Research on Distribution and Evolution Law of the Damage-Fracture Field in Mining Process

Abstract:

The distribution and spatiotemporal evolution law of the mining-induced fracture field was studied by means of damage mechanics. The damage variable correlated with the excavation process was introduced, which was used to describe the distribution characteristics of fractures in rock mass. In accordance with the damaged theory, the elastic finite element program was developed, by which the analysis of mining process of one coal seam was made of. The material damage accumulation taken into consideration, the distribution and evolution law of the volumetric strain, stress and damage field was obtained, which provided a theoretic reference for the design of gas drainage and improving the efficiency of gas extraction.

• Periodical: Advanced Materials Research (Volumes 243-249)
• Pages: 5964-5967
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.243-249.5964
• Online since: May 2011
• Authors: Ai Bin Xu, Feng Gao, Hong Mei Cheng, Xing Guang Liu
• Keywords: Damage Variable, Finite Element Model (FEM), Fracture Field, Mining

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