[1]张志东,樊晓一*,姜元俊.岩土体颗粒级配对滑坡碎屑流冲击力力链特征的影响[J].山地学报,2020,(03):402-415.[doi:10.16089/j.cnki.1008-2786.000520]
 ZHANG Zhidong,FAN Xiaoyi*,JIANG Yuanjun.Effect of Granularity of Rock and Soil Mass on Regularity of Impact Force Chain in a Fluidized Landslide[J].Mountain Research,2020,(03):402-415.[doi:10.16089/j.cnki.1008-2786.000520]
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岩土体颗粒级配对滑坡碎屑流冲击力力链特征的影响()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2020年03期
页码:
402-415
栏目:
山地灾害
出版日期:
2020-05-30

文章信息/Info

Title:
Effect of Granularity of Rock and Soil Mass on Regularity of Impact Force Chain in a Fluidized Landslide
文章编号:
1008-2786-(2020)3-402-14
作者:
张志东1樊晓一1*姜元俊2
1. 西南科技大学 土木工程与建筑学院,四川 绵阳 621010; 2. 中国科学院、水利部 成都山地灾害与环境研究所,成都 610041
Author(s):
ZHANG Zhidong1FAN Xiaoyi1*JIANG Yuanjun2
1. School of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang 621010,Sichuan, China; 2. Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041,China
关键词:
冲击力力链 配位数 不均匀系数 颗粒级配 PFC2D
分类号:
P 642.22
DOI:
10.16089/j.cnki.1008-2786.000520
文献标志码:
A
摘要:
冲击力力链特征反映了碎屑流颗粒间的接触关系,为滑坡碎屑流冲击力特性的研究提供了一个新的理论方法。以物理模型实验数据为依据,借助离散元模拟软件PFC2D,探究不同岩土体颗粒级配条件下,力链配位数、超强力链、强力链、弱力链占比和强弱力链分布位置的相关特性。结果表明,碎屑流在运动过程中,力链配位数和强、超强力链占比会经历一个先波动减小再增加最后保持稳定的过程,并且力链配位数与颗粒的平均速度呈负相关关系; 岩土体颗粒级配中的不均匀系数Cu是影响力链配位数、超强力链、强力链、弱力链占比的主要因素; 在碎屑流冲击挡墙过程中,强、超强力链主要集中于底部区域,并且随着粗大颗粒含量的增加,超强力链配位数峰值的作用位置逐渐升高。

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备注/Memo

备注/Memo:
收稿日期(Received date): 2019-09-15; 改回日期(Accepted date): 2020-05-10
基金项目(Foundation item):国家自然科学基金项目(41877524); 工程材料与结构冲击振动四川省重点实验室开放基金项目(18kfjk10)[National Natural Science Foundation of China(41877524); The Opening Fund of Shock and Vibration of Engineering Materials and Structures Key Laboratory of Sichuan Province(18kfjk10)]
作者简介(Biography):张志东(1994-),男,硕士研究生,主要研究方向:地质灾害。[ZHANG Zhidong(1994-),male, M.Sc. candidate, research on geological disaster]E-mail: 591013567@qq.com
*通讯作者(Corresponding author):樊晓一(1974-),男,博士,教授,硕士生导师,主要研究方向:地质灾害评价预测与防治处理。[FAN Xiaoyi(1974-), male, Ph.D., professor, specialized in geological disaster evaluation, prevention and treatment]E-mail: xyfan1003@126.com
更新日期/Last Update: 2020-05-30