不同倾角硐室围岩稳定性模型试验研究及数值模拟
DOI:
作者:
作者单位:

1.青岛科技大学机电工程学院;2.山东省青岛市崂山区松岭路99号青岛科技大学机电工程学院

作者简介:

通讯作者:

中图分类号:

TU 45;

基金项目:

国家自然科学基金项目(面上项目,重点项目,重大项目)


Model Test and Numerical Simulation of Surrounding Rock Stability of Chambers with Different Inclination Angles
Author:
Affiliation:

College of Mechanical and Electrical Engineering, Qingdao University of Science and Technology

Fund Project:

The National Natural Science Foundation of China (General Program, Key Program, Major Research Plan)

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    论文首先在相似理论的基础上,以河砂、水泥、石膏为相似材料,调整其配比,制备出符合模型实验要求的砂岩和泥岩相似材料。通过对模型试样进行长期加载试验得到:当进行长期加载时,随着层状倾角的增大,位移变化先增大后减小,这是由于随着倾角的不断增加,互层岩体模型的整体刚度先减小后增加,所以导致了位移先增大后减少。最后利用ANSYS有限元软件对互层岩体硐室开挖模型进行稳定性分析,帮中与顶板底板处变形较大,同时由于层理的存在使得顶板位置的变形要大于帮中位置,倾角对硐室围岩变形以及应力变化具有较大影响,45°倾角时硐室围岩的变形量最大,应力集中最明显,此时容易发生滑移破坏。文中结论对实际地下工程支护和设计有一定的借鉴意义。

    Abstract:

    : Firstly, on the basis of similarity theory, using river sand, cement and gypsum as similar materials, adjusting their proportions, similar sandstone and mudstone materials which meet the requirements of model experiment are prepared. Through the long-term loading test of the model specimen, it is found that the displacement increases first and then decreases with the increase of the stratified dip angle, which is due to the decrease of the overall stiffness of the interbedded rock mass model first and then increases with the increase of the dip angle, which leads to the increase of the displacement first and then decreases. Finally, the ANSYS finite element software is used to analyze the stability of the excavation model of the interbedded rock mass chamber. The deformation of the roof is larger in the middle of the wall and the roof floor. At the same time, the deformation of the roof position is larger than that in the middle of the wall because of the existence of bedding. The inclination angle has a great influence on the deformation and stress change of the surrounding rock of the chamber. The deformation of the surrounding rock of the chamber is the largest at 45 degrees of inclination, and the stress concentration is the It is easy to slip and destroy. The conclusions in this paper can be used for reference in support and design of underground engineering.

    参考文献
    相似文献
    引证文献
引用本文

王永岩,张余标,冯学志,等. 不同倾角硐室围岩稳定性模型试验研究及数值模拟[J]. 科学技术与工程, 2019, 19(32): 281-287.
WANG Yongyan, ZHANG Yubiao,,et al. Model Test and Numerical Simulation of Surrounding Rock Stability of Chambers with Different Inclination Angles[J]. Science Technology and Engineering,2019,19(32):281-287.

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2019-04-11
  • 最后修改日期:2019-06-12
  • 录用日期:2019-07-08
  • 在线发布日期: 2019-12-04
  • 出版日期:
×
律回春渐,新元肇启|《科学技术与工程》编辑部恭祝新岁!
亟待确认版面费归属稿件,敬请作者关注