| 人工堆石料的颗粒破碎率 |
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| 引用本文： | 孔德志,张其光,张丙印,孙逊.人工堆石料的颗粒破碎率[J].清华大学学报(自然科学版),2009(6). |
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| 作者姓名： | 孔德志 张其光 张丙印 孙逊 |
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| 作者单位： | 清华大学水利水电工程系水沙科学与水利水电工程国家重点实验室; |
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| 基金项目： | 国家自然科学基金资助项目(50639060);;高等学校博士学科点专项科研基金资助课题(20060003040) |
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| 摘 要： | 天然堆石料的颗粒破碎率不易准确测量。为精确测量堆石料的颗粒破碎率,对人工模拟堆石料进行了颗粒破碎三轴试验研究,并对试验后试样颗粒破碎的情况进行了详细筛分和统计。结果表明:破碎颗粒可分为残缺颗粒和完全破碎颗粒,两者的质量分数存在幂函数关系。现有的多粒径指标Bg、Bf和Br仍可作为颗粒破碎的影响参量使用,而单一粒径破碎指标B15、B10和B60局限性较大。
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| 关 键 词： | 人工堆石料 三轴试验 颗粒破碎 破碎率 |
Particle breakage ratio of artificial rockfill materials |
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| KONG Dezhi,ZHANG Qiguang,ZHANG Bingyin,SUN Xun.Particle breakage ratio of artificial rockfill materials[J].Journal of Tsinghua University(Science and Technology),2009(6). |
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| Authors: | KONG Dezhi ZHANG Qiguang ZHANG Bingyin SUN Xun |
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| Institution: | State Key Laboratory of Hydroscience and Engineering;Department of Hydraulic Engineering;Tsinghua University;Beijing 100084;China |
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| Abstract: | The particle breakage ratio of real rockfill materials is difficult to measure precisely.The accuracy was improved in triaxial tests of artificial rockfill materials with the particle breakage of the samples after the tests determined by sieving and statistical analysis.The tests show that the fragmentary particles and completely cracked particles can be distinguished after the particles are crushed and the relationship between their mass percentages can be fit by a power law function.The particle breakage ... |
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| Keywords: | artificial rockfill materials triaxial tests particle breakage breakage rate |
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