This paper illustrates the importance and necessity of underground cavity detection in city road, briefly generalizes the foremost technologies at present and their classification and characteristic. Focuses on ground-penetrating radar technology status, problems and future trends.%阐述了城市道路地下空洞探测的必要性和重要意义,简要概述了目前城市道路地下空洞探测的主要方法及其分类、特点;重点介绍了探地雷达技术的应用现状、存在问题和未来的发展趋势.
展开▼