The forecast technique of high gas zone in coal-mine

Abstract：In the process of mining, there are usually some high gas zones; gas outbursts or gas explosions take place easily when mining is at high gas zone. In this article, the author probes into the forecast technique using the trend analyse of surplus value. The result of the practice in the 10th mine of Pingdingshan proves that the trend analyse of surplus has higher dependability.

Keyword：high gas zone;forecast technique;trend analyse;