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储浩,孙树林,张磊,丁伟.均质黏土滑坡的运动特性研究[J].河北工程大学自然版,2017,34(2):70-73
均质黏土滑坡的运动特性研究
Study on the motion characteristic of clay landslide
投稿时间:2017-04-10  
DOI:10.3969/j.issn.1673-9469.2017.02.014
中文关键词:  滑坡  均质黏土滑坡  圆弧滑动  能量守恒
英文关键词:landslide  homogeneous clay landslide  sliding along circular surface  energy conservation
基金项目:国家重点实验室开放研究基金资助项目(2005408911);留学回国人员科研基金资助项目(20071108);江苏省环境保护厅项目(201029)
作者单位
储浩 河海大学 地球科学与工程学院, 江苏 南京 211100 
孙树林 河海大学 地球科学与工程学院, 江苏 南京 211100;河海大学 水文水资源与水利工程科学国家重点实验室, 江苏 南京 210098 
张磊 河海大学 地球科学与工程学院, 江苏 南京 211100 
丁伟 河海大学 地球科学与工程学院, 江苏 南京 211100 
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中文摘要:
      为研究均质黏土滑坡的运动特性,根据黏土滑坡特性定义圆弧形滑动面为最危险滑移面,基于质心法的运动假设,建立失稳后滑坡的物理运动模型,依据滑坡运动过程中功能转换关系,推导出滑坡滑动距离的预测公式,通过计算获取其运动加速度、速度、滑动距离等动力学参数,并将该方法计算得到的结果与雪橇模型结果对比。结果表明:均质黏土滑坡运动加速度在极短的时间内达到最大,而后逐渐降低;滑坡的运动速度在最初阶段增加较快,此后逐渐减小直至滑坡停止;该方法得到的最终水平滑动距离与雪橇模型计算结果基本一致,相对误差较小,仅为1.2%。
英文摘要:
      In order to analyze the motion characteristic of clay landslide, the circular sliding surface is defined as the most dangerous slip plane according to clay landslide characteristic. Base on the assumption that landslide moves as a group of particles motion, the physical motion model of landslide failure is established. Base on function transformation relations, in the process of landslide movement the forecast formula of landslide distance is deduced. Kinetic parameters such as motion acceleration velocity, sliding distance are obtained by calculation. Compared with the sled model, this method can be used for landslide case. The case results show that the motion acceleration of homogeneous clay landslide approaches to its maximum immediately in a very short time, and then reduces gradually. Landslide movement speed increases rapidly in the initial stage, then slows down gradually until the landslide movement stops. The final horizontal sliding distance of this method is equal to the result calculated by the sled model approximately, and the relative error is only 1.2%, which is very small.
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