Factors That Affect or Alter a Slope’s Stability
(1) The absence or loss of tree roots and other forms of vertical vegetations. Human activities, like logging or farming are largely responsible for the deforestation or denudation of the slope.
(2) Wildfire incidents can lead to loss of soil nutrients and changes in the soil structure, which subsequently causes the roots to rot and weaken the structure of surface soil.
(3) Rivers and coastal areas where the soil tends to erode as the land is continuously battered by sea waves or water movements.
(4) Ground tremors of an earthquake that bring about stressful conditions to the soil, which can rob the soil of its stiffness and lead to the deterioration of its composition.
(5) Snowmelts, thawing glaciers and heavy rains tend to saturate and add stress to the soil.
(6) The hot, molten lava discharged during volcanic eruptions that destroys the root system, in addition to altering the soil nutrients and the soil structure.
(7) Other human activities that create ground-shaking movements similar to an earthquake such as:
- continuous vibrations emanating from vehicular traffic
- vibrating machinery or equipment used in construction, mining or oil explorations
- blasting devices used for road construction or mining sites