[1]游勇,柳金峰,陈兴长,等.“5·12”汶川地震后北川苏保河流域泥石流危害及特征[J].山地学报,2010,(03):358.
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“5·12”汶川地震后北川苏保河流域泥石流危害及特征()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2010年03期
页码:
358
栏目:
山地学报
出版日期:
2010-05-15

文章信息/Info

作者:
游勇;柳金峰;陈兴长;
中国科学院地表过程与山地灾害重点实验室;中国科学院水利部成都山地灾害与环境研究所;
关键词:
汶川地震; 苏保河流域; 泥石流; 危害特征
文献标志码:
A
摘要:
汶川8级地震直接引发了大量的崩塌、滑坡等次生山地灾害,为泥石流提供了丰富的物质来源,灾后遇高强度降水,已引发大规模的次生泥石流灾害,严重威胁灾民安置点和灾后重建场址。以北川苏保河流域为例,分析了泥石流形成的地形地貌条件、松散固体物质条件和降水条件,总结了苏保河流域泥石流的危害和特征,在此基础上,通过形态调查法和雨洪法对泥石流流量的计算进行了对比分析。结果表明:地震后苏保河流域演变为泥石流多发区域,泥石流将会危害人民生命财产安全、灾后抢险救灾公路和人类生存环境;苏保河流域泥石流具有呈群发性,危害范围大、密度高,搬运能力强、激发泥石流的雨量相对偏小、多灾种复合性的特征;地震后,由于强震引发松散固体...

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更新日期/Last Update: 2010-05-15