Identifikasi Kebocoran Pipa Menggunakan Metode Ground Penetrating Radar

Bakti, Audi Dian (2021) Identifikasi Kebocoran Pipa Menggunakan Metode Ground Penetrating Radar. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Metode Ground Penetrating Radar (GPR) atau biasa disebut georadar, sebagai metode investigasi geofisika non destruktif yang menggunakan gelombang elektromagnetik. Metode ini banyak digunakan untuk menentukan kondisi di bawah permukaan, seperti pemetaan struktur dan litologi bawah permukaan atau benda yang terkubur. Pada penelitian ini tujuan utamanya adalah pengukuran GPR menggunakan antena Geoscanners GSSI 270 MHz dilakukan untuk mengidentifikasi kebocoran pipa dari citra GPR. Data GPR diolah menggunakan matGPR berbasis MATLAB. Data GPR pada setiap lintasan diproses menggunakan serangkaian filter dan penguatan telah dilakukan seperti Adjust Signal Position, Remove DC, Dewow, Inverse Amplitude Decay, Remove Global Background, Karhunen-Loeve Filter, kemudian time to depth conversion dengan parameter yang telah disesuaikan. Hasil ini menunjukkan bahwa penggunaan filter ini mampu menunjukkan anomali yang diduga adalah kebocoran pipa dengan menggunakan pemodelan 2 dimensi. Dari hasil ini didapatkan bahwa data GPR dapat diinterpretasikan yang menunjukkan adanya kebocoran pipa bawah tanah di wilayah studi dengan adanya difraksi (anomali) dengan nilai koefisien dielektrik (ε_r) sebesar 25.
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The Ground Penetrating Radar (GPR) method, commonly called Georadar, as a non-destructive geophysical investigation method that uses electromagnetic waves. This method is widely used to determine conditions under the surface such as mapping structures and subsurface lithology or buried objects. In this study, the main objective is GPR measurement using Geoscanners GSSI 270 MHz antenna is conducted to identify and extract features from GPR images of the pipeline leakage. The GPR data were initially processed using matGPR based on MATLAB. GPR data on each measuring line is processed first, a series of filters and gaining have been conducted such as Adjust Signal Position, Remove DC, Dewow, Inverse Amplitude Decay, Remove Global Background, Karhunen-Loeve Filter, then time to depth conversion with adjusted parameters. These results show that the utilization filter is capable of highlighting the anomalies of the pipeline leakage, in an intuitive manner, which can be identified by non-highly qualified personnel, using the 2D models. From the result of parameter analysis in processing data, found that the GPR data can be interpreted which show the underground pipeline leak in the study area with the presence of diffraction signatures(anomalies) with dielectric coefficient (ε_r) value of 25.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Ground Penetrating Radar, matGPR, Pipeline
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA1573 Detectors. Sensors T Technology > TA Engineering (General). Civil engineering (General) > TA1637 Image processing--Digital techniques
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Physics > 45201-(S1) Undergraduate Thesis
Depositing User:	Audi Dian Bakti
Date Deposited:	09 Mar 2021 08:30
Last Modified:	09 Mar 2021 08:30
URI:	http://repository.its.ac.id/id/eprint/83789

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