Figure 1 | Scientific Reports

Figure 1

From: Study of the electromechanical coupling process before the 2020 Ms 6.4 Yutian, China earthquake

Figure 1

Schematic diagram of the rock constitutive relationship. P and R represent, respectively, the load and response. At the point P1 in stage I, the response (ΔR) to the small changes of ΔP in the loading and unloading are almost the same. At the stage II (e.g. point P2), the response to loading is significantly greater than unloading, and the stage III is characterized with macroscopic damage.

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