【摘要】 该文从TSP的理论基础和观测结构出发,结合岩石物理力学性质参数的工程意义,分析研究了地震波从半空间到全空间的传播规律,利用有限差分法初步实现了全空间的数值模拟,分析了常见不同异常体的响应特征。从正演理论上指出了TSP一维观测系统最大的缺点,是对于点状异常体产生的多次绕射波无法进行偏移归位处理,导致震相复杂,不便于提取有效波场进行数据处理,降低了准确度。从二维空间地震波场模拟中得到异常的绕射波,为异常体的响应提供了理论依据。更多还原

【Abstract】 In this paper,starting from the theoretical basis and observation structure of TSP,combining with the engineering significance of physical and mechanical properties of rocks,the propagation law of seismic wave from half space to full space is analyzed and studied. The whole space numerical simulation is preliminarily realized by using finite difference method,and the response characteristics of different anomalous bodies are analyzed. From the forward theory,it points out the biggest disadvantage of TSP 1-D observation system is that the multiple diffracted waves generated by point-like anomalous bodies cannot be migrated and relocated,which results in complex seismic phases and inconveniences in extracting effective wave field for data processing and reduces the accuracy. The abnormal diffracted waves are obtained from 2-D space seismic wave field simulation,which provides a theoretical basis for the response of abnormal bodies更多还原