昭和57年長崎豪雨における土石流災害に関する一考察

概要

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Many slope failures and debris flows occured in Nagasaki prefecture, Kyushu District, due to the localized heavy rainfall on July 23th, 1982. They caused a considerable disaster with loss of 299 human lives. This paper tries to investigate the debris flow disaster by some accomplished approachs for a contribution to the regional disaster planning. Main contributions are as follows. (1) gives a precipitation criterion of occurance of debris flow in Nagasaki city and its environs. (2) clarify the condition of sediment transport due to debris flow in a mountain stream for a case study. (3) examine the applicability of accomplished evaluetion method of risk of both occurence and arrival of debris flow.
長崎大学工学部,Faculty of Engineering, Nagasaki Universityの論文