CAJ | 학술논문

为有效探测深部矿体，研究地震波微弱信号增强技术至关重要。采用有限差分法，对不同震源激发方式产生的地震波场响应进行数值模拟。震源方向特征、单炮记录和单道反射波的对比结果表明：相对于单震源和组合震源，相控震源可以明显改变地震波场能量的分布，增强深部矿体微弱的反射信号。延迟参数不同，对微弱信号的增强能力也不同，可以根据需要设置合适的延迟参数。总体来说，相控震源可以为深部矿体勘探提供有利条件。
위유효탐측심부광체，연구지진파미약신호증강기술지관중요。채용유한차분법，대불동진원격발방식산생적지진파장향응진행수치모의。진원방향특정、단포기록화단도반사파적대비결과표명：상대우단진원화조합진원，상공진원가이명현개변지진파장능량적분포，증강심부광체미약적반사신호。연지삼수불동，대미약신호적증강능력야불동，가이근거수요설치합괄적연지삼수。총체래설，상공진원가이위심부광체감탐제공유리조건。
To explore deep mineral resources effectively, the technology of improving weak signals is an essential technology for seismic waves. Finite-difference method was used for the numerical simulation of wave propagation and response of detector for different sources. By contrast of sources directional character, single shot records and single-channel reflected waves, the results show that phased array sources can change energy direction of seismic field obviously and enhance the reflected weak signals from deep mineral resources. For different delay parameters, the ability of improving weak signals is also different. Suitable delay parameters can be chosen in accordance with needs. On the whole, phased array sources can effectively improve the quality of seismic data from deep mineral resources.