.1016/j.engg....
4.
Cripps, J.C. & Moon, C.F. (1990). The Engineering Geology of Weak Rock, Leeds University Press.
5.
Fairhurst, C.E. & Hudson, J.A. (1999). Draft ISRM suggested method for the complete stress-strain curve for intact rock in uniaxial compression. International Journal of Rock Mechanics and Mining Sciences, 36 (3), 279–289. https://doi.org/10.1016/S0148-....
6.
Fu, T.F., Xu, T., Heap, M.J., Meredith, P.G., Yang, T.H., Mitchell, T.M., & Nara, Y. (2021). Analysis of capillary water imbibition in sandstone via a combination of nuclear magnetic resonance imaging and numerical DEM modeling. Engineering Geology, 285, Article 106070. https://doi.org/10.1016/j.engg....
7.
Gao, L., Gao, F., Zhang, Z.Z., & Xing, Y. (2020). Research on the energy evolution characteristics and the failure intensity of rocks. International Journal of Mining Science and Technology, 30 (5), 705–713. https://doi.org/10.1016/j.ijms....
8.
Gong, F.Q., Zhang, P.L., Luo, S., Li, J.C., & Huang, D. (2021). Theoretical damage characterisation and damage evolution process of intact rocks based on linear energy dissipation law under uniaxial compression. International Journal of Rock Mechanics and Mining Sciences, 146, Article 104858. https://doi.org/10.1016/j.ijrm....
9.
He, M.M., Zhang, Z.Q., & Li, N. (2021). Experimental investigation and empirical model to determine the damping and shear stiffness properties of soft rock under multistage cyclic loading. Soil Dynamics and Earthquake Engineering, 147, Article 106818. https://doi.org/10.1016/j.soil....
10.
Huang, D. & Li, Y.R. (2014). Conversion of strain energy in Triaxial Unloading Tests on Marble. International Journal of Rock Mechanics & Mining Sciences, 66, 160–168. https://doi.org/10.1016/j.ijrm....
11.
Li, S.Q., Yang, Z.P., Gao, Y.H., Liu, H., Liu, X.R., & Jin, X.G. (2023). Wetting deformation characteristics of soil–rock mixture considering the water-disintegration of red stratum soft rock. Acta Geotechnica, 19(7), 4381–4397. https://doi.org/10.1007/s11440....
12.
Liu, C.D., Cheng, Y., Jiao, Y.Y., Zhang, G.H., Zhang, W.S., Ou, G.Z., & Tan, F. (2021). Experimental study on the effect of water on mechanical properties of swelling mudstone. Engineering Geology, 295, Article 106448. https://doi.org/10.1016/j.engg....
13.
Liu, H.D., Liu, J.J., Zhang, S.Y., Feng, L.Y., & Qiu, L. (2023a). Experimental study on compression characteristics of fractured soft rock and its Mohr-Coulomb criterion. Theoretical and Applied Fracture Mechanics, 125, 103820. https://doi.org/10.1016/j.tafm....
14.
Liu, X.C., Huang, F., Zheng, A.C., & Hu, X.T. (2024). Micro-dissolution mechanism and macromechanical behavior of red-bed soft rock under dry-wet cycle. Materials Letters, 362, Article 136220. https://doi.org/10.1016/j.matl....
15.
Liu, Y., Huang, D., Peng, J.B., & Guo, Y.Q. (2023b). Analysis of the effect of rock layer structure on the toppling failure evolution of soft-hard interbedded anti-dip slopes. Engineering Failure Analysis, 145, Article 107005. https://doi.org/10.1016/j.engf....
16.
Luo, P.K., Li, D.Y., Ma, J.Y., Zhou, A.H., & Zhang, C.X. (2023). Experimental investigation on mechanical properties and deformation mechanism of soft-hard interbedded rock-like material based on digital image correlation. Journal of Materials Research and Technology, 24, 1922–1938. https://doi.org/10.1016/j.jmrt....
17.
Meng, Q.B., Liu, J.F., Pu, H., Huang, B.X., Zhang, Z.Z., & Wu, J.Y. (2023). Effects of cyclic loading and unloading rates on the energy evolution of rocks with different lithology. Geomechanics for Energy and the Environment, 34, Article 100455. https://doi.org/10.1016/j.gete....
18.
Vásárhelyi, B. (2005). Statistical analysis of the influence of water content on the strength of the miocene limestone. Rock Mechanics and Rock Engineering, 38 (1), 69–76. https://doi.org/10.1007/s00603....
19.
Vásárhelyi, B. & Ván, P. (2006). Influence of water content on the strength of rock. Engineering Geology, 84 (1–2), 70–74. https://doi.org/10.1016/j.engg....
20.
Wasantha, P.L.P. & Ranjith, P.G. (2014). Water-weakening behavior of Hawkesbury sandstone in brittle regime. Engineering Geology, 178, 91–101. https://doi.org/10.1016/j.engg....
21.
Xi, Y., Wang, H.Y., Li, J., Jiang, H.L., & Fan, L.F. (2023). Transient process of mechanical response and energy conversion of rocks with different lithologies under impact loading. Geoenergy Science and Engineering, 228, Article 211978. https://doi.org/10.1016/j.geoe....
22.
Xie, H.P., Li, L.Y., Peng, R.D., & Ju, Y. (2009). Energy analysis and criteria for structural failure of rocks. Journal of Rock Mechanics and Geotechnical Engineering, 1 (1), 11–20. https://doi.org/10.3724/SP.J.1....
23.
Yu, H.T., Liu, Z.B., Zhang, Y., Luo, T.Y., Tang, Y.S., Zhang, Q.S., & Wang, Y.T. (2023). The disintegration mechanism analysis of soft rock due to water intrusion based on discrete element method. Computers & Geosciences, 171, Article 105289. https://doi.org/10.1016/j.cage....
24.
Zhang, G.D., Ling, S.X., Liao, Z.X., Xiao, C.J., & Wu, X.Y. (2024). Mechanism and influence on red-bed soft rock disintegration durability of particle roughness based on experiment and fractal theory. Construction and Building Materials, 419, Article 135504. https://doi.org/10.1016/j.conb....
Share
RELATED ARTICLE
| eISSN: | 2543-6309 |
| ISSN: | 1429-2955 |
We process personal data collected when visiting the website. The function of obtaining information about users and their behavior is carried out by voluntarily entered information in forms and saving cookies in end devices. Data, including cookies, are used to provide services, improve the user experience and to analyze the traffic in accordance with the Privacy policy. Data are also collected and processed by Google Analytics tool (more).
You can change cookies settings in your browser. Restricted use of cookies in the browser configuration may affect some functionalities of the website.
You can change cookies settings in your browser. Restricted use of cookies in the browser configuration may affect some functionalities of the website.
