✔ 最佳答案
山泥傾瀉 = landslide
A landslide is a geological phenomenon which includes a wide range of ground movement, such as rock falls, deep failure of slopes and shallow debris flows. Although gravity acting on an over steepened slope is the primary reason for a landslide, there are other contributing factors affecting the original slope stability:
-erosion by rivers, glaciers, or ocean waves create oversteepened slopes
-rock and soil slopes are weakened through saturation by snowmelt or heavy rains
-earthquakes create stresses that make weak slopes fail (see liquefaction, Hope Slide)
-volcanic eruptions produce loose ash deposits, heavy rain, and debris flows.
-vibrations from machinery, traffic, blasting and even thunder may trigger failure of weak slopes
-excess weight from accumulation of rain or snow, stockpiling of rock or ore, from waste piles, or from man-made structures may stress weak slopes to failure and other structures
-groundwater pressure acting to destabilise the slope in shallow soils, the removal of deep-rooted vegetation that binds the colluvium to bedrock.