三维地震多属性融合技术在O_(2)裂隙发育带定量预测中的应用

Application of 3D Seismic Multi Attribute Fusion Technology inQuantitative Prediction of Ordovician Limestone Fracture Zone

随着煤矿开采深度不断增加,煤层底板灰岩含水层富水特征及突水危险性预测是煤矿深部智能安全绿色开采亟待解决的问题。本文利用灰色关联性分析与多元回归分析方法,结合三维多种属性融合关键技术,对煤层底板灰岩溶裂隙带进行精准定量预测。由于奥陶系(O)灰岩溶裂隙发育抽象系统包含众多因素,笔者特引入岩石RQD指标用来模拟构建数学模型,并将该数学模型用于定量预测奥陶系灰岩溶裂隙发育带。由淮北矿业集团孙疃煤矿83采区奥陶系灰岩裂溶隙发育带定量预测结果表明,此模型经过数学运算将多种地震属性融合后,构建出奥陶系中统O_(2)溶裂隙发育带定量表征参量,其拟合度达88.97%,提高了灰岩溶裂隙发育带预测精度,为煤层底板灰岩发育裂隙带的定量预测提供了一种新途径。

With the increasing mining depths of coal mines,the water-rich characteristics of limestone aquifers on the floor of coal seams and the prediction of water inrush risk are urgent problems to be solved in the intelligent,safe and green mining of deep coal mines.In this paper,the gray correlation analysis and multiple regression analysis methods are used to accurately and quantitatively predict the limestone karst fracture zone of the coal seam floor in combination with the key technology of 3D multi attribute fusion.Because the abstract system of Ordovician limestone karst fracture development contains many factors,the RQD index of rock is introduced to simulate and build a mathematical model,and the mathematical model is used to quantitatively predict the Ordovician limestone karst fracture development zone.The quantitative prediction results of O_(2) limestone fissure development zone in mining area 83 of Suntuan coal mine of Huaibei mining group show that this model,based on mathematical calculation and fusion of multiple seismic attributes,constructs the quantitative characterization parameters of limestone karst fissure development zone,whose fitting degree reaches 88.97%,which improves the prediction accuracy of limestone karst fissure development zone,facilitates popularization and application,and provides a new way for quantitative prediction of limestone fissure zone in coal seam floor.