物探化探计算技术2026，Vol.48Issue(1)：99-106,8.DOI:10.12474/wthtjs.20241224-0002
基于地质雷达衰减梯度因子的岩溶探测应用与研究
Application and research of karst exploration based on geological radar attenuation gradient factor
LI Wenxiu 1LI Tian 2CHEN Jinwen 1FAN Chengyi 3XU Yongbing4
作者信息
- 1. YCIH No.1 Engineering Survey and Design Co.,Ltd.,Kunming 650000,China
- 2. Yunnan Gold Mining Group Co.,Ltd,Kunming 650299,China
- 3. Yunnan Construction Investment First Water Conservancy and Hydropower Construction Co.,Ltd.,Kunming 650000,China
- 4. Yunnan Green Intelligent Construction Research Institute Co.,Ltd.,Kunming 650000,China
- 折叠
摘要
Abstract
This paper proposes the application of the attenuation gradient factor attribute in geological radar karst detection to meet the needs of hidden cave detection and cave filling discrimination.Using the finite-difference time-domain method to simulate the propagation of electromagnetic waves in pure hollow and mud-filled caves,and the generalized S-transform for time-frequency analysis,the results showed that electromagnetic waves propagate in caves with high-frequency attenuation and a decrease in the primary frequency.Subsequently,the attenuation gradient factor was extracted from the numerical simulation data,and the anomalous range of this attribute was consistent with the model cave.Moreover,the attenuation gradient factor for pure hollow caves was greater than that for flushing caves.The application of the attenuation gradient factor in actual karst exploration to characterize karst ranges and distinguish filling types is consistent with on-site conditions and drilling data,indicating that this attribute can provide more reliable and accurate geophysical data in karst exploration projects.关键词
衰减梯度因子/地质雷达/岩溶探测Key words
attenuation gradient factor/geological radar/karst exploration分类
天文与地球科学引用本文复制引用
LI Wenxiu,LI Tian,CHEN Jinwen,FAN Chengyi,XU Yongbing..基于地质雷达衰减梯度因子的岩溶探测应用与研究[J].物探化探计算技术,2026,48(1):99-106,8.
