摘要
通过对甘肃中东部大量地震滑坡的成灾机制分析,按形成时代将滑坡分为新滑坡、老滑坡和古滑坡;按物质组成、滑体厚度及滑床位置又可分为浅层黄土滑坡和深层切层滑坡。该地区地震滑坡的主要危险来自新滑坡和浅层黄土滑坡,滑坡成灾机制复杂,与许多因素有关。地震滑坡主要特征是成灾时间短,规模大;灾害持续时间长、反复性大;易引发次生灾害。预防地震滑坡是防震减灾工作中的一项重要任务。
The mechanisms of earthquake landslip disasters in middle - eastern area in Gansu province are anatlyzed. The landslips are divided into new, old and ancient ones by periods, and divided into shallow layer loess and deep shearing ones by the material composition, depth and position of the sliding mass. The dangers of earthquake landslip are mainly caused by new and shallow layer loess landslide. The mechanisms of earthquake landslips are complex, whieh relate to many faetors, and their eharaeteristies are also analyzed in the paper. How to prevent secondary landslips eaused by earthquakes is our important work.
出处
《高原地震》
2007年第3期50-53,共4页
Plateau Earthquake Research
关键词
地晨滑坡
成灾机制
灾害特征
甘肃中东部
Earthquake landslip
Disaster mechanism
Disaster characteristic
Middleeastern area in Gansu province
