汶川M_S8.0地震彭州灾区典型震害与成因初步分析
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摘要
2008年5月12日14时28分汶川发生的8.0级大地震对我国四川省西部及西北部县市造成了特别严重,甚至是毁灭性破坏.基于现场调查资料,分析了彭州灾区的灾害空间分布,描述了典型建筑物破坏和大型滑坡体等地质灾害现象,并结合彭州地区房屋抗震设防情况,对此次地震灾害的主要成因进行了分析.结果表明,本次地震灾害的主要成因包括震级大、破坏力强,滑坡崩塌等地震地质灾害严重,农村建筑物缺乏必要的抗震设防措施等.在未来的规划与建设中,应避开断层、滑坡危险区域,并加强对农村地区建筑物的抗震设防指导.
A devastated MS8.0 earthquake struke Wenchuan county, Sichuan province on May 12, 2008, and razed many counties in western Sichuan pronvince. Based on the on-site work in Pengzhou city, especially in the Longmenshan community which was heavily damaged, typical phonomena of destroied buildings and secondery disaster, such as land slide, were described. What caused such a severe destruction?Our analysis shows that the huge power of the earthquake, the grave secondery geological disaster, and the low seismic resistence ability of the buildings are main factors responsible for so severe fatality. To avoid such kind of tragedy in the future, we need to think about the influence of fault and possible geological disaster in city planning and strengthen the guidance on house building in rural area.
A devastated MS8.0 earthquake struke Wenchuan county, Sichuan province on May 12, 2008, and razed many counties in western Sichuan pronvince. Based on the on-site work in Pengzhou city, especially in the Longmenshan community which was heavily damaged, typical phonomena of destroied buildings and secondery disaster, such as land slide, were described. What caused such a severe destruction?Our analysis shows that the huge power of the earthquake, the grave secondery geological disaster, and the low seismic resistence ability of the buildings are main factors responsible for so severe fatality. To avoid such kind of tragedy in the future, we need to think about the influence of fault and possible geological disaster in city planning and strengthen the guidance on house building in rural area.
引文
陈运泰,许力生,张勇,杜海林,冯万鹏,刘超,李春来,张红霞.2008.2008年5月12日汶川特大地震震源特性分析报告[R/OL].[2008-05-28]http:∥www.csi.ac.cn/sichuan/chenyuntai.pdf(in Chinese).
李传友,宋方敏,冉勇康.2004.龙门山断裂带北段晚第四纪活动性讨论[J].地震地质,26(2):248-258.
唐荣昌,文德华,黄祖智.1991.松潘—龙门山地区主要活动断裂带第四纪活动特征[J].中国地震,7(3):64-71.
肖富森,李政文,张华军.2005.龙门山构造带北段地震、地质综合解释[J].天然气工业,5(25):37-39.
余团,何昌荣.2000.龙门山构造带区域稳定性探讨[J].地震研究,23(4):378-383.
李传友,宋方敏,冉勇康.2004.龙门山断裂带北段晚第四纪活动性讨论[J].地震地质,26(2):248-258.
唐荣昌,文德华,黄祖智.1991.松潘—龙门山地区主要活动断裂带第四纪活动特征[J].中国地震,7(3):64-71.
肖富森,李政文,张华军.2005.龙门山构造带北段地震、地质综合解释[J].天然气工业,5(25):37-39.
余团,何昌荣.2000.龙门山构造带区域稳定性探讨[J].地震研究,23(4):378-383.
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