长江科学院院报2016，Vol.33Issue(9)：116-120,5.DOI:10.11988/ckyyb.20150606
散粒体斜坡失稳破坏内部因素试验研究
Internal Factors of the Failure of Granular Mixtures Slope
摘要
Abstract
Among factors which affect the stability of granular mixtures slope,external factors play an inducing role while internal factors dominate,but the natural angle of repose of the slope plays a controlling role.In view of this, granular mixture materials of four different compositions (1 <Cu≤7 )were prepared and model test was conducted to simulate the instability of granular mixtures slope caused by heap.Results indicate that 1 )the angle of repose in-creased with the increase of non-uniform degree of particle;2)with the increase of round degree,the angle of re-pose also tended to increase,but the growth rate was low when round degree was between 1 .14-1 .40,and higher when greater than 1.40;3)along with the increase of m,the angle of repose increased at first and then reduced, and finally gradually stabilized;4)the angle of repose increased with the increase of c and φin general,but the change was slow in the initial stage.Finally,formula of estimating the natural angle of repose of granular mixture slope was established by fitting the five factors using linear regression theory,and was verified to be correct.关键词
散粒体斜坡/多元线性回归理论/休止角/影响因素/估算模型Key words
granular mixtures slope/multiple linear regression theory/angle of repose/influence factor/estimation formula分类
建筑与水利引用本文复制引用
卜祥航,傅荣华,李仅德,黄友..散粒体斜坡失稳破坏内部因素试验研究[J].长江科学院院报,2016,33(9):116-120,5.基金项目
国家自然科学基金资助项目 （）
