查明沥青混凝土机场跑道面层脱空范围和程度,对实施道面维护保养和保障跑道飞行安全十分重要。这里运用基于时间域有限差分法(FDTD)的 GPRMax2D,对面层脱空的探地雷达反射剖面特征进行了数值模拟分析。通过对数值模拟数据、探地雷达实测剖面以及钻孔验证结果的对比分析,建立了面层脱空推断解释分类模型,获得了具有合理准确度和高可靠性的推断解释结果,认为探地雷达是一种能用于沥青混凝土机场跑道面层脱空检测的快速、无损、可靠的技术手段。%It is important to find out the locations and grades of asphalt overlay debonding on runway for airfield pavement maintenance and the flight safety.In this paper,using GPRMax2D based on the method of the finite difference time domain method (FDTD),simulating the ground penetrating radar (GPR)reflection profiles characteristics from debonded locations. According to the comparative analysis with numerical simulation data,GPR survey profile and drilling datum,establishes an in-terpretation classification model of asphalt overlay debonding,that results of inference and interpretation based on the GPR method with a reasonable accuracy and high reliability,is a rapid,nondestructive,reliable technology can be used for detecting asphalt overlay debonding on runway.
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