| 贡嘎山东坡雅家埂河特大型泥石流动力学特征 |
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| 引用本文： | 宋志,李宗亮,巴仁基,刘宇杰.贡嘎山东坡雅家埂河特大型泥石流动力学特征[J].西安地质学院学报,2010(4):416-419,435. |
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| 作者姓名： | 宋志 李宗亮 巴仁基 刘宇杰 |
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| 作者单位： | 中国地质调查局成都地质调查中心,四川成都610082 |
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| 基金项目： | 中国地质调查局项目（1212010814038） |
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| 摘 要： | 对2005年8月11日贡嘎山东坡雅家埂河特大型泥石流运动过程进行了描述,并采用现场实地勘查等手段,定量计算泥石流流速和流量等动力学特征,还运用得到的流量反演泥石流运动过程,从而得到雅家埂河特大型泥石流的形成机理。结果表明：雅家埂河特大型泥石流的形成与降雨有直接关系;雅家埂河支沟泥石流的群发性造成主河泥石流规模巨大;经对雅家埂河流域泥石流形成、发生的历史分析,推断出该流域泥石流存在18～21年的暴发周期;雅家埂河松散物源充足,降雨与水源丰富,地形地貌陡峭,极易再次发生规模较大的泥石流。
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| 关 键 词： | 泥石流 支沟 雅家埂河 实地勘查 动力学特征 贡嘎山 |
Kinetic Characteristics of Oversize Mud-rock Flow in Yajiageng River of Eastern Gongga Mountain |
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| Authors: | SONG Zhi LI Zong-liang BA Ren-ji LIU Yu-jie |
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| Institution: | (Chengdu Center of Geological Survey,China Geology Survey,Chengdu 610082,Sichuan,China) |
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| Abstract: | Motor process of oversize mud-rock flow in Yajiageng River of Eastern Gongga Mountain on August 11,2005 was described;kinetic characteristics of mud-rock flow were calculated quantificationally with the means of field survey,and was used to simulate the motor process of mud-rock flow in order to find the mechanism of oversize mud-rock flow in Yajiageng River.The results showed that formation of oversize mud-rock flow in Yajiageng River was directly related to the rainfall;mud-rock flow in tributary ditch of Yajiageng River meantime happened,and caused that the flow in the master river was huge;the eruptive period was 18-21 years according to the history of mud-rock flow in Yajiageng River;because loose material was plentiful,rainfall and water were rich and terrain was precipitous,oversize mud-rock flow in Yajiageng River could happen again. |
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| Keywords: | mud-rock flow tributary ditch Yajiageng River field survey kinetics characteristic Gongga Mountain |
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