探地雷达在城市地铁沿线空洞探测中的技术方法

THE TECHNICAL METHODS FOR APPLYING GPR TO UNDERGROUND CAVITY DETECTION ALONG THE SUBWAY

地下空洞探测是地铁施工中的重要检测内容之一,探地雷达具有在城市道路上快速检测的特点而被广泛应用。以北京某地铁沿线的空洞探测为例,着重讨论地下空洞的赋存空间、探地雷达探测空洞的技术方法和常见异常的特征等问题,分析了城市环境中探地雷达剖面上的常见异常,为开展该项工作提供一定的借鉴。

Underground cavity detection is one of the important detection contents in subway construction, and GPR can help us detect city roads rapidly, so it has been used widely. This paper deals with the existent space of the underground cavity , the technical meth-ods for using GPR to detect underground cavities as well as the characteristics of anomalies.