[1]游勇,陈兴长,柳金峰,等.汶川地震后四川安县甘沟堵溃泥石流及其对策[J].山地学报,2011,(03):320.
YOU Yong,CHEN Xingzhang,et al.Dambreaking Debris Flows and Its Countermeasures of Gangou Gully
Following the Wenchuan Earthquake in Anxian County, Sichuan[J].Mountain Research,2011,(03):320.
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汶川地震后四川安县甘沟堵溃泥石流及其对策(
)
《山地学报》[ISSN:1008-2186/CN:51-1516]
- 卷:
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- 期数:
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2011年03期
- 页码:
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320
- 栏目:
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山地学报
- 出版日期:
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2011-01-01
文章信息/Info
- Title:
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Dambreaking Debris Flows and Its Countermeasures of Gangou Gully
Following the Wenchuan Earthquake in Anxian County, Sichuan
- 作者:
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游勇;陈兴长;柳金峰;
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1．中国科学院山地灾害与地表过程重点实验室，四川 成都 610041；
2.中国科学院水利部成都山地灾害与环境研究所，四川 成都 610041；
3西南科技大学环境与资源学院，四川 绵阳 621010
- Author(s):
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YOU Yong; CHEN Xingzhang; LIU Jinfeng
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1. Key Laboratory of Mountain Hazards and Land Surface Process, Chinese Academy of Sciences, Chengdu 610041, China;
2 Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China;
3 School of Environment and Resources, Southwest University of Science and Technology, Mianyang 621010, China
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- 关键词:
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安县; 甘沟; 堵溃泥石流; 防治对策; 断面优化设计
- Keywords:
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Anxian County; Gangou Gully; dambreaking debris flow; countermeasures; optimum crosssection design
- 分类号:
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P64223
- 文献标志码:
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A
- 摘要:
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汶川地震诱发的大量崩塌和滑坡不仅直接为泥石流活动提供松散固体物质,还可能造成沟道堵塞。沟道内的堵塞坝虽然不像主河道上的堰塞湖那样造成大范围灾害,但溃决后却会引发大规模泥石流,给人民生命财产和基础设施等造成严重危害。以四川省安县高川乡甘沟为例,说明其造成泥石流的危害特征及防治对策。通过对甘沟自然环境背景条件的分析,发现甘沟具备泥石流暴发的地形地貌和降水条件;流域内地震诱发的崩滑体不仅为泥石流的形成提供丰富的松散固体物质,还造成沟道堵塞,形成堵溃型泥石流。甘沟已建的排导槽存在过流能力不够、槽底和侧墙已基本被破坏、弯道处未考虑超高、沟内未布置拦挡工程等问题。目前沟内由于松散固体物质充足,在一定的降水...
- Abstract:
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A large number of landslides, induced by the Wenchuan Earthquake, directly provide loose materials for subsequent debris flows, but also may cause channel blockage Channel blockage, as contrasted with river blockage, may not cause widespread damages, but it will transform into largescale debris flows and cause serious harm to people's lives and property and infrastructure In this paper, taking Gangou gully of Anxian County in Sichuan Province of China as example, we studied the debris flow characteristics and put forward the control debris flow measures Based on analysis of the natural environment conditions in the gully, we found that its topography was prone to form debris flows According to the remote sensing interpretation, there was a big landslide, approximately 045 million m3 in volume, induced by the earthquake, blocking the channel and forming a landslide dam It was the failure of the dam that formed largescale debris flows and caused serious damages to local people It was also found that the drainage canal had no enough flow capacity and the canal basement and side walls had been destroyed and the excessheight in bend of the drainage canal had not been taken into account Additionally, there was no debris dam and check dam in the gully Unfortunately, under the condition of rainfall, debris flows will occur again due to enough loose solid materials in the gully To solve these problems, the countermeasures of building check dams, heightening drainage canal, warning and forecasting were put forward in this paper Especially, we considered the optimal crosssection characteristics of debris flow drainage canal in the gully
备注/Memo
- 备注/Memo:
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收稿日期(Received date)：2010-08-30。
基金项目（Foundation item）：国家科技支撑计划课题(2009BAK56B05) 和国家自然科学
基金项目（40971014）资助。\[Jointly supported by the State Key Project of China(2009BAK56B05) and the Project of National Natural Science Foundation of China (40971014)\]
作者简介（Biography）：游勇（1964-），男，四川乐山人，研究员。主要从事山地灾害实验与防治工程研究。\[You Yong (1964- ), male, born in Sichuan, professor, majoring on the experiment and technology of mountain hazards mitigation\]
更新日期/Last Update:
1900-01-01