How does the geology (dip of rock layers or joints) on a slope affect slope stability? What will be an ideal response?
If the rocks underlying a slope dip in the same direction as the slope, water can percolate along the
various bedding planes and decrease the cohesiveness and friction between adjacent rock layers. If the
rocks dip in the same direction as the slope or are horizontal, but joints dip in the same direction as the
slope, water may migrate through the joints to weather the rock and expand the openings, causing
instability.
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