东北大学学报(自然科学版) ›› 2023, Vol. 44 ›› Issue (5): 697-704.DOI: 10.12068/j.issn.1005-3026.2023.05.012

• 资源与土木工程 • 上一篇    下一篇

粗糙裂隙内涡旋结构演化特征及影响因素分析

杨金金1,2, 王者超1,2, 乔丽苹1,2, 李崴1,2   

  1. (1.东北大学 资源与土木工程学院, 辽宁 沈阳110819; 2.东北大学 深部金属矿山安全开采教育部重点实验室, 辽宁 沈阳110819)
  • 发布日期:2023-05-24
  • 通讯作者: 杨金金
  • 作者简介:杨金金(1988-),女,河南巩义人,东北大学博士研究生; 王者超(1980-),男,山东高唐人,东北大学教授,博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(42177157).

Analysis of Evolution Characteristics and Influencing Factors of Vortex Structure in Rough-Walled Fracture

YANG Jin-jin1,2, WANG Zhe-chao1,2, QIAO Li-ping1,2, LI Wei1,2   

  1. 1. School of Resources & Civil Engineering, Northeastern University, Shenyang 110819, China; 2. Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines, Northeastern University, Shenyang 110819, China.
  • Published:2023-05-24
  • Contact: WANG Zhe-chao
  • About author:-
  • Supported by:
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摘要: 为探究粗糙裂隙内细观流动结构演化过程及影响因素,用COMSOL Multiphysics可视化了不同条件下粗糙裂隙渗流场中的流动结构.基于响应面法建立多因素与涡旋结构面积的二阶多项式回归方程,并进行了方差分析和显著性检验,探讨多因素间交互作用对裂隙内涡旋结构的影响.结果表明:粗糙裂隙内细观流动结构演化过程包括涡旋结构发生、发展、破裂和稳定;回归模型的显著性和适应性良好,可以较为有效确定影响因素的重要程度;多因素交互作用对涡旋结构的影响程度中平均开度最大,速度次之,裂隙粗糙度最小.研究结果对揭示裂隙非线性渗流细观机理有重要意义.

关键词: 岩体裂隙;粗糙度;涡旋结构;演化特征;响应面

Abstract: To study the evolution characteristics and influencing factors of vortex structure in rough-walled fracture, COMSOL Multiphysics is used to simulate the flow field under different conditions, and the meso-flow structure is visualized. Based on the response surface methodology (RSM), a second-order polynomial regression equation is established, and the variance analysis and significance test of the regression equation are carried out, and the effect of multi-factor interaction on vortex structure is discussed. The results show that the evolution process of meso-flow structure in rough-walled fracture includes the generation, development, rupture and stability. The regression model has good significance and adaptability, which can effectively determine the significance of influencing factors. The influencing degree of multi-factor interaction on vortex structure is as follows: average aperture is the largest, followed by velocity, and roughness is the smallest. The results are of great significance to reveal the mesoscopic mechanism of nonlinear seepage in fractures.

Key words: rock fracture; roughness; vortex structure; evolution characteristics; response surface

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