Mechanical Characteristics of Granite After Heating and Water-Cooling Cycles

Excerpt

With the increased development of geothermal resources and nuclear waste storage technologies, studies of high-temperature rock mechanic characteristics have become a hot research topic (Stesky 1978; Tapponnier and Brace 1976; Wai et al. 1982; Simpson 1985; Kou 1987; Homand-Etienne and Houpert 1989; Somerton and Boozer 2010; Smithies et al. 2011; Just and Kontny 2012; Singh et al. 2015; Zhao et al. 2017). Many researchers have examined the mechanical properties of rock after exposure to high temperatures, including deformation processes, failure criteria of rocks under pressure, and thermal cracking. They have also provided constitutive equations and carried out rock-damage characterization in response (Brede 1993; Hueckel et al. 1994; Araújo et al. 1997; Emirov and Ramazanova 2007; Sun et al. 2015; Hartlieb et al. 2016; Su et al. 2016; Ding et al. 2016; Xu and Zhang 2018). A study on the mechanical characteristics of high-temperature rocks after cooling is at the center of scientific research interests. The effects of different cooling rates and methods on mechanical parameters, strength cracking, and failure modes of high-temperature rocks are critical knowledge (Wang et al. 1988; Kim et al. 2014; Shao et al. 2014; Kumari et al. 2017; Isaka et al. 2018; Xu and Sun 2018). …