西藏樟木沟泥石流成因分析及综合评判
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国家自然科学基金项目"藏东南溜砂的形成及运动机理研究"(40971015),"西藏扎墨公路不同山地垂直地带的泥石流形成机理和成灾规律"(41371038);中交股份科技研发项目(2011-ZJKJ-04);交通运输部科技项目(201231879210)


Cause Analysis and Comprehensive Evaluation of Debris Flow in Zhangmu Gully in Tibet
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    摘要:

    樟木沟泥石流对西藏地区唯一的国家一类陆路通商口岸——樟木口岸具有较大威胁,为合理制定泥石流防治方案,在研究樟木沟泥石流形成条件和动力学特性的基础上,分别采用数量化综合评判方法和模糊数学综合评判方法对该泥石流沟的易发程度进行了评价。综合评判结果显示,樟木沟为一条轻度易发泥石流沟,但有偏向中度易发泥石流的倾向。此外,对沟道断面清水流量的监测结果表明,樟木沟内常年流水是樟木镇松散层内地下水的主要补给源,对樟木滑坡群稳定性有不利影响。

    Abstract:

    The debris flow in Zhangmu gully is a great threat to Zhangmu treaty port, which is the only national level 1 treaty port in Tibet. In order to design a program to prevent debris flow, the study analyzed the forming conditions and dynamic characteristics of the debris flow gully, then evaluated the possibility of the occurrence of debris flow through quantitative and comprehensive method and fuzzy mathematic comprehensive evaluation method respectively. The result showed that Zhangmu gully is prone to has slight debris flow, but also has a possibility of moderate debris flow. In addition, monitoring results of the water flow showed that the running water in Zhangmu gully is the mainly supply source of groundwater in loose layer under Zhangmu town. This may has negative effect on the stability of Zhangmu landslide group.

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刘大翔,黄金辉,赵鑫,张小刚,程尊兰,刘建康.西藏樟木沟泥石流成因分析及综合评判[J].水土保持通报,2014,(2):100-104,110

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  • 收稿日期:2013-05-22
  • 最后修改日期:2013-07-21
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  • 在线发布日期: 2016-03-29
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