[1]吕晶,高甲荣,胡封兵.北京双紧梢沟泥石流堆积物的特征及演变[J].水土保持研究,2010,17(01):140-143.
　LÜ,Jing,GAO Jia-rong,et al.Characteristics and Development of the Debris Flow Fan in Shuangjinshao Gully, Beijing[J].Research of Soil and Water Conservation,2010,17(01):140-143.
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北京双紧梢沟泥石流堆积物的特征及演变

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 17 期数: 2010年01期 页码: 140-143 栏目: 出版日期: 2010-02-20
Title:
Characteristics and Development of the Debris Flow Fan in Shuangjinshao Gully, Beijing
作者:
吕晶, 高甲荣, 胡封兵
北京林业大学水土保持学院, 水土保持重点实验室, 北京, 100083
Author(s):
LÜ Jing, GAO Jia-rong, HU Feng-bing
College of Soil and Water Conservation of Beijing Forestry University, Key Laboratory of Soil and Water Conservation and Desertification Combing of Ministry of Education, Beijing, 100083, China
关键词:
堆积物; 泥石流; 水石流; 北京山区
Keywords:
deposit fan; debris flow; water-stone flow; Beijing mountain
分类号:
P642.23
摘要:
北京山区具备泥石流形成与发生条件,泥石流灾害的发生较为频繁.在收集当地泥石流发生历史资料的基础上,详细调查了西白莲峪双紧梢沟的自然地理状况和泥石流堆积物的特点.采用野外量测和填图的方法调查双紧梢沟泥石流的地貌特征;现场选取一定数量的砾石进行abc长度和倾向调查,测定双紧梢沟泥石流堆积物的结构特征;选定泥石流典型区域,进行挖圆探坑,取出全部颗粒并带回实验室,进行粒度分析;同时,对双紧梢梢沟泥石流堆积扇的发育和演变过程进行分析.粒度分析结果表明双紧梢沟泥石流堆积物砾石平均粒径为0.256m,磨圆度为2～6.90%以上砾石直径为0.220～0.410m,最大砾石直径为0.409m,堆积物主要有砾石和一些粗骨性碎屑物质组成,砾石排列无明显特征,分选差.由粒度分析可知,该区泥石流堆积扇的形成受到水石流形成过程的影响,水石流形成堆积扇,之后可能发生粘性泥石流.由其频率曲线为一多峰曲线.该曲线说明泥石流发生时,其砾石的搬运方式由推移、跳跃、悬浮三大部分组成.双紧梢沟泥石流堆积扇的演变过程和特征明显受到双紧梢沟和西白莲峪主沟水流的影响.该研究结果对今后进一步探讨北京山区泥石流形成机理和运动过程以及为泥石流防治制定有效措施提供参考.
Abstract:
Debris flows occur frequently in the mountain area of Beijing.Through detailed data collection and field investigation,this article studied the characteristics of the debris deposition fan of Shuangjinshao gully.It shows that:the fan formation bears upon one debris-flow processes,the water-stone flow made the basic configuration of the fan,and the second viscous flow probably changed remarkably the morphology of the fan.Stacking manner is suspending,saltating and rolling.The evolution of the fan in Shuangjinshao gully is significantly influenced by the mainstreams of Shuangjinshao gully and Xibianlian ravine.The results will enrich theories on study of debris flow in Beijing Mountain and provide data to the mitigation of debris flow in Beijing Mountain.

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备注/Memo

收稿日期:2009-7-6。
基金项目:国家自然基金(40771128);国际合作项目(2009DFA32490)
作者简介:吕晶(1983- ),女,吉林白城人,硕士研究生,研究方向:山地灾害防治.E-mail:lvjing730@sohu.com
通讯作者:高甲荣(1963- ),男,副教授,主要从事流域管理和山地灾害防治研究.E-mail:jiaronggao@sohu.com

更新日期/Last Update: 1900-01-01