【摘要】 数据采集是浅层地震勘探的首要环节,对后续数据处理和解释都有重大影响。本文在分析浅层地震勘探实际应用条件和方法技术特征的基础上,建立了浅层地震地质模型,并针对不同的采集参数进行了正演模拟研究,重点讨论了不同排列长度以及最小偏移距对单炮记录的影响,由此得出了浅层地震勘探最佳窗口选取的主要依据是浅部目的层的最大入射角,即浅部目的层层位埋深与最大偏移距的关系。正演模拟结果表明,"小排列"不仅是浅层地震勘探的特点,更是数据采集质量的有力保障。更多还原

【Abstract】 Data acquisition which is the primary step of shallow seismic exploration imposes great influences on the subsequent data processing and interpretation. Based on the analysis of the actual application conditions and the technical features of methods of shallow seismic exploration,the shallow seismic geometric model is built,and the forward modeling research is carried out according to different acquisition parameters. The influence of different array length and minimum offset on single-shot record is mainly discussed. The selection of optimum window of shallow seismic exploration is mainly depended on maximum angle of incidence of superficial target layer,i. e. the relationship between burial depth of superficial target layer and maximum offset. The forward simulation results show that the mini-spread is not only the feature of shallow seismic exploration,but also the powerful guarantee for data acquisition quality.更多还原