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边坡模型相似材料配比试验研究
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  • 英文篇名:Experimental study on similar material proportion of slope model
  • 作者:詹志发 ; 贺建先 ; 郑博文 ; 祁生文
  • 英文作者:ZHAN Zhi-fa;HE Jian-xian;ZHENG Bo-wen;QI Sheng-wen;China Highway Engineering Consultants Corporation;Key Laboratory of Shale Gas and Geoengineering,Institute of Geology and Geophysics,Chinese Academy of Sciences;University of Chinese Academy of Sciences;
  • 关键词:边坡模型 ; 相似材料配比 ; 正交试验 ; 极差分析 ; 方差分析 ; 敏感性分析
  • 英文关键词:Slope model;;Similar material proportion;;Orthogonal test;;Range analysis;;Variance analysis;;Sensitivity analysis
  • 中文刊名:DQWJ
  • 英文刊名:Progress in Geophysics
  • 机构:中国公路工程咨询集团有限公司;中国科学院地质与地球物理研究所中国科学院页岩气与地质工程重点实验室;中国科学院大学;
  • 出版日期:2019-06-15
  • 出版单位:地球物理学进展
  • 年:2019
  • 期:v.34;No.155
  • 基金:国家自然科学基金(41825018,41672307,41702345,41807273);; 中国博士后基金(2017M620903)联合资助
  • 语种:中文;
  • 页:DQWJ201903048
  • 页数:8
  • CN:03
  • ISSN:11-2982/P
  • 分类号:390-397
摘要
针对边坡模型试验相似材料配比问题,系统总结了国内外常用的岩体及边坡相似材料配比研究现状:相似材料的配比对物理力学参数特性的影响很大,而不同学者采用的材料及配比方案差异较大,使得边坡模型试验的成果难以得到全面的推广;目前,重晶石粉、石英砂、石膏、甘油、水能模拟自然界中大多数类型的岩体,是进行边坡模型试验的理想材料.采用三因素四水平的正交试验法,对16组不同配比相似材料进行力学试验,通过极差和方差敏感性分析得出结论如下:重晶石粉含量与密度成正比,石膏含量对密度影响不显著;抗压强度与石膏含量呈正相关关系,甘油占比对抗压强度影响明显,呈现先略微增大后急剧降低的特征;弹性模量与甘油和重晶石粉占比呈负相关关系;抗拉强度与甘油占比呈负相关关系,与石膏占比呈正相关关系;随着石膏含量的增加内聚力呈现增大的趋势;内摩擦角呈现出随重晶石粉含量增加而减小的趋势.该问题的研究对边坡模型试验相似材料的配比具有一定的指导意义.
        Based on the similar material proportion problems of slope model test, We conclude the research status of the similar materials proportion of rock mass and slopes. The ratio of similar materials has a great influence on the characteristics of physical and mechanical parameters, and the material proportion schemes adopted by different scholars are quite different, which makes it difficult to comprehensively promote the results of the slope model test. It is found that barite powder, quartz sand, gypsum, glycerin and water can simulate most types rocks. These materials are suitable for the slope model tests. Three-factor four-level orthogonal test method is used to test the mechanical properties of 16 different materials with different proportions. The results of the range and variance sensitivity analysis on physical mechanics parameters are as follows: The barite powder content is proportional to the density, and the effect of the gypsum content on the density. is not significant. The compressive strength increases with the increase of gypsum content, and the glycerin content has a significant effect on the compressive strength, which is characterized by a slight increase and then sharply decreases. The elastic modulus decreases with increasing glycerin and barite powder content. The tensile strength decreases with the increase of glycerin content, and increases with the increase of gypsum content. The cohesive increases with the increase of gypsum content. The internal friction angle shows a tendency to decrease as the barite powder content increases. The study of this problem has certain guiding significance for similar material proportion of the slope model tests.
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