From Trak.in News:
To evaluate the possible effect of the Zipingpu Reservoir on the Wenchuan earthquake, Shemin Ge from the University of Colorado and his team constructed a two-dimensional model to study how the reservoir changed the stresses on the nearby faults. The researchers considered changes in static stress due to weight of the water and changes in pore pressure in the rocks beneath the reservoir due to fluid diffusion. They estimated that the Zipingpu reservoir increased stress on the nearby faults by enough to have speeded up their rupture by tens to hundreds of years. The researchers pointed out that resolving the question of whether the Zipingpu Reservoir contributed to the Wenchuan earthquake is important for understanding reservoir and earthquake hazards, especially in regions where dams are being rapidly built near faults.