CAJ | 학술논문

应用基于时间域有限差分法模拟软件GPRMax2D，对高铁隧道衬砌典型的不良情况，如厚度不足、空洞和钢筋布置不合理等进行了正演模拟，得到了隧道衬砌典型不良情况的正演模拟雷达图像。结合某高铁隧道工程实际检测得到的雷达图像，对两者图像作了对比分析，总结得到了隧道衬砌不良情况雷达图像的特征规律，完善了探地雷达图像资料特征解释库，提高了识别高铁隧道衬砌典型不良情况雷达图像的可信度，为高速铁路隧道的无损检测提供了有效的依据。
응용기우시간역유한차분법모의연건GPRMax2D，대고철수도츤체전형적불량정황，여후도불족、공동화강근포치불합리등진행료정연모의，득도료수도츤체전형불량정황적정연모의뢰체도상。결합모고철수도공정실제검측득도적뢰체도상，대량자도상작료대비분석，총결득도료수도츤체불량정황뢰체도상적특정규률，완선료탐지뢰체도상자료특정해석고，제고료식별고철수도츤체전형불량정황뢰체도상적가신도，위고속철로수도적무손검측제공료유효적의거。
The high-speed railway tunnel lining always suffers from some adverse conditions, such as thickness lack, cavity, and un-reasonable reinforcement arrangement. In this paper, simulation of the typical adverse lining condition was introduced by using the sim-ulation software GPRMax2D based on finite-different time-domain method ( FDTD) , and the forward simulation radar images of the typ-ical adverse lining condition were obtained. In combination with the typical radar images from detection examples of a high-speed rail-way tunnel, a comparative analysis was made between them, the features and rules of the adverse lining condition were summarized, the ground-penetrating radar data feature library was improved, and the credibility of recognizing typical adverse conditions of high-speed railway tunnel was increased. These results provide the effective basis for the high-speed railway tunnel non-destructive testing.