Development of a Model of a GPR Section of a Frozen Rock Mass with a Crack

Abstract

Summary The results of research on the development of a wave field model obtained during the study of frozen rock mass with crack by GPR are presented. The presence of cracks significantly affects the physical and mechanical properties of rocks, which must be taken into account when planning mining operations and the construction of mining facilities. To establish the peculiarities of manifestation of cracks in the GPR data studied materials of long-term fieldwork in developing areas of alluvial diamond deposits ("Almazy Anabara"), the basic building blocks of GPR and presented in single formula. This formula implemented in program in CKM Matlab, and the results of its performance are compared with simulation results in the system of gprMax. The comparison of the obtained results showed the identity of structure of the GPR wave fields. The correlation coefficient between the obtained matrices, without taking into account the low-amplitude values of multiple re-reflections was 0.91. The conducted studies confirmed the possibility of mathematical description of GPR wave field obtained by probing an array of frozen rocks with crack. The high correlation coefficient showed the adequacy of the developed model of radargram which will be finalized taking into account the radiation patterns of existing GPR.