What question did this study set out to answer?

The aim is to understand how fluid injection influences fault slip and fracturing under true triaxial stress conditions.

An experimental investigation into fluid injection-induced fault slip and fracturing under true triaxial stress

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Experimental investigation reveals the impact of fluid injection on fault dynamics, indicating significant implications for rock stability.

The aim is to understand how fluid injection influences fault slip and fracturing under true triaxial stress conditions.
Fluid injection experiments conducted with monitoring of stress and displacement,
Acoustic emission analysis and spectral inversion applied to assess fault dynamics,
CT scanning used to visualize changes in rock structure during injection.
Three distinct stages of fault slip identified: injection disturbance, hydraulic fracturing, and pore pressure buildup.
Pore pressure increases lead to fluctuating slip velocities during fluid injection.
Reactivation of faults occurs before hydraulic fracturing in hard rocks, while the opposite holds true for soft rocks.

Wang et al. (2026) studied this question.

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Experimental investigation reveals the impact of fluid injection on fault dynamics, indicating significant implications for rock stability.