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| Study On Middle Fully Mechanized Working Face Reserved Top Coal Pillar Influence to Mining Pressure |
| QIU Xiao-nian |
| No. 1 Mining Team, Tashan Mine of Datong Mining Group, Datong 037001, China |
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Abstract Based on large mining pressure in 8108 working face recovery of Tashan Mine, mining pressure in materials roadway and transportation roadway combined working face was more obvious, which led to roof separation and floor heave. Working face with band top coal pillar was adopted to control the working face pressure, pressure strength weakened, which achieved the purpose of safe mining.
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