煤矿井下小断层延伸长度定量化预测研究

以山西A矿开采的3号煤层采掘活动已揭露的小断层资料为基础,选取断层落差、倾角、延伸长度3个参数,通过多线性回归方法构建NW、NE 2个方向的断层延伸长度预本构模型,并进行现场应用。结果表明,构建的小断层预测模型预测的小断层延伸长度的准确率在90%以上,可以为后续揭露小断层延伸长度的确定提供可靠的参数指导。

Research on Quantitative Prediction of Small Fault Extension Length in Underground Coal Mine

Based on the data of small faults exposed by the mining activities of No.3 coal seam in Shanxi A Coal Mine,this paper selected three parameters of fault throw,dip angle and extension length,constructed a pre-constitutive model of fault extension length in NW and NE directions through multi-linear regression method,and applied it in the field.The results show that the accuracy of the prediction model of the small fault is more than 90%,which can provide reliable parameter guidance for the determination of the extension length of the subsequent exposed small faults.