Many mass movements and slope failures result from abnormally high pore-water pressures.

Question

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Abnormally high pore-water pressures can reduce the stability of soil and rock materials, leading to mass movements and slope failures. This can happen due to excessive rainfall, rapid snowmelt, or other factors that increase the amount of water in the soil or rock. As the pore-water pressure increases, it can reduce the effective stress within the material and weaken its shear strength, eventually causing it to fail and move downslope.

Many Mass Movements and Slope Failures Result from Abnormally High