To explore the phenomenon of particle breakage of rockfill materials for dam construction,rockfill materials with different coarse grain content and water content are selected as the research object,and indoor compaction tests are carried out to analyze the compaction characteristics,particle breakage characteristics and fractal characteristics of soil,and reveal its mechanical response mechanism.The test results are as follows.The moisture content increases,the dry density of rockfill is firstly increased and then decreased.Maximum dry density and optimal water content are positively correlate and negatively correlate with the coarse grain content,respectively.There is obvious particle break-age in rockfill,and the particle breakage rate increases with the increase of coarse particle content and water content.There is a certain internal relationship between fractal dimension and particle breakage rate.The coarse grain content and water content are inversely and proportional to the fractal dimension,respectively.Compared with the water con-tent,the coarse grain content has a more significant effect on the fractal dimension.
关键词
筑坝堆石料/粗粒含量/压实特性/颗粒破碎/粒度分形
Key words
dam rockfill materials/coarse grain content/compaction characteristics/particle breakage/frac-tal characteristics
维普
万方数据