福建顺昌地震塌陷的初步研究

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英文篇名：Preli minary study of ground collapse induced by the earthquake in Shunchang,Fujian 中文刊名：福建地质 英文刊名：Geology of Fujian 作者：黄宗林 ; 陈伟 ; 连玉平 ; 陈为伟 英文作者：Huang Zhonglin Chen Wei Lian Yuping Chen Weiwei (Earthquake ad ministration of Fujian province ; Fuzhou 350000) 中文关键词：地面塌陷 ; 成因机制 ; 地震 ; 福建顺昌 英文关键词：earthquake ; ground collapse ; genetic mechanism ; Shunchan 出版日期：2010-09-15 机构：福建省地震局; 年：2010 期：S1 出版单位：福建地质

摘要

福建顺昌2007年3月13日发生ML4.9级地震,数日后,震区元坑镇福峰村出现地面塌陷。通过现场勘察和访问,查明了震后地面塌陷形态特征和规模,了解到其附近曾发生过多起地面塌陷现象。在分析地面塌陷的分布特征和地貌地质条件基础上,研究震后地面塌陷的成因机制,认为震后地面塌陷是地震诱发岩溶塌陷引起的,数十年来出现的地面塌陷均属岩溶塌陷,岩溶塌陷受北东向断裂构造控制,呈北东向带状分布在盆地内或低洼缓坡地带,上覆较厚的第四纪覆盖层。
On March 13,2007,there were ML4.9 earthquake in Shunchang,Fujian.And several days later,ground collapses happened in Fufeng of earthquake region.Through field investigation and interview,we found out the morphological characteristics and scale of ground collapses,and learned that several ground collapses in vicinity.Based on the analysis of the distribution and geological conditions,we studied the genetic mechanis m of ground collapses and concluded that the karst collapse induced by earthquake caused these collapses. These collapses belonged to karst collapse,controlled by the ne-trending fault structure, located in the basin or gentle slope covered by the thick Quaternary overburden and showed zonal distribution.

引文

[1]福建省地震局地,2007年3月13日10时22分、23分顺昌ML4.9、4.7级地震灾害损失评估报告,2007。
    [2]福建省区域地质调查队,1:5万元坑幅地质图说明书,1990。
    1张梁,等.地质灾害灾情评估理论与实践.北京:地质出版社,1998.