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| Numerical Analysis of the Destroy Process of Gas Drainage Hole Based on RFPA2D-Flow |
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Received:November 01, 2013
Revised:November 11, 2013
Accepted:November 15, 2013
Published Online:February 12, 2015
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| DOI： |
| KeyWord:gas drainage; drilling failure; plane strain; numerical analysis |
| Author | Institution |
| Lin Jingxiang |
School of Mining Engineering,Heilongjiang universitySof scienceand Technology |
| Sun Guangyi |
Sun Guangyi |
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| Abstract: |
| In this paper, Starting from the Phenomenon of hole subsiding and driller blocking in gas drainage process, using the RFPA2D - the Flow of gas drainage drilling failure process are simulated, the near borehole stress curve of X direction and Y direction, and in the process of the damage on both sides of the up and down hole drilling wall are first cracking and then lead to damage to the left and right sides of the hole wall extends the development process of gradually. |
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