现代雷达2023，Vol.45Issue(12)：15-23,9.DOI:10.16592/j.cnki.1004-7859.2023.12.003
不同测量角度下渗流微裂隙的全极化探地雷达响应特征研究
A Study on the Characteristics of Full-polarimetric Ground Penetrating Radar Signals from Fractures with Fluid Flow under Different Measurement Angles
摘要
Abstract
The fractures with fluid flow will lead to the damage of rock cave artifacts and the detection of millimeter-scale fractures is a challenge in artifact conservation.The fluid flow in fractures and the infiltration in surrounding rocks based on hydrological modeling are simulated first in this paper.Based on the results,electric permittivity and conductivity models at different time lapse are established,and a series of models with different rotation angles are generated through coordinate rotation for full-polarimetric ground penetrating radar(FP-GPR)simulations.Subsequently,the relationships between H,α,Ps,Pd,and Pv parameters and measurement angles and infiltration time are analyzed.The results indicate that α,Ps and Pd have good variation consistency with infiltration time,while H and Pv do not show a significant relationship with the infiltration time.In addition,the measurement an-gle has significant impacts on the five parameters at the beginning of infiltration,which is related to the frequency of the adopted e-lectromagnetic waves.The research results provide important theoretical support and technical guidance for the use of time-lapse FP-GPR to detect fractures with fluid flow in field cases.关键词
全极化探地雷达/时移测量/测量角度/渗流裂隙/水文模拟/目标分解Key words
full-polarimetric ground penetrating radar/time-lapse measurement/measurement angles/fractures with fluid flow/hydrological modeling/target decomposition分类
信息技术与安全科学引用本文复制引用
董泽君,冯晅,周皓秋..不同测量角度下渗流微裂隙的全极化探地雷达响应特征研究[J].现代雷达,2023,45(12):15-23,9.基金项目
国家重点研发计划(2021YFC1523401) （2021YFC1523401）
国家自然科学基金资助项目(42304157) （42304157）
国家重点研发计划(2022YFC3003402) （2022YFC3003402）
近地面探测技术重点实验室资助项目(6142414211606) （6142414211606）
吉林省科技发展计划资助项目(20220101148JC) （20220101148JC）
