甘肃中东部地震滑坡灾害的机制与预防

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英文篇名：THE MECHANISMS AND CHARACTERISTICS OF EARTH-QUAKE LANDSLIPS IN MIDDLE-EASTERN AREA IN GANSU PROVINCE 中文刊名：高原地震 英文刊名：Plateau Earthquake Research 作者：宋利萍 ; 沈克金 英文作者：SONG Li-ping ; SHEN Ke-jin(Lanzhou Institute of Seismology ; CEA ; Lanzhou 730000 ; China) 中文关键词：地震滑坡 ; 成灾机制 ; 灾害特征 ; 甘肃中东部 英文关键词：Earthquake landslip ; Disaster mechanism ; Disaster characteristic ; Middle-eastern area in Gansu province 出版日期：2007-09-15 机构：中国地震局兰州地震研究所,中国地震局兰州地震研究所 甘肃兰州730000,甘肃兰州730000 年：2007 期：03 出版单位：高原地震

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 analyzed.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,which relate to many factors,and their characteristics are also analyzed in the paper.How to prevent secondary landslips caused by earthquakes is our important work.

引文

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