垂直叠加技术在地震勘探中的应用
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摘要
:延吉盆地深层地震地质条件一般,浅层有一层3～20m厚的第四系卵石沉积,钻孔不易穿过,能量散射严重,表层条件极差。大部分线束在延吉市区穿过,受城市设施的限制,不能使用大药量激发,震源的震动极易于周围建筑物产生谐振,危害较大。针对延吉盆地特点,在激发上做了试验分析研究,唯有垂直叠加效果理想且可行。
In deep layer of Yanji Basin, there are general seismic geological conditions, and in shallow layer of Yanji Basin, there are 3～20m thick pebble sediment of Quaternary system, drilling very difficult, and energy scattering seriously, and the conditions of surface layer much more poor. Most of bunch through downtown of Yanji city, due to limitation of city installations, can not excitation with bulk charge, and shock of seismic source easy to produce resonance with surrounding buildings, there are serious damages. Aim at the properties of Yanji Basin, testing and research on the excitation, only the vertical stack technique can provided ideal effect and operate feasibly.
In deep layer of Yanji Basin, there are general seismic geological conditions, and in shallow layer of Yanji Basin, there are 3～20m thick pebble sediment of Quaternary system, drilling very difficult, and energy scattering seriously, and the conditions of surface layer much more poor. Most of bunch through downtown of Yanji city, due to limitation of city installations, can not excitation with bulk charge, and shock of seismic source easy to produce resonance with surrounding buildings, there are serious damages. Aim at the properties of Yanji Basin, testing and research on the excitation, only the vertical stack technique can provided ideal effect and operate feasibly.
引文