Earthquake forward modelling method based on rock outcrop radar detection

Abstract

The invention relates to an earthquake forward modelling method based on rock outcrop radar detection. The method includes the following steps: selecting a rock outcrop profile and setting a radar detection measuring line; performing rock outcrop section measurement and geological description; respectively selecting 100MHz and 400MHz radar antennas to continuously detect the rock outcrop section along the measuring line and obtaining the radar section data detected by the antenna at the corresponding frequency; performing data imaging processing on the acquired radar data; stimulating the earthquake forward modelling result of the described rock outcrop section by means of the radar data imaging processing result; and comparing the low-frequency and high-frequency earthquake forward modelling results to obtain the respective earthquake reflection characteristics of the same rock outcrop geologic body in the high-frequency and low-frequency earthquake data and to guide the geological interpretation of earthquake data of an underground reservoir. A typical rock outcrop is taken as a geological model, so that the defects of geological model simplification and idealization in the earthquake reflection forward modelling simulation method based on value simulation and physical model physical simulation can be overcome.

Description

technical field [0001] The invention belongs to the field of geophysical exploration, and in particular relates to a stratum seismic reflection forward modeling method based on rock outcrop radar detection, which utilizes radar to detect the internal structure of rock outcrop and its geophysical reflection information, and simulates the stratum seismic reflection result. Background technique [0002] Seismic reflection forward modeling reveals the seismic reflection characteristics of strata under different geological conditions, provides a theoretical basis and guidance for seismic data processing and geological interpretation, and is an important basis for seismic data processing and seismic geological interpretation under complex geological conditions. [0003] Seismic reflection forward modeling is produced and developed along with seismic data processing and interpretation. After decades of development, two different methods of seismic numerical simulation forward modeli...

AI Technical Summary

Problems solved by technology

[0008] Although GPR and artificial seismic reflection data reflect different characteristic parameters of the formation, both are reflection information of the formation interface, and the detection principles are similar and comparable. Therefore, in the geological interpretation method of GPR data , the interpretation method and conceptual system of seismic stratigraphy have been accepted by many scholars. Adrian Neal (2004) demonstrated the similarity between the two in the detection of rock outcrops in his research, and pointed out that the interpretation method of seismic stratigraphy is important in the interpretation of ground penetrating radar data. The application is feasible, but limited by the research scale of GPR, it is not recommended to apply the large-scale concept (sequence and sequence boundary) to the interpretation of GPR data