| 大渡河长河坝水电站区域泥石流特征及危险性评价 |
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| 引用本文： | 沈远,邓荣贵,张丹.大渡河长河坝水电站区域泥石流特征及危险性评价[J].防灾减灾工程学报,2012,32(3):359-364. |
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| 作者姓名： | 沈远 邓荣贵 张丹 |
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| 作者单位： | 1. 西南交通大学土木工程学院,成都,610031
2. 四川省安全科学技术研究院,成都,610016 |
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| 摘 要： | 2009年7月23日,四川省甘孜州康定县舍联乡长河坝水电站施工区响水沟发生特大泥石流灾害,造成重大人员伤亡和财产损失。响水沟是大渡河上游段右岸一级支沟,近百年来泥石流活动不明显。由于之前近一个月的连续降雨,沟谷内的不稳定堆积物已基本处于饱水状态,当日的强降雨直接诱发了此次泥石流灾害。本文根据现场调查资料,就该沟泥石流的形成条件、灾害成因及特征进行分析,并应用灰色系统理论关联分析方法和沟谷泥石流危险度计算分析综合评价其危险性。结果表明,在极端气象条件下,响水沟仍有可能发生中等至大规模暴雨型粘性泥石流。
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| 关 键 词： | 长河坝水电站 泥石流特征 危险性评价 大渡河 |
Debris Flow Characteristics and Hazard Assessment of the Area of Dadu River Changheba Hydropower Station |
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| SHEN Yuan
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DENG Rong-gui
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ZHANG Dan.Debris Flow Characteristics and Hazard Assessment of the Area of Dadu River Changheba Hydropower Station[J].Journal of Disaster Prevent and Mitigation Eng,2012,32(3):359-364. |
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| Authors: | SHEN Yuan DENG Rong-gui ZHANG Dan |
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| Affiliation: | 1.Civil Engineering College,Southwest Jiaotong University,Chengdu 610031,China;2.Sichuan Province Safety Science and Technology Research Institute,Chengdu 610016,China) |
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| Abstract: | The debris flow occurred on July 23,2009 at Xiangshui Gully of Kangding County in Sichuan province,caused 16 death,38 missing and serious loss of property.Xiangshui Gully is a right branch of the upper Dadu River,and the activities of historical debris flows are not clear in the last 100 years.Because of nearly a month continuous rain before,the sediments in the gully have been almost completely saturated in water,and the debris flow was triggered by a rainstorm on that day.This paper analyzes the formation conditions,disaster causes and characteristics of Xiangshui Gully based on the field investigation data and assesses its hazard comprehensively by application of grey correlation analysis combing with site-specific debris flow hazard quantitative assessment.The results show that it is still probable to break out middle and large scale viscous debris flow at Xiangshui Gully in the extreme weather. |
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| Keywords: | changheba hydropower station debris flow characteristic hazard assessment Dadu River |
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