Integrity inspection of main access tunnel using ground penetrating radar

Global Congress on Construction, Material and Structural Engineering 2017

材料科学;土木建筑工程

Ismail, M.A.^1 ; Abas, A.A.^1 ; Arifin, M.H.^2 ; Ismail, M.N.^3 ; Othman, N.A.^3 ; Setu, A.^3 ; Ahmad, M.R.^1 ; Shah, M.K.^1 ; Amin, S.^1 ; Sarah, T.^1

Industrial Technology Division, Malaysian Nuclear Agency, Bangi, Selangor, Kajang

43000, Malaysia^1

Geology ProgrammeSchool of Environmental Sciences and Natural Resources, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, Selangor

43600, Malaysia^2

TNB Research SDN. Bhd., Lorong Ayer Itam, Kawasan Industri Penyelidikan, Selangor, Kajang

43000, Malaysia^3

关键词: Geosciences;    GPR antenna;    Ground Penetrating Radar;    Ground penetrating radar (GPR);    Transmitted waves;    Underground tunnels;    Wheel encoders;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/271/1/012088/pdf
DOI  :  10.1088/1757-899X/271/1/012088

来源: IOP

【 摘 要 】

This paper discusses the Ground Penetrating Radar (GPR) survey performed to determine the integrity of wall of tunnel at a hydroelectric power generation facility. GPR utilises electromagnetic waves that are transmitted into the medium of survey. Any reflectors in the medium will reflect the transmitted waves and picked up by the GPR antenna. The survey was done using MALA GeoScience RAMAC CUII with 250MHz antenna. Survey was done on the left, the crown and the right walls of the underground tunnels. Distance was measured using wheel encoders. The results of the survey is discussed in this paper.