应用非线性地震属性预测煤矿奥陶系灰岩含水性:许瞳煤矿实例(英文)
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摘要
奥陶系灰岩水是中国北方地区煤矿突水的主要来源。本文介绍了利用熵、最大李氏指数及分形分维等三种非线性地震属性预测奥陶系灰岩含水的方法,分析了这三种属性的提取和应用。以许疃煤矿81、82采区为例,利用上述单属性及多属性综合分析,预测许疃煤矿81、82采区可能的奥陶系灰岩含水区域。实际应用表明,非线性地震属性是奥陶系灰岩含水性预测的有效工具。
Ordovician limestone water is the main source of water inrush in North China coal mines. In this paper, we analyze the characteristic of three kinds of nonlinear seismic attributes, such as the largest lyapunov exponent,fractal dimension and entropy and introduce their calculation methods. Taking the 81st and 82nd coal districts in the Xutuan coal mine as examples, we extract the three seismic attributes based on the 3D prestack migration seismic data of this area, which can display the Ordovician limestone fracture distribution in the mine. We comprehensively analyzed the three nonlinear seismic attributes and compared the results with transient electromagnetic exploration results and determined the possible Ordovician limestone aquosity distribution. This demonstrated that the nonlinear seismic attributes technology is an effective approach to predict the aquosity of Ordovician limestone.
引文
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