Research Article

Failure Behavior of Hot-Dry-Rock (HDR) in Enhanced Geothermal Systems: Macro to Micro Scale Effects

Figure 7

CT images of meso-structure during thermal cracking of Luhui granite specimen (modified from Zhao et al. [16]) (a); Variation in the quantity of micro-crack of Luhui granite (modified from Feng et al. [7]) (b).
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(b)