Coupling Model of Evolution of Mining Fissure Elliptic Paraboloid Zone and Methane Delivery

Abstract:

After mining, a dynamic distribution of mining fissure elliptic paraboloid zone in the overlying stratum would be formed. Based on the rock mechanics, seepage flow mechanics, mass transfer theory and elastic-plastic theory, the coal-rock mass deformation equation, mixture gas seepage equation and gas diffusion equation of the mining fissure elliptic paraboloid zone are deduced. Combined with various boundaries, initial conditions, the multi-field coupling mathematical model of mining fissure elliptic paraboloid is obtained. The model provides a theoretical basis for numerical simulation of gas drainage system layout.

• Periodical: Advanced Materials Research (Volumes 734-737)
• Pages: 546-550
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.734-737.546
• Online since: August 2013
• Authors: Hai Fei Lin, Rui Feng Ma, Shu Gang Li, Lian Hua Cheng, Hong Yu Pan, Li Li
• Keywords: Concentration Field, Coupling Model, Deformation Field, Mining Fissure Elliptic Paraboloid Zone, Seepage Field

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