上海交通大学学报

上海交通大学学报（自然版） ›› 2012, Vol. 46 ›› Issue (10): 1665-1670.

• 天文学、地球科学 • 上一篇    下一篇

汶川地震触发牛圈沟高速远程滑坡-碎屑流动力学特性分析

张远娇1,邢爱国1,朱继良2   

  1. (1.上海交通大学 土木工程系，上海 200240； 2.中国地质调查局 水文地质环境地质调查中心，河北 071051）
  • 收稿日期:2012-03-16 出版日期:2012-10-30 发布日期:2012-10-30
  • 基金资助:

    基金项目：国家科技支撑项目（2006BAC04B02），国家自然科学基金项目（40602035,41272382），国土资源大调查计划项目（1212011014032），上海市重点学科建设项目（B208）资助

Dynamics Analysis of Niujuangou Rockslide-Debris Avalanche Triggered by the Wenchuan Earthquake

 ZHANG  Yuan-Jiao-1, XING  Ai-Guo-1, ZHU  Ji-Liang-2   

  1. (1. Department of Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China； 2. Center for Hydrogeology and
    Environmental Geology Survey, China Geological Survey, Hebei 071051, China)
  • Received:2012-03-16 Online:2012-10-30 Published:2012-10-30

摘要： 鉴于牛圈沟滑坡为地震触发的典型滑动-碎屑流型滑坡，采用滑坡动力学分析(Dynamic analysis)软件DANW对牛圈沟滑坡全程动力学特征进行分析，使用试错法对比分析摩擦准则与Voellmy准则两种不同流变关系的模拟效果.结果表明：摩擦准则应用于滑体的初始运动阶段，Voellmy准则应用于滑坡后期碎屑流阶段时模拟效果最佳；并给出最佳的流变参数，得到滑坡堆积体的体积和形态变化，滑坡运动速度及变化规律.    

关键词: 牛圈沟滑坡碎屑流, 数值模拟, 动力学分析

Abstract: Niujuangou rockslide-debris avalanche is known as a typical rockslide-debris avalanche, which was triggered by the Wenchuan earthquake. Superposed earthquake effects came from horizontal and vertical directions made initial rock mass throw out and move rapidly, after experiencing several strikes, rock mass almost fragment, and sliding mass move like debris avalanche in Niujuangou creek. A dynamic model DAN was used to back analysis of this event. Both Friction rule and Voellmy rule were modeled and compared. The results show that it would be best to adopt Friction rule in the proximal path and Veollmy rule in the distal path. And most suitable parameters, volume and profile of deposition, velocity of sliding mass were obtained.

Key words: Niujuangou rockslide-debris avalanche, numerical simulation, dynamic analysis

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