摘要
汶川地震给北川老县城造成了毁灭性的破坏。北川新县城选址与建设中地震地质灾害研究是其中一项重要内容。本文通过对汶川地震中北川老县城所遭受的地震地质灾害及北川新县城地质条件的分析,在地质考察、地质钻探、断层探测等基础上,对北川新县城地震地质灾害进行了研究,认为北川新县城不会发生断裂地表破裂、砂土液化等灾害;在新县城南部可能发生局部崩塌;新县城南东侧河流侵蚀堆积阶地局部可能发生轻微滑坡灾害。建议在规划和建设中对上述灾害引起注意,进行必要的防治。
The ruinous destruction of Beichuan county was caused by Wenchuan earthquake.The research of seismogeological disasters is one of the important contents in the location and construction.In this paper,the seismogeological disasters were analyzed to new Beichuan county town on the basis of the geological survey,geological drilling and fault detection.According to analyzing the seismogeological disasters caused by Wenchuan earthquake and the geological conditions in Beichuan county,the studies proved that it wouldn＇t have tectonic ground crack and sand-soil liquefaction site in the new town.In the south of the new town,local collapse and slight landslide could occur on the river terrace.The necessary measures to geologic calamity prevention and control should be taken during planning and construction.
出处
《防灾减灾学报》
2010年第4期6-12,共7页
Journal of Disaster Prevention And Reduction
基金
山东省人民政府援助四川省北川县项目
关键词
地震地质灾害
断裂地表破裂
崩塌
滑坡
seismogeological disasters
tectonic ground crack
collapse
landslide
