【摘要】 岩溶土洞及塌陷严重影响高速公路建设和安全运营,是覆盖型岩溶区高速公路路基面临而且又难以解决的主要岩溶病害问题。本文在桂阳高速公路K 23+100~K 23+190路段利用地质雷达、浅层地震反射法、高密度电阻率法三种常规物探方法对土洞探测进行对比实验,结果表明:地质雷达具有精度和效率高、成本低、成果直观等特点,是探测浅埋藏(<10m)、小尺寸(<3m)土洞的最佳方法。更多还原

【Abstract】 Collapse occurs very frequent in southwest China.Sinkhole happens suddenly and unforeseen,so it is very harmful for the highway construction and run.It is important and urgent to choose a fast and economical and reliable method or incorporated methods to detect the buried cave.Three common geophysic prospecting methods-resistivity sounding and seismic reflection and ground penetrating radar(GPR),had been used in K23+100~K23+190 in Guilin-Yangshuo highway.The result shows GPR is the most efficient and economical and reliable method for the diction of shallow buried(<10m) and small size(<3m) caves.更多还原