煤矿井下随掘地震速度分析方法研究

Research on Velocity Analysis Method for Seismic While Drilling Underground Coal Mine

地震波的速度参数贯穿于地震数据的采集、处理和解释的整个过程,速度参数的准确与否决定了最终解释结果的可靠性。煤矿井下随掘地震监测是一种连续采集地震数据的勘探方法,其接收到的数据量巨大,海量的数据量若采用人工处理的方式则无法实现随掘监测的实时性与数据处理的自动化。常规地震数据通过采用交互速度分析的方式得到地震波速度,而随掘地震数据的信噪比较低,没有明显可识别的同相轴。因此,常规地震数据处理采用的交互速度分析方式难以应用于随掘地震数据的处理。介绍了一种煤矿井下随掘地震速度分析方法,以实现随掘速度分析的自动化为目标,探索并研究了速度分析中叠加及相关振幅的不同算法,优选了适用于随掘地震数据的速度分析算法,将不同的叠加及相关振幅算法应用于随掘数据,取得了较好的处理效果,对实际生产中随掘地震数据速度分析提供了一定的借鉴。

The parameter of seismic velocity runs through the whole process of seismic data acquisition,processing and interpretation.The accuracy of the velocity determines the reliability of the final interpretation results.Underground mining seismic monitoring is a kind of exploration method to continuously collect seismic data,which receives a huge amount of data.If the massive amount of data is processed manually,the real-time monitoring and automatic data processing cannot be realized.The seismic wave velocity of conventional seismic data is obtained by using the method of interactive velocity analysis,but the signal-to-noise ratio of the seismic data is low,and there is no obvious discernable in-phase axis.Therefore,the interactive velocity analysis method used in conventional seismic data processing is difficult to be applied to the processing of seismic data with excavation.Introduces a seismic velocity analysis method for underground mining in coal mine.With the goal of realizing the automation of seismic velocity analysis,different algorithms of superposition and related amplitude in velocity analysis are explored and studied,and velocity analysis algorithms suitable for seismic data with mining are selected.Different superposition and related amplitude algorithms are applied to the data with mining,and good processing results are obtained.It provides some reference for the analysis of seismic data velocity in actual production.