中文摘要：

路面沉陷变形会导致路面平整度变差,引发严重的交通事故。联合采用探地雷达法、地震映像法和瞬态瑞雷波法,对某高速公路路面沉陷变形区域进行综合无损检测,检测结果表明：探地雷达法精度高、效率高,但有效探测深度较浅,适宜快速探测公路结构层中的裂缝、破碎破损、沉陷变形,以及路基中的脱空、空洞等隐蔽病害的分布情况;地震映像法探测深度大、效率低,适宜探测地下介质的纵、横向变化情况,判断路基下方是否存在滑动面以及是否发生侧向滑移;瞬态瑞雷波法获得的面波速度可以直接反映了地层的＂软＂、＂硬＂程度,用以判断地层中是否存在软弱夹层或软弱地基。各检测方法之间相互验证、相互补充,能从不同深度、多个角度,更全面地揭示路面沉陷变形的现状、成因和发展趋势,为采取针对性的治理措施提供技术支撑。

英文摘要：

Pavement deformation will reduce the flatness of road surface and cause serious traffic accidents.This paper employs comprehensively the methods of ground penetrating radar,seismic image and transient rayleigh wave to do nondestructive testing for sinking and deforming area of a certain expressway pavement.Testing result shows：the method of ground penetrating radar is high in accuracy and efficiency,but is relatively shallow in effective detecting depth.Therefore,it is suitable for quick exploration of the crack,crush-ing and breakage,subsidence and deformation in structural layer of highway,and for exploration of distribution of concealed diseases like disengagement and cavity in subgrade.Seismic imaging method is fit for detecting the change conditions of vertical and lateral variation of media subsurface and can judge whether there is sliding surface or generates lateral slipping or not;surface wave collected by transient Rayleigh wave method reflects directly the soft and rigid degree of stratum,which is used to judge whether there is soft rock strata or soft foundation.Each testing method verifies and complements with each other and thus the current status,causes and developing trend of pavement subsidence and deformation can be disclosed more generally from different depths and various angles,providing technical support for the specific treatment measures.