3:50 PM - 4:05 PM
[O03-02] Can you protect yourself from slope disaster only by a text learning at school?
★Invited Papers
Keywords:slope disaster, landslide, intermediate mountain area, dissaster of multi-causative factors, social matters
Slope disasters are caused by landslide phenomena devasting human lives and social capitals with high destructive power.
Landslide is an all-inclusive term of mass movement of slope materials and are classified and defined as sector collapse, cliff collapse, slope failures (shallow landslide), deep seated landslide, rock slide and debris flow, based on movement velocity and characteristics of material and motion. Slope disasters are controlled by slope inclination and rock / soil properties composing mountain slope as mechanical factors and precipitation, ground water pressure and earthquake tremor as external factors, respectively. So to speak, slope disasters are multi-causative phenomena, so slope disasters are sometimes included in meteorological disasters or earthquake disasters. This is the reason why slope disasters are usually not covered in text book of Geography or Geosciences.
Landslides is defined as the downward movement of the moving layer of rock masses against the lower immobile layer. It depends on whether it exceeds the degree of roughness of slip surface (frictional force) and degree of bonding (cohesive force). If an external force is adjoined that weakens the friction and cohesion, slope disasters become more likely to occur. Naturally, the risk is higher in places with steep slopes. Even in urban areas, there are countless disasters in which people are involved by detritus caused by the collapse of retaining walls. In other words, it may be that slope disasters are difficult to be covered in detail in textbooks because they are too familiar but are due to multi-causative factors. In addition, slope disasters often occur in mountain areas, making it difficult for people living in urban areas to realize them on a daily basis. However, in the intermediate mountain areas where people live, slope disasters are extremely familiar and serious disasters, and we are reminded once again when torrential rains and direct earthquakes wash away the foundations of life in mountain areas and disrupt road networks. Looking overseas, we see that urban areas in developing countries are often expanding into the surrounding mountain slopes in a disorderly manner, ignoring the risk of landslides. They show that landslides must be covered by geography in social studies.
Landslide is an all-inclusive term of mass movement of slope materials and are classified and defined as sector collapse, cliff collapse, slope failures (shallow landslide), deep seated landslide, rock slide and debris flow, based on movement velocity and characteristics of material and motion. Slope disasters are controlled by slope inclination and rock / soil properties composing mountain slope as mechanical factors and precipitation, ground water pressure and earthquake tremor as external factors, respectively. So to speak, slope disasters are multi-causative phenomena, so slope disasters are sometimes included in meteorological disasters or earthquake disasters. This is the reason why slope disasters are usually not covered in text book of Geography or Geosciences.
Landslides is defined as the downward movement of the moving layer of rock masses against the lower immobile layer. It depends on whether it exceeds the degree of roughness of slip surface (frictional force) and degree of bonding (cohesive force). If an external force is adjoined that weakens the friction and cohesion, slope disasters become more likely to occur. Naturally, the risk is higher in places with steep slopes. Even in urban areas, there are countless disasters in which people are involved by detritus caused by the collapse of retaining walls. In other words, it may be that slope disasters are difficult to be covered in detail in textbooks because they are too familiar but are due to multi-causative factors. In addition, slope disasters often occur in mountain areas, making it difficult for people living in urban areas to realize them on a daily basis. However, in the intermediate mountain areas where people live, slope disasters are extremely familiar and serious disasters, and we are reminded once again when torrential rains and direct earthquakes wash away the foundations of life in mountain areas and disrupt road networks. Looking overseas, we see that urban areas in developing countries are often expanding into the surrounding mountain slopes in a disorderly manner, ignoring the risk of landslides. They show that landslides must be covered by geography in social studies.