Study On Critical Technologies Based On Ground Penetrating Radar In Quality Test Of Land Consolidation

This dissertation is on the background of the "Twelfth Five-Year" task "Research and demonstration of land consolidation quality test equipment. At present, China is gradually developing extensive land consolidation engineering. There are no classification criteria for the quality of land consolidation. Moisture content and degree of compacting are the key physical parameters of the quality of land consolidation. Currently, indoor sampling test methods cannot meet the needs of extensive land consolidation engineering, so the study of new testing technology is of great significance.The dissertation establishes a variety of physical models of different parameters through the means of geological radar transmission technology. First, in order to provide a theoretical basis for the study of extraction of the electromagnetic response characteristics, the dissertation studies propagation characters of electromagnetic waves in soil with different physical characteristics. It also establishes electromagnetic wave influence laws modeled for physical soil parameters. Second, with the intense research of modern power spectrum, the extraction algorithm based on its corresponding characteristic was put forward according to the change of physical characteristics. Finally, the dissertation establishes a sorting algorithm based on BP neural networks for the quality of land consolidation according to the response characteristic of soil with different physical characteristics. The base application experiments further verify the validity of the classification method. This dissertation achieves innovations in the following aspects:It establishes the theory and a technological method based on geological radar technology for the semi-quantitative classification of quality of land consolidation. It makes it possible to transition from qualitative interpretations to quantitative interpretations for geological radar technology, and lays the foundation for quantitative standardization of the quality of land consolidation.