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金属矿山 ›› 2011, Vol. 40 ›› Issue (09): 44-48.

• 采矿工程 • 上一篇    下一篇

深部巷道破坏过程相似模拟实验研究

曾开华1,许家雄1,张国锋2   

  1. 1.南昌工程学院土木工程系;2.深部岩土力学与地下工程国家重点实验室
  • 出版日期:2011-09-13 发布日期:2011-09-19

Experimental Research on Simulation of Deep Tunnel Destruction Process

Zeng Kaihua1,Xu Jiaxiong1,Zhang Guofeng2   

  1. 1.Department of Civil Engineering,Nanchang Institute of Technology;2.State Key Laboratory for Geomechanics and Deep Underground Engineering
  • Online:2011-09-13 Published:2011-09-19

摘要: 地质力学模型实验是根据一定的相似原理对特定工程地质问题进行缩尺研究的一种方法,其研究的对象主要是岩体,如何有效模拟岩体的结构性特征和产状是地质力学模型实验设计中需要考虑的一个重要方面。此外,物理模型实验还存在周期长、费用高、材料不可重复利用等不足。为此,结合中国深部煤岩的赋存特点,利用自行研制的YDM-C型岩体工程与地质灾害模拟实验装置,提出了物理有限单元板模拟岩体产状及结构性特征的新方法,并可通过回收上一次实验中尚未破坏的物理有限单元板,留待下次实验继续使用来缩短实验周期,降低实验成本。实验结果表明:YDM-C系统能较好地满足模型边界的相似条件;使用板状结构单元可以很好地模拟岩体产状;所构建的物理模型能够很好地满足实际工程地质状况;再现了实际工程中的破坏现象和过程。

关键词: 模型实验, 深部工程, 物理有限单元, 相似材料

Abstract: Geomechanical model test is a kind of scale rule research method to specific geotechnical engineering problems based on the similarity principle.The research mainly focuses on rocks.How to effectively simulate the structural characteristics and its occurrence is an important aspect to be considered in experimental design of geomechanical model.In addition, there are some shortcomings in the physical model tests, such as long period, high cost, materials that can not be repeatedly utilized.In view of the problems above, and combining with the occurrence characteristics of deep coal in China, the self-developed YDM-C-type devices for rock engineering and geological disasters simulation were utilized, proposing a new method of simulating the rock mass occurrence and its structural characteristics with the physical finite element plate.The finite element plate that had not been destructed in the last test was recovered and used in the next experiment to reduce the experimental period, and lower test costs.The results showed that YDM-C system can satisfy the similar conditions of model boundary; The plate unit could better simulate the occurrence of rock mass; the physical model established  could well satisfy geological conditions of practical engineering; And the tests recreated the destruction phenomena and processes of practical engineering.

Key words: Model test, Deep engineering, Physical finite element, Similar material