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反射波法地震勘探以其采集丰富的地下信息、高分辨率等诸多优点在工程勘察中得到广泛应用。该文结合“西气东输”线路勘察的工程实例,介绍了地震反射波法方法原理与技术,着重突出数据处理的重要性;分析对比了不同参数与方法对处理剖面的影响,确定了地震反射波法资料处理的主要方法和基本流程,特别加强对各CMP道集的速度分析,得到清晰的反射剖面,并给出了综合地层和速度的反射波解释剖面,为工程可行性研究和设计工作提供详细的地质资料和设计参数,取得了良好的勘探效果。
Reflected wave seismic exploration is widely used in engineering survey because of its advantages of collecting abundant underground information and high resolution. This paper introduces the principle and technology of seismic reflection wave method with emphasis on the importance of data processing in combination with the engineering example of “West-East Gas Pipeline” survey. The influence of different parameters and methods on the treatment profile is analyzed and compared The main methods and basic flow of data processing by seismic reflection wave method are analyzed. The velocity analysis of each CMP gathers is especially strengthened, and a clear reflection profile is obtained. The reflection profile of integrated formation and velocity is given. And design work to provide detailed geological data and design parameters, and achieved good exploration results.