长江科学院院报 ›› 2016, Vol. 33 ›› Issue (8): 91-95.DOI: 10.11988/ckyyb.20150632

• 岩土工程 • 上一篇    下一篇

不同粒径及级配对碎石料休止角影响的试验研究

孙开畅1,刘林锋1,明华军1,徐小峰1,李权1,仝佳欣2   

  1. 1. 三峡大学 水利与环境学院,湖北 宜昌 443002;
    2.中国葛洲坝集团 基础工程有限公司,湖北 宜昌 443002
  • 收稿日期:2015-08-05 修回日期:2015-09-18 出版日期:2016-07-25 发布日期:2016-07-25
  • 通讯作者: 刘林锋(1991-),男,河南许昌人,硕士研究生,研究方向为围堰边坡稳定性分析,(电话)13872583553(电子信箱)liulinfeng0408@126.com。
  • 作者简介:孙开畅(1970-),女,吉林梨树人,教授,硕士,主要从事水利水电工程施工技术及施工风险研究工作,(电话)13972605807(电子信箱)sunkaichang@ctgu.edu.cn。
  • 基金资助:
    长江科学院开放研究基金资助项目(CKWV2013208/KY);湖北省自然科学基金重点项目(2012FFA087)

Experimental Research on the Influence of Particle Size and Gradation on Repose Angle of Rockfill

SUN Kai-chang1, LIU Lin-feng1, MING Hua-jun1 ,XU Xiao-feng1, LI Quan1, TONG Jia-xin2   

  1. 1.College of Hydraulic and Environmental Engineering, China Three Gorges University, Yichang 443002,China;
    2.Foundation Engineering Co.,Ltd. of China Gezhouba Group,Yichang 443002, China
  • Received:2015-08-05 Revised:2015-09-18 Online:2016-07-25 Published:2016-07-25

摘要: 为探究不同粒径及级配对碎石料休止角的影响,通过散粒体边坡堆积试验中改进的碎石料休止角测量方法,对不同粒径及级配碎石料休止角进行测量,并结合试验堆积现象进行观察分析。结果表明随均质粒径碎石料粒径的增大,休止角逐渐增大;随不均匀系数的增加,平均粒径对休止角的影响逐渐变小;不均匀系数对休止角的影响呈先增大后趋于稳定;颗粒级配分布愈不均匀,散粒体边坡休止角越大。

关键词: 碎石料, 休止角, 散粒体斜坡, 不均匀系数, 堆积现象

Abstract: In order to explore the influence of gradation and particle size on repose angle of rockfill, we conducted accumulation model test of granular mixtures slope and analyzed the accumulation phenomenon. Then we measured the repose angle of rockfill material with different particle sizes and gradations by improved measuring method. The results show that repose angle increases gradually with the increase of particle size of homogeneous rockfill. The influence of average particle size on repose angle is weakened gradually with the increase of non-uniform coefficient, while the influence of non-uniform coefficient on the repose angle increases firstly and then keeps stable. Besides, the repose angle of granular mixtures becomes larger when the particle size distribution is more uneven.

Key words: rockfill material, repose angle, granular mixtures slope, non-uniform coefficient, accumulation phenomenon

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