高速公路地质雷达探测溶洞成果精度提高方法的探讨

地质雷达(GPR)作为近期发展起来的一种新的地球物理勘探手段，与其他物探仪器相比，具有分辨率高，勘探成本低，速度快等优点，已在高速公路建设中得到广泛应用，但其探测路基下溶洞的精度还有待提高。结合湖南省某高速公路工程的物探与补充钻探资料，详细分析了导致两者存在差异的原因。通过应用现代统计原理，发现两者之间存在线性相关关系，并得到了关系式。为提高地质雷达探测路基下空洞的精度提供了新的途径。

Discussion on Improving Detect Precision of GPR Method in Detecting Karst Cave Under Highway Roadbed

As a new developed physical geography prospect method, g round-penetrating radar (GPR) has some advantages, such as strong resolving pow er, low cost and short time etc and is used widely in the construction of highwa y. B ut its detect precision is expected to be improved. According to the data of phy sical geography prospect and complementarity drilling of a certain highway in Hu n an Province, the difference of the results of two methods is analysed exhaustive ly in this paper. The linear relation is discovered by used contemporary statist ic principle and the equation is found. A new approach is afforded to improving detect precision of GPR in detecting cave under highway roadbed.