黄土覆盖区断层反射地震正演模研究及应用  

Research and application of forward modeling of fault reflection earthquake in Loess covered area

作　　者：李伊东 Li Yidong(school of Geoscience and Engineering,Xi’an University of Petroleum,Xi’an,Shaanxi 710065)

机构地区：[1]西安石油大学地球与科学工程学院

出　　处：《云南化工》2019年第12期158-159,共2页Yunnan Chemical Technology

摘　　要：选用不同位置炮集的地震响应,对黄土断层模型中地震波的传播规律和地震响应特征的变化分析。经研究可得多个炮集记录的对比不但可以对断层进行快速地判断,而且为判别其类型、分析其断裂范围与跨度埋深等各个方面提供极为重要的依据。这种分析方法不仅能有效地指导实际工程勘探中断层的识别,为观测系统的合理设计和采集参数的设置提供指导,而且对提高黄土工程地震勘探的效率和准确度有重要作用。the seismic response of different position cannon sets is selected to analyze the propagation law of seismic wave and the change of seismic response characteristics in the Loess fault model.Through the study,we can get the contrast of many shot records,which can not only judge the fault quickly,but also provide the very important basis for judging its type,analyzing its fault range and span buried depth.This analysis method can not only effectively guide the identification of the interrupted layers in the actual engineering exploration,but also provide guidance for the reasonable design of the observation system and the setting of acquisition parameters,and play an important role in improving the efficiency and accuracy of the loess engineering seismic exploration.

关 键 词：弹性波方程 有限差分法 波场分析 浅层断层 

分 类 号：P631.4[天文地球—地质矿产勘探]