The Application Of GPR In Subgrade NDT Research And Disease Treatment

As the national policy of "area" is put forward,the road construction of our country will enter the booming stage,through before we build roads to summarize some experience,the path will appear after building up a series of disease problem,some diseases can't be found in advance,in the event will be arrival traffic inconvenience to people's life,serious point will threaten to people's life and property,based on the research of this paper has carried on the roadbed diseases,and find a reasonable solution.This paper first introduced the test is the development process of groundpenetrating radar technology.And then with the development of science and technology,we found a kind of nondestructive detection technology,can the roadbed disease detection,in view of the roadbed diseases,we use the Italy IDS company production of ground penetrating radar(GPR)to detect the road embankment,Beijing capital international airport,for example,we first to detect road routes,due to the detection of the depth of the different needs of radar antenna frequency is different,choose good antenna,along the route to detect road,by analyzing the profile of GPR concluded,we can analyze the road diseases location and the type of disease.Secondly,to detect road disease,we take some strengthening measures,according to different roadbed diseases,we adopt different repairing technology.Based on G105 line Pingyin county city as an example,this section of the roadbed have not dense disease,according to the characteristics of the project,we use the technology for subgrade of the grouting reinforcement,the way to do this is because the grouting reinforcement technology avoids road excavation,so can quickly to repair roads.Finally,through the engineering practice shows that in the late stage of road maintenance is used in the nondestructive detection technique can quickly,easy to find disease so that both can save to the power,also can prevent the happening of the disaster in advance.Therefore,the use of nondestructive detection technology to find diseases and the new reinforcement technology of roadbed defects reinforcement is a major task,it is important for road maintenance.