自然斜面崩壊予測技術の従来の課題と背景: 防災・減災を目指して

摘要

In order to prevent and mitigate casualties caused by slope failures during heavy rainfall, disaster forecasting is very important. However, it is impossible to do it by now because slope failures have various types, and their mechanisms are not yet clarified with rainfall data. Therefore, current forecasting methods are constructed under the specified failure types such as surface failure type and so on, for the time and the space, respectively. Thus, the forecasting results are obtained under many assumptions. Therefore, geotechnical engineers who are using them must understand these assumptions and have wide view points about geology, geomorphology, ground soil condition and local rainfall characteristics.%2011年は歴史に残る大災害が頻発した年であった。3月11日には，1900年以降世界で第4位にランクされるマグニチュード9.0の東北地方太平洋沖地震（東日本大震災）が発生した。