摘要
甘肃省是全国4大滑坡、泥石流分布区。境内滑坡、泥石流主要分布在西秦岭山地、黄土高原和祁连山地。根据历年灾害资料研究,降水引发的地质灾害占年度地质灾害的比例为45%-95%,且具有突发性、群发性和滞后性等特征,造成了严重的人员伤亡和经济损失。引发滑坡、泥石流主要有连阴雨、局地暴雨、前期降水-区域暴雨和区域性大暴雨。通过对降水与滑坡、泥石流关系研究,分类型建立了甘肃省滑坡24 h趋势气象预警模型和滑坡、泥石流实时降雨预警模型,并在2013年陇东南连续强降水过程中应用,取得了很好的预警效果。
Gansu province is one of four major landslides and debris flow distribution area of China. It distributes in Western-Qinling Mountain,the Loess Plateau and Qilian Mountain. According to disaster information research,the ratio of annual precipitation caused by geological disasters as 45%-95%. Geological disasters are abrupt mass and lag,causing serious casualties and economic losses. The main types of is continuous rains, antecedent precipitation-regional storm and heavy rainfall in the regional, triggered landslides and debris flow. Through research on the relationship between precipitation and landslides and debris flow,established landslide meteorological early-warning model and real-time rainfall model of landslides and debris flows in Gansu province. The model ＇s effect has been proved during continuous heavy rain in Southeast Gansu in 2013.
出处
《中国地质灾害与防治学报》
CSCD
2015年第1期127-133,共7页
The Chinese Journal of Geological Hazard and Control
基金
国家重点基础研究发展计划项目(2014CB744703)
科技部支撑计划项目(2011BAK12B06)
关键词
甘肃
地质灾害
气象预警
模型
应用
Gansu province
geological hazards
meteorological early warning
model
used
