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汶川8.0级地震地表破裂带宽度调查
引用本文:周庆,徐锡伟,于贵华,陈献程,何宏林,尹功明.汶川8.0级地震地表破裂带宽度调查[J].地震地质,2008,30(3):778-788.
作者姓名:周庆  徐锡伟  于贵华  陈献程  何宏林  尹功明
作者单位:中国地震局地质研究所,北京,100029
基金项目:中国地震局汶川8.0级地震应急科学考察项目,国家科技支撑计划
摘    要:根据汶川8.0级地震地表破裂带的实地调查,龙门山断裂带的中央断裂与前山断裂地表破裂带宽度自北向南一般<40m。在Ⅹ—Ⅺ度极震区,沿断裂延伸方向破裂带之上及其两侧,各类房屋建筑无论何种结构均绝大部分倒塌损毁。考虑到逆断层作用引起的"地壳缩短"以及各种不确定性,并结合以往历史强震地表破裂带的宽度统计,提出汶川8.0级地震灾后重建时,极震区地震断层两侧的"避让带"宽度为25m。在"避让带"之内,只能建造高于抗震设防标准的2层以下的建筑物,应明确禁止兴建学校、医院等公共建筑

关 键 词:汶川地震  地震断层  地表破裂带  避让带宽度
收稿时间:2008-09-18

INVESTIGATION ON WIDTHS OF SURFACE RUPTURE ZONES OF THE M 8.0 WENCHUAN EARTHQUAKE,SICHUAN PROVINCE,CHINA
ZHOU Qing,XU Xi-wei,YU Gui-hua,CHEN Xian-cheng,HE Hong-lin,YIN Gong-ming.INVESTIGATION ON WIDTHS OF SURFACE RUPTURE ZONES OF THE M 8.0 WENCHUAN EARTHQUAKE,SICHUAN PROVINCE,CHINA[J].Seismology and Geology,2008,30(3):778-788.
Authors:ZHOU Qing  XU Xi-wei  YU Gui-hua  CHEN Xian-cheng  HE Hong-lin  YIN Gong-ming
Abstract:The 12 May 2008 Wenchuan Earthquake created about 240km-long surface fault ruptures along the Central Fault and about 72km along the Mountain Front Fault,two of the three sub-parallel secondary faults of Longmenshan thrust faults striking NE-SW,according to field investigation of surface faulting.From north to south,most of the widths of intense surface rupture zones are less than 40m,and above 1/2 are between 10~30m.Many buildings along fault surface ruptures were destroyed,including those with frame struc
Keywords:Wenchuan earthquake  earthquake fault  surface rupture zone  safety distance
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