摘要
根据红河州国土局提供的地质灾害易发性分区资料,将全州134个乡镇按地质灾害易发程度分为极易发区、易发区和轻易发区,全州约90%的地区为易发区和极易发区,仅北部的小面积地区为轻易发区;对红河州1984～2010年地质灾害资料分析发现,90%以上的地质灾害发生在5～10月,与降雨关系密切,强降雨及连阴雨均可能诱发地质灾害;对其中183条地质灾害样本进行分析,得出各分区临界雨量及地质灾害统计预报方程,将地质灾害等级预报细化到乡镇。
According to geological disasters susceptibility zonation information provided by Land Bureau of Hong- he prefecture, 134 township is divided into three areas： extremely prone area、 prone area and light prone are- a. About 90% regions is apt to occur geological disasters and the southern and western regions is more serious. By analyzing disaster cases from 1984 to 2010, it is found that 90% geological disasters occurred from May to Octo- ber, which is similar to the rainfall distribution, heavy rain and continuous rain can probably lead to geological disasters. The critical precipitation is determined and the statistic forecasting equation is built of every area by using of 183 samples, and the 5 grades potential forecasting of geological hazards is refined to the township.
出处
《云南地理环境研究》
2012年第3期37-42,共6页
Yunnan Geographic Environment Research
基金
云南省气象局预报员专项项目资助(YB201114)
关键词
地质灾害易发性分区
临界雨量
统计预报方程
云南省红河州
regionalization based on geological hazards
critical precipitation
statistical forecasting equations
Honghe Prefecture in Yunnan Province
