Soil erosion is a geological event that occurred since the fall of the movement of the ground like a big lump of rock or soil. Although the main cause of this incident is that the gravitational influence of a steep slope
In principle landslides occur when driving on slopes force greater than the drag force. Style retaining force is generally influenced by the density of rocks and soil. While driving style is influenced by the size of the slope angle, water, load and soil density rocks. The threat of landslides usually occur in November, due to the increased intensity of rainfall. The long dry season causes the evaporation of water in the soil surface in large numbers, resulting in the appearance of pores or cavities in the soil, which resulted in cracks and surface cracks. At the time it rained, water would infiltrate into the ground so fast cracking the soil will expand again. At the beginning of the rainy season and high rainfall intensity usually frequent the water content in soil becomes saturated in a short time. Heavy rains that fell in the early season may cause landslides, because by breaking ground water will enter and accumulate in the bottom of the slope, resulting in lateral movement. With the vegetation on the surface will prevent the occurrence of landslides, because the water will be absorbed by plants and plant roots will also serve to tie the ground.
The impact of landslides, among others claimed many victims, many buildings damaged, leaving the people who lost their homes can not live properly. Other than that they need government assistance to restore their lives as before.
