沖擊地壓發生前微震活動時空變化的分形特征

Fractal Character of the Time-Space Change of Microseismicity before Coal Outbursts or Rockbursts

摘要: 礦山微震活動隱含著沖擊地壓趨勢的信息.根據分形幾何學觀點研究了門頭溝煤礦沖擊地壓發生前微震活動的時間分維特征.結果表明,沖擊前微震信息的時間分維可以作為沖擊地壓的預測指標之一。

Abstract: The some information of coal outbursts or rockbursts must be contained in microseismicity before coal outburet or rockburst in mining. In the paper, the feature of time fractal dimension of microseismicity before coal outburst or rockburst in mining is studied by using fractal geometry.It is shown that the time fractal dimension of microseismicity information before coal outburot or rockburst may be used as one of indexes of predicting coal outburst or rockburst.