| 安宁河断裂带勒帕沟泥石流发育特征及防治建议 |
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| 引用本文： | 张瑞端,郭长宝,张永双,付晓晓.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,2014,20(2):132-139. |
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| 作者姓名： | 张瑞端 郭长宝 张永双 付晓晓 |
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| 作者单位： | [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 |
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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） |
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| 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。
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| 关 键 词： | 安宁河断裂带 勒帕沟 泥石流 发育特征 |
| 收稿时间： | 2013/12/11 0:00:00 |
DEVELOPMENT CHARACTERISTICS AND PREVENTION SUGGESTIONS OF THE LEPA DEBRIS FLOW IN THE ANNING RIVER FAULT ZONE |
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| ZHANG Rui-duan,GUO Chang-bao,ZHANG Yong-shuang and FU Xiao-xiao.DEVELOPMENT CHARACTERISTICS AND PREVENTION SUGGESTIONS OF THE LEPA DEBRIS FLOW IN THE ANNING RIVER FAULT ZONE[J].Journal of Geomechanics,2014,20(2):132-139. |
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| Authors: | ZHANG Rui-duan GUO Chang-bao ZHANG Yong-shuang and FU Xiao-xiao |
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| Institution: | ZHANG Rui-duan, GUO Chang-bao, ZHANG Yong-shuang, FU Xiao-xiao (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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| Abstract: | The paper gives careful calculations of the maximum debris flow in the Lepa gully in June 17^th, 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 m^3/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 elastics＇ 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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| Keywords: | Anning River fault zone Lepa gully debris flow development |
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