CAJ | 학술논문

分析了山前带地区近地表地震地质条件的特点,探讨了影响山前带地区构造不确定的因素,在此基础上提出了固定剥离面静校正处理技术.设计了一个典型的山前带二维速度模型,基于其数值模拟数据,对固定剥离面静校正技术的剥离量、剥离深度、充填速度进行了分析,并讨论了应用该技术的必要性.将该静校正技术应用于正演模拟数据的深度偏移处理中,并与常规静校正技术得到的深度偏移剖面进行了对比分析,结果表明,该技术能有效地提高近地表静校正精度、速度分析精度和构造落实的可靠性.
분석료산전대지구근지표지진지질조건적특점,탐토료영향산전대지구구조불학정적인소,재차기출상제출료고정박리면정교정처리기술.설계료일개전형적산전대이유속도모형,기우기수치모의수거,대고정박리면정교정기술적박리량、박리심도、충전속도진행료분석,병토론료응용해기술적필요성.장해정교정기술응용우정연모의수거적심도편이처리중,병여상규정교정기술득도적심도편이부면진행료대비분석,결과표명,해기술능유효지제고근지표정교정정도、속도분석정도화구조락실적가고성.
The characteristics of near surface seismic geologic conditions at piedmont zone were analyzed,and the factors causing the uncertainty of structures imaging in piedmont zone were probed.On the basis,fixed stripping-surface statics technique was proposed,a typical 2-D velocity model of piedmont zone was designed.Then,based on numerical simulation data,the overburden amount,stripping depth,filling velocity and the necessity for applying fixed stripped-surface statics was analyzed.The proposed statics technique was used in depth migration,and the result was compared to the depth migration profile after conventional statics technique.The results showed that the proposed technique can effectively improve the accuracy of near surface statics,the accuracy of velocity analysis,and the reliability of structure imaged.