Experimental Investigation of Simulating Similar Materials of Multi-Seam Mining in Steep

Abstract:

The similar material model method is used to simulate to the movement of cover rock and ground which is caused by mining underground coal, the substance of deformation and failure law of similar material model method is that artificial materials which are used in the experiment have similar physical and mechanical properties as archetype, affinity constants of geometry, movement and force are used as similarity index and criteria in the simulation experiment as the most important factors. The prototype model is made into a certain proportion model in reduction, and the initial state and boundary conditions of model must be similar as archetype. Then exploit the simulating model, the regular patterns of fault destruction, curve, movement and deformation of cover rock can be discovered in the process of exploiting the simulating model, and the movement and deformation of the surface and its sphere of influence can also be got. Finally the observations of model can be calculated and projections up to the prototype by the similarity index, so the most important regular pattern of the prototype can be got.

• Periodical: Advanced Materials Research (Volumes 255-260)
• Pages: 3765-3769
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.255-260.3765
• Online since: May 2011
• Authors: Kui Xing Liu, Xiao Gang Wei, Shu Xian Liu, Li Ping Lv
• Keywords: Experimental Investigation, Mining Subsidence, Similar Material, Steep Seam

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