期刊文献+

蒋家沟泥石流堵江成因与特征 被引量:19

Characteristics and Origing of Debris Flow of Jiangjiagou Valiey Blocking
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摘要 小江流域是我国乃至世界暴雨泥石流最发育的地区,其中的蒋家沟又是小江流域活动最强烈的泥石流沟。2001年7月8日蒋家沟暴发了大规模的泥石流,泥石流进入小江后淤积成坝,导致小江堵塞,并造成一定灾害。近期的地震活动、前期大量降水和当日长历时连续降雨是该次泥石流形成的主要原因。原导流堤溃决后形成蒋家沟泥石流运动方向与小江水流方向垂直,高粗大颗粒含量、高容重和大流量的有机组合是泥石流停淤成坝堵塞小江的主要因素。 Xiaojiang river, a branch of Jinsha river, is an area with most developed debris flow valleys in China and even in the world, and the debris flow of Jiangjiagou valley is most active in Xiaojiang basin. A large scale debris flow continuing 15 hours occurred in Jiangjiagou valley. An amount of sediment transported by the debris flow deposited in the stream outlet and jammed the stream of Xiaojiang river then made some disasters. The main origins of the debris flow event were recent earthquake activity, a great deal of antecedent rainfall and long time continuous intraday rainfall. It is the main reason that the included angle between the steams of Jiangjiagou valley and Xiaojiang river was changed to 90° due to the old diversion dike break, and that the high content of coarse granule, high volume weight and large discharge of debris flow appeared in synchronously. Rebuilding the diversion dike to change the include angle, returning land for farming to forestry to recover the environment then change the condition of debris flow initiation are effective measures for preventing Xiaojiang river stream jammed by debris flow of Jiangjiagou valley.
出处 《水土保持学报》 CSCD 北大核心 2002年第6期71-75,共5页 Journal of Soil and Water Conservation
基金 国家自然科学基金资助(项目编号:49831010)
关键词 蒋家沟 泥石流 堵江 Jiangjiagou valley debris flow stream jam
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参考文献3

  • 1[3]中国科学院东川泥石流观测研究站. 云南蒋家沟泥石流运动观测资料集[M]. 北京:科学出版社,1997.
  • 2[5]O'Bnen J S,Julien P Y.Physical properties and mechanics of hyperconcentrated sediment flows[M].Proc., ASCE Specialty Conf. On the Delineation of Landslides, Flash Floods and Debris Flow Hazards in Utah, Utah Water Research Lab., Univ. of Utah at Logan, Utah,1985. 260-279.
  • 3费祥俊,康志成,王裕宜.细颗粒浆体、泥石流浆体对泥石流运动的作用[J].山地研究,1991,9(3):143-152. 被引量:30

二级参考文献2

  • 1吴积善,云南蒋家沟泥石流观测研究,1990年
  • 2杜榕桓,云南小江泥石流综合考察与防治规划研究,1987年

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引证文献19

二级引证文献218

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