• (1)2008-2020年连续13年获得中国科技核心期刊
  • (2)2019年被中国科学院文献情报中心中国科学引文数据库CSCD(核心库)收录(2019-2020)
杨金宝, 柴军瑞, 许增光, 覃 源.基于修正立方定律对单裂隙辐射流剪切耦合的研究水资源与水工程学报[J].,2019,30(1):217-225
基于修正立方定律对单裂隙辐射流剪切耦合的研究
Study on shear coupling of single fracture radiation flow based on modified cubic law
  
DOI:10.11705/j.issn.1672-643X.2019.01.33
中文关键词:  (西安理工大学 省部共建西北旱区生态水利国家重点实验室, 陕西 西安 710048)
英文关键词:radiation flow cubic law  linear coefficient  nonlinear coefficient  shear rate  high hydraulic head  critical Reynolds number
基金项目:国家自然科学基金项目(51679197、51409206、51409208); 陕西省重点科技创新团队项目(2013KCT-015)
作者单位
杨金宝, 柴军瑞, 许增光, 覃 源 (西安理工大学 省部共建西北旱区生态水利国家重点实验室 陕西 西安 710048) 
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中文摘要:
      修正了辐射流立方定律,并研究了裂隙的力学性能和水力特性。进行了不同恒定法向压力和剪切速率下的高液压水头剪切渗流实验。发现峰值剪切强度随剪切速率的增加呈现先增大后减小的趋势。线性系数A和非线性系数B都随剪切位移先增大后减小,且减小后的稳定值小于剪切破坏前的值。但是系数B比系数A大5个数量级,变化幅度更大。临界雷诺数经剪切破坏后大于剪切破坏前的值,流态将变好。此外,剪切过程中的水力特性也表现出与力学性能相似的趋势。
英文摘要:
      The cubic law of radiation flow was corrected, and the mechanical properties and hydraulic characteristics of fracture were studied. High hydraulic head shear percolation experiments at different constant normal pressures and shear rates were performed. It was found that the peak shear strength increased first and then decreased with the increase of shear rate. The linear coefficient A and the nonlinear coefficient B exhibit a tendency to decrease as the shear displacement first increases and a decrease in the stable value smaller than the value before shear failure. However, the coefficient B is five orders of magnitude larger than the coefficient A, and the magnitude of the change is larger. The critical Reynolds number increases after shear failure to a value greater than that before shear failure, and the flow state will become better. In addition, the hydraulic properties during shearing also show a similar trend to mechanical properties.
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