【摘要】 地质雷达技术及装备引进我国大概有20年的经历,在这期间地质雷达技术以其对场地的适应性强、有效的探测深度、高于其它物探方法的探测精度、实时提供图像清晰直观的探测图像,现场对探测结果进行评价和非破坏性的无损测试方式的特点在交通、水利水电、市政建设和工程质量检测领域得到了广泛应用。本文对此进行了简要的回顾,在总结地质雷达特点的基础上,就其有效探测深度进行了讨论,指出地质雷达的探测深度与天线频率有关,更与地下地质介质的物理性质存在密切的关系,因此,工程物探依然要与地质相结合。并以一个城市地下管道的探测实例来说明地质雷达探测工作的效率和探测结果的可靠性。更多还原

【Abstract】 Ground penetrating radar (GPR) technique has been introduced to China for about twenty years. During this period,it has been widely used in transportation,hydroelectric field,civil engineering and construction quality checking etc. in terms of its merits,for instance suitability to site,effective depth of detective ability,higher detective accuracy than others and nondestructive property. This paper discusses the effective depth of defective ability,on the basis of summary to the characteristics of GPR,and points out that the detective depth is not only associated with antenna frequency,but also more closely with physical nature of geologic media subsurface. Therefore,engineering geophysical detection,in combination with geological information,is the only satisfactory way to solve problems. This paper indicates the defective efficiency and availability of the defective result through an actual pipeline in a city.更多还原