炸药震源和可控震源在厚砾石层覆盖区中的试验对比研究  

Comparative Study on Explosive Source Test and Vibroseis Test in Coverage Area of Thick Gravel Laye

作　　者：张慧利[1] 张琳[1] 刘平[1] 

机构地区：[1]河南省航空物探遥感中心,河南郑州450000

出　　处：《工程地球物理学报》2016年第2期221-226,共6页Chinese Journal of Engineering Geophysics

摘　　要：随着勘探区地震地质条件的日益复杂,如何解决由于地形高差大、卵砾石层发育、潜水面较深等原因造成的原始数据质量较差的情况,这些常见问题成为地震勘探施工的关键。此外,在地震地质条件复杂地区,由于受成井困难、施工效率低、能量及高频衰减严重等因素的影响,采用常规的炸药震源激发很难取得理想效果。本次研究区通过炸药震源与可控震源的试验对比研究,认为在井炮很难实现的复杂地区,采用可控震源组合激发等一系列切实可行的技术措施,可以取得良好的激发效果,获得高信噪比的原始记录,为后续的地震地质解释工作奠定坚实的基础。本次研究,为同类地区的地震勘探施工提供了参考。As the seismic geological condition is increasingly complex in exploration area,how to solve the poor quality of the raw data caused by the big terrain elevation difference,gravel layer development and deeper groundwater level become the key of seismic prospecting.In addition,in the areas with complex earthquake geological conditions,the conventional explosive source is difficult to achieve the ideal effect,because of the supplying difficulties,low construction efficiency,low energy and high frequency attenuation.Through the comparative study on explosive source and vibroseis,in complex areas that are difficult to implement,a series of practical and feasible technical measures including vibroseis combination can achieve good effects,obtain high signal-to-noise ratio of original records and provide a solid foundation for the seismic geological interpretation of the subsequent work.Lastly,this study provides reference for seismic prospecting in similar areas.

关 键 词：地震勘探 炸药震源 可控震源 厚砾石层 

分 类 号：P631.4[天文地球—地质矿产勘探]