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DOI:
地质力学学报:2014,20(2):132-139
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安宁河断裂带勒帕沟泥石流发育特征及防治建议
(1.中国地质大学(北京)工程技术学院, 北京 100083;2.中国地质科学院地质力学研究所, 北京 100081)
DEVELOPMENT CHARACTERISTICS AND PREVENTION SUGGESTIONS OF THE LEPA DEBRIS FLOW IN THE ANNING RIVER FAULT ZONE
(1.School of Engineering and Technology, China University of Geosciences, Beijing 100083, China;2.Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China)
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投稿时间:2013-12-11    
中文摘要: 2011年6月17日,勒帕沟发生近50年来最大的一次泥石流,经计算泥石流断面平均流速为2.03 m/s,峰值流量为200.11 m3/s,为大型泥石流,对帕勒村村民生命财产造成了巨大危害。勒帕沟上游岸坡前缘不稳定斜坡体及勒帕沟沟道内松散堆积的卵砾石为勒帕沟泥石流的主要物源。上游支沟中碎屑物块度较小,易被水流冲走,不会形成堰塞湖和溃决型泥石流。勒帕沟流域现今仍有再次暴发泥石流的可能,建议于流域中上游进行人工植树造林,在下游清理河道,进行监测预警,以实现泥石流综合防治。
Abstract:The paper gives careful calculations of the maximum debris flow in the Lepa gully in June 17th, 2011, the extraordinarily serious debris flow calamities in the last fifty years. By calculation, the mean velocity of the debris flow was 2.03 m/s with a peak discharge of 200.11 m3/s. The unstable slopes in the front edge of the upper Lepa gully's river bank together with those gravels overlapped on its riverbed proved to be the main solid substance source of the Lepa debris flow. The diameter of the clastics' particle in the upper branch was small, so they are prone to be swept away by floods in the gully rather than resulting in the formation of barrier lakes or extraordinarily serious debris flow calamities. Currently, Lepa gully still has possibility of debris flow's breakout, suggestions lie in planting trees in the upper and middle reaches of the gully, cleaning riverbed in the lower reaches, setting up monitoring and warning system, to prevent the debris flow.
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基金项目:科技基础性工作专项(2011FY110102);中国地质调查局项目(1212010914025);国家科技支撑计划课题(2011BAK12B09,2012BAK10B02)
引用文本:
张瑞端,郭长宝,张永双,等,2014.安宁河断裂带勒帕沟泥石流发育特征及防治建议[J].地质力学学报,20(2):132-139.DOI:
ZHANG Rui-duan,GUO Chang-bao,ZHANG Yong-shuang,et al,2014.DEVELOPMENT CHARACTERISTICS AND PREVENTION SUGGESTIONS OF THE LEPA DEBRIS FLOW IN THE ANNING RIVER FAULT ZONE[J].Journal of Geomechanics,20(2):132-139.DOI:

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