基于雷达波和瑞利波综合物探探测道路地下病害研究

Research on Underground Pathological Conditions of Roads Based on Comprehensive Geophysical Exploration Using Radar Waves and Rayleigh Waves

摘要: 城市建设过程中，经常存在基坑与道路交叉施工，基坑开挖导致土体的卸载会使周边道路出现不均匀沉降，道路施工过程中有大量的重载作用，可能会使道路和基坑出现功能性和一定的结构性的损坏。鉴于此，依托杭州市某道路与09地块基坑交叉施工工程，在介绍雷达波与瑞利波测试原理的基础上，采用雷达波和瑞利波两种综合物探法探测基坑附近道路地下可能存在的病害，确定病害的分布情况和规模。结果表明：道路下方存在一定程度的脱空和土体松散，二者的相互验证和补充，表明探地雷达和面波法相结合能够探测道路地下病害，为后继城市道路的风险分析提供量化指标。

Abstract: In the process of urban construction, there is often cross construction between foundation pits and roads. Excavation of foundation pits can lead to uneven settlement of surrounding roads due to soil unloading. During road construction, there is a significant amount of overload, which may cause functional and structural damage to certain degree of the roads and foundation pits. In view of this, based on the construction project of a certain road in Hangzhou and the intersection pit of 09 parcel, the comprehensive geophysical method is used to detect underground road diseases. The testing principles of radar waves and Rayleigh waves are introduced. Then the combined use of radar waves and Rayleigh waves for geophysical exploration is used to detect possible underground damage to the roads near the foundation pit, and then determine the distribution and scale of the disease. There is a certain degree of voiding and loose soil beneath the road. It can be seen that the combination of ground penetrating radar and surface wave method can detect underground road diseases, providing quantitative indicators for subsequent risk analysis.