福建顺昌地震塌陷的初步研究  

Preli minary study of ground collapse induced by the earthquake in Shunchang,Fujian

作　　者：黄宗林[1] 陈伟[1] 连玉平[1] 陈为伟[1] 

机构地区：[1]福建省地震局,福州350003

出　　处：《福建地质》2010年第A01期87-91,共5页Geology of Fujian

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.

关 键 词：地面塌陷 成因机制 地震 福建顺昌 

分 类 号：P642.26[天文地球—工程地质学]