1733年东川Ms7.8地震山地灾害研究  

Seismic mountainous geo-hazard investigation of Dongchuan Ms7.8 earthquake in 1733

作　　者：王运生[1] 张欣[1] 张金达 杨栓成 韩立明[1] 严松[1] WANG Yunsheng;ZHANG Xin;ZHANG Jinda;YANG Shuancheng;HAN Liming;YAN Song

机构地区：[1]成都理工大学地质灾害防治与地质环境保护国家重点实验室,成都610059

出　　处：《南水北调与水利科技》2017年第1期138-144,共7页South-to-North Water Transfers and Water Science & Technology

基　　金：国家自然科学基金(41521002;41072231);中国地质调查局地质调查项目(1212011220154);地质灾害防治与地质环境保护国家重点实验室自主课题基金资助(SKLGP2015Z001)~~

摘　　要：1733年云南东川发生里氏7.8级地震,震害被崔乃镛几乎完整地记录了下来,对山地区走滑发震断裂触发的震害研究具有很高的研究价值。基于史料及现场调研,对次生山地灾害进行了复核,并获得如下基本认识:(1)地震次生山地灾害尤其是滑坡沿发震断裂呈窄条带状分布;(2)弱支护采铜矿洞坍塌严重;(3)滑坡失稳既有抛射现象也有慢速滑动现象,取决滑坡边界条件或失稳时间;(4)斜坡岩土体地震过程中震裂、松动是该区泥石流高频的主要原因之一。Dongchuan Ms7.8earthquake happened on August 2nd,1733,and the seismic hazards were completely recorded by Cui Naiyong,a local executive officer,in which the data are valuable to the study of secondary mountainous seismic hazards triggered by strike-slip seismic fault.The present paper investigated the secondary seismic hazards in the field based on the guide of the historical materials,the main conclusions were as follows:(1)the secondary mountainous seismic hazards were limited in a narrow zone along the seismic fracture;(2)weak support underground mines of copper were destroyed or seriously damaged,and the wooden building was good in seismic resistance;(3)the landslide failure showed in two different styles:projecting or slowly sliding,depending on the boundary conditions of the landslides or the failure time;(4)slope seismic shattering and loosening was one of the main reasons for the high-frequency debris flow.

关 键 词：1733东川大地震 震害特征 地震山地灾害 建筑物损毁 

分 类 号：P65[天文地球—地质学]