Thension crack is generated by the difference in shear movement along the failure surface or slip plane. It formed in the upper slope face before the major failure surface appeared. So, the total shear resistance and thus the safety factor will reduce after this tension crack developement. However, this tension crack will stop developing when it reaches a critical depth. And, a new tension crack will develope behind that previous crack.
The major internal cause of slope failure is gravity.
Saturation.
Slope Gradient
1. shear failure 2. rock flow 3. rock fall
A slope and the force of gravity.
A negative slope is a slope occurs whenever an increase in the x value of the equation of a line causes the y value to decrease. If you're looking at the graph, the line with slope downwards from left to right.
Slides that grow uphill by increments are called retrogressive; slides that grow downhill by increments are called progressive.
runoff is what causes erosion, because as the water runs down the slope it carries with it the particles of material that form the slope
The answer depends on what causes the difficulty: the steepness or the distance which you have to run.
a certain degree of slope and then some special weather conditions.
1. Gravity. 2. Volcanism. 3. Tectonics. 4. Hydraulics.
Gravity.