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Author(s): |
jian Kang, College of Resource and Environment Engineering, Heilongjiang Institute of Science and Technology, Harbin ,Heilongjiang, China
guang-yi Sun, College of Resource and Environment Engineering, Heilongjiang Institute of Science and Technology, Harbin ,Heilongjiang, China
hai-bo Chen, College of Resource and Environment Engineering, Heilongjiang Institute of Science and Technology, Harbin ,Heilongjiang, China
xiao-jun Yin, College of Resource and Environment Engineering, Heilongjiang Institute of Science and Technology, Harbin ,Heilongjiang, China |
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Abstract: |
When ultra-close distance thin coal seams were simultaneously mined, causing the choice of coalmining method was more difficult because the analysis was not enough profound about the distribution of theabutment pressure and interaction mechanism. Using the FLAC3D established numerical mechanics model,researched ultra-close distance thin coal seams with the simultaneous coal mining in the process change ofthe displacement field, the plastic area and the stress field, and exposed its stress distribution and transfer law,through the industrial-site tests, has been obtained the good technical economic effect. The result indicatedthat ultra-close distance thin coal seams with the simultaneous coal mining were solved by the method ofestablishment numerical mechanics model, compared the traditional method to be more effective and precise.It is worth further discussing and the application when ultra-close distance thin coal seams with thesimultaneous coal mining were solved by numerical simulation.
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