【摘要】 探讨了延迟爆炸震源技术,设计了延迟震源柱的制作方法,进行了野外点试验和束线试验,对比分析了延迟炸药震源和普通炸药震源所获得的地震资料在频率和能量方面的特征。延迟炸药震源具有丰富的高频成分,其地震波具有较强的下传能力,能提高中深层反射波能量。除垂直向下方向和其附近方向以外的其它方向特别是向上方向和水平方向,由于每个小炸药包爆炸所产生的地震波相位等不一致,所产生的面波等干扰波能量均相互削弱。延迟炸药震源地震剖面各目的层反射波稳定且连续性好,反射特征清楚,断点清晰,说明了延迟炸药震源是一种较好的地震激发震源。在官1井区三维高分辨率地震勘探中采用了这一新技术,获得了好的高分辨率地震资料。更多还原

【Abstract】 This paper discusses delayed blast technology. The assembly of a delayed blast source is introduced. To compare sections resulted from the delayed blast source and conventional explosives, point and swath tests were implemented. It is showed that the delayed blast source has the advantage over conventional explosives. The seismic waves excited by the delayed blast source are rich in high frequency components, and strong in downgoing capability, which are favorable for the enhancement of reflection energy for middle and deep layers. Apart from near vertically downgoing directions, interference waves like ground roll act against each other, especially in up-going and horizontal directions, due to the phase differences of waves. Reflections on the resulted seismic sections are of good definition and continuity, and faults are readily recognized. Satisfactory high resolution seismic data have been acquired by using the new source in Guan 1 survey area.更多还原