Numerical Simulation on Controlling Factor of Energy Distribution in Coal Bump

Abstract:

Elastic energy that cause coal bump will be stored in coal and rocks when excavating, which has a relationship with time and space. Based on analysis of "7.16 coal bump" accident in Cheng Shan coal mine, 3 impact factors including stability-time, goaf and roof strength were confirmed, then the distribution of energy under different conditions was simulated with Flac3D, the result showed that, 3 mentioned factors all have an impact on energy, and the impact descending order of these factors is: goaf, roof strength and time, while the controlling factor of this accident is goaf.

• Periodical: Advanced Materials Research (Volumes 945-949)
• Pages: 115-120
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.945-949.115
• Online since: June 2014
• Authors: Hai Tao Li*, Cong Jiang, Jiao Xia Liu
• Keywords: Coal Bump, Controlling Factors, FLAC3D, Space, Time

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