Cavity Detection of Chamber by GPR

Lee, Hyun-Ho

doi:10.11112/jksmi.2016.20.2.086

Cited by 2 publications

(1 citation statement)

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“…(3,4) Therefore, it is possible to obtain information on the inside of structures and the ground quickly and economically, so its application targets in various fields include the detection of underground buried objects, cavities, and abnormalities in tunnels. (5)(6)(7) Compared with other survey methods, the GPR survey rapidly obtains very accurate results, so such results are used for the safety diagnosis of structures. In Korea, the GPR survey has been mainly applied to the rear cavities of tunnels or to determine the presence and location of buried objects.…”

Section: Introductionmentioning

confidence: 99%

Facility Monitoring and Construction of Geospatial Information Using Latest Exploration Technology

Park¹,

Lee²

2022

Sensors and Materials

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A method that can measure the road density in the field is very effective in managing and maintaining road quality. However, the conventional density measurement method has a disadvantage that it is difficult to use in the field because it requires much time. In this study, road density measurement and underground facility exploration were performed using groundpenetrating radar (GPR). A value of 2.1-3.1 g/m 3 was obtained through a road density test of the study site by measuring the road density. A pavement density profiler (PDP) is very efficient because values in the field can be checked more simply than by the conventional method of calculation through an indoor experiment. In addition, for exploring underground facilities, the water pipes of the study site were measured and their measured values were compared with the actual measured values. The accuracy of the underground facility exploration using GPR was 0.06-0.19 m. This means that the criteria for surveying underground facilities are satisfied. The use of GPR for underground facility surveying can enable the exact location and depth of piping to be recorded, which can greatly increase the efficiency of the work involved.

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Section: Introductionmentioning

confidence: 99%