The influence of temperature and time on water-rock interactions based on the morphology of rock joint surfaces
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To study the influence of temperature and time on water-rock interactions, saturation experiments were conducted on ore rock and gneiss samples under different temperatures and soaking times. The rock joint surfaces of the soaked samples were scanned by a three-dimensional morphology measurement instrument. The mathematical statistical parameters, fractal parameters and power spectral densities of the rock joint morphology were obtained and investigated. As the immersion time increases, the parameters of the rock joint morphology increase, and the rates of increase are relatively stable, which indicate that time has a constant role in promoting water-rock interactions. Based on the constant influence of time, the effect of temperature on the water-rock interaction can be studied. As the saturation temperature increases, the rock joint morphology parameters increase, and the difference values of the joint morphology parameter increase first and then have a downward trend, reaching a maximum at 50 °C in the research. The results show that temperature alters the intensity of the water-rock interactions.
KeywordsWater-rock interaction Fractal parameters Joint surface morphology Temperature
The authors would like to acknowledge these financial supports: Project (2017zzts164) supported by the Fundamental Research Funds for the Central Universities, China; Projects (11772358) supported by the National Natural Science Foundation of China.
- Cao P, Fan X, Pu CZ et al (2011) Shear test of joint and analysis of morphology of joint surface. Chin J Rock Mech Eng 3(30):480–486 (in Chinese)Google Scholar
- Cao P, Ning GG et al (2013) Influence of water-rock interaction on morphological characteristic of rock joint surface at different temperatures. Journal of Central South University (Science and Technology) 44(4):1510–1516Google Scholar
- Deng HF, Yuan XF, Li JL et al (2013) Experimental research on influence of saturation degree on sandstone longitudinal wave velocity and strength. Chin J Rock Mech Eng 32(8):1625–1631 (in Chinese)Google Scholar
- Liu JS, Cao P, Liu J et al (2017) Effect of temperature-water coupled actions on joint morphology. Geotech Geol Eng. https://doi.org/10.1007/s10706-017-0263-3
- Qiao LP, Liu J, Feng XT (2007) Study on damage mechanism of sandstone under hydro-physico chemical effects. Chin J Rock Mech Eng 26(10):2117–2124Google Scholar
- Sun FT, She CX, Wan LT et al (2014) Peak shear strength criterion for rock joints based on three-dimensional morphology characteristics. Chinese Journal of Geotechnical Eng 36(3):529–536 (in Chinese)Google Scholar
- Zhang JJ (2005) Study on deep mining optimization of the mining technology. Mine Pressure and Ceiling Management 22(3):74–78Google Scholar
- Zhang H, Yang G (2011) Damage mechanical characteristics of rock under freeze–thaw and load coupling. Eng Mech 28(5):16–165 (in Chinese)Google Scholar