detection and characterization of pipe using time-domain ...€¦ · sr azlim khan bin abdul raof...
TRANSCRIPT
![Page 1: Detection and Characterization of Pipe Using Time-Domain ...€¦ · Sr Azlim Khan bin Abdul Raof Khan Dept. of Survey and Mapping Malaysia (JUPEM) azlim@jupem.gov.my 1 Presented](https://reader033.vdocument.in/reader033/viewer/2022060803/60872e21ac03b24da93353c5/html5/thumbnails/1.jpg)
Detection And Characterization of Buried
Objects Using Seismic Reflection Technique
Sr Azlim Khan bin Abdul Raof Khan
Dept. of Survey and Mapping Malaysia (JUPEM)
1
Presented at th
e FIG Congress 2018,
May 6-11, 2018 in
Ista
nbul, Turkey
![Page 2: Detection and Characterization of Pipe Using Time-Domain ...€¦ · Sr Azlim Khan bin Abdul Raof Khan Dept. of Survey and Mapping Malaysia (JUPEM) azlim@jupem.gov.my 1 Presented](https://reader033.vdocument.in/reader033/viewer/2022060803/60872e21ac03b24da93353c5/html5/thumbnails/2.jpg)
1. Brief Conclusion
2. Introduction
3. Methodology
4. Result
5. Conclusion
Presentation Outline
2
![Page 3: Detection and Characterization of Pipe Using Time-Domain ...€¦ · Sr Azlim Khan bin Abdul Raof Khan Dept. of Survey and Mapping Malaysia (JUPEM) azlim@jupem.gov.my 1 Presented](https://reader033.vdocument.in/reader033/viewer/2022060803/60872e21ac03b24da93353c5/html5/thumbnails/3.jpg)
Brief Conclusion
Seismic reflection technique is consider acceptable
as an alternative technique for underground pipe
detection
3
![Page 4: Detection and Characterization of Pipe Using Time-Domain ...€¦ · Sr Azlim Khan bin Abdul Raof Khan Dept. of Survey and Mapping Malaysia (JUPEM) azlim@jupem.gov.my 1 Presented](https://reader033.vdocument.in/reader033/viewer/2022060803/60872e21ac03b24da93353c5/html5/thumbnails/4.jpg)
Introduction
in Sisli, Istanbul
pipe
Land Slide – 2008
Bukit Antarabangsa
Malaysia 4
![Page 5: Detection and Characterization of Pipe Using Time-Domain ...€¦ · Sr Azlim Khan bin Abdul Raof Khan Dept. of Survey and Mapping Malaysia (JUPEM) azlim@jupem.gov.my 1 Presented](https://reader033.vdocument.in/reader033/viewer/2022060803/60872e21ac03b24da93353c5/html5/thumbnails/5.jpg)
GPR has some limitations in detecting underground objects
GROUND PENETRATING RADAR
(GPR)
5
![Page 6: Detection and Characterization of Pipe Using Time-Domain ...€¦ · Sr Azlim Khan bin Abdul Raof Khan Dept. of Survey and Mapping Malaysia (JUPEM) azlim@jupem.gov.my 1 Presented](https://reader033.vdocument.in/reader033/viewer/2022060803/60872e21ac03b24da93353c5/html5/thumbnails/6.jpg)
Methodology
6
![Page 7: Detection and Characterization of Pipe Using Time-Domain ...€¦ · Sr Azlim Khan bin Abdul Raof Khan Dept. of Survey and Mapping Malaysia (JUPEM) azlim@jupem.gov.my 1 Presented](https://reader033.vdocument.in/reader033/viewer/2022060803/60872e21ac03b24da93353c5/html5/thumbnails/7.jpg)
7
![Page 8: Detection and Characterization of Pipe Using Time-Domain ...€¦ · Sr Azlim Khan bin Abdul Raof Khan Dept. of Survey and Mapping Malaysia (JUPEM) azlim@jupem.gov.my 1 Presented](https://reader033.vdocument.in/reader033/viewer/2022060803/60872e21ac03b24da93353c5/html5/thumbnails/8.jpg)
Result
Without Buried
Pipe
With Buried
Pipe
8
![Page 9: Detection and Characterization of Pipe Using Time-Domain ...€¦ · Sr Azlim Khan bin Abdul Raof Khan Dept. of Survey and Mapping Malaysia (JUPEM) azlim@jupem.gov.my 1 Presented](https://reader033.vdocument.in/reader033/viewer/2022060803/60872e21ac03b24da93353c5/html5/thumbnails/9.jpg)
9
Without B
uried
Pip
e
With B
uried
Pip
e
![Page 10: Detection and Characterization of Pipe Using Time-Domain ...€¦ · Sr Azlim Khan bin Abdul Raof Khan Dept. of Survey and Mapping Malaysia (JUPEM) azlim@jupem.gov.my 1 Presented](https://reader033.vdocument.in/reader033/viewer/2022060803/60872e21ac03b24da93353c5/html5/thumbnails/10.jpg)
seismic reflection technique is consider
acceptable for the buried pipe detection and
characterisation and can be use for
underground pipe detection.
Conclusion
Further studies are still needed for this
technique/method to be used on detecting
other type of underground utilities regardless
of what they were made of, such as fiber
optics and power cables.10
![Page 11: Detection and Characterization of Pipe Using Time-Domain ...€¦ · Sr Azlim Khan bin Abdul Raof Khan Dept. of Survey and Mapping Malaysia (JUPEM) azlim@jupem.gov.my 1 Presented](https://reader033.vdocument.in/reader033/viewer/2022060803/60872e21ac03b24da93353c5/html5/thumbnails/11.jpg)
![Page 12: Detection and Characterization of Pipe Using Time-Domain ...€¦ · Sr Azlim Khan bin Abdul Raof Khan Dept. of Survey and Mapping Malaysia (JUPEM) azlim@jupem.gov.my 1 Presented](https://reader033.vdocument.in/reader033/viewer/2022060803/60872e21ac03b24da93353c5/html5/thumbnails/12.jpg)
𝑍= 𝜌·𝑉
Z = acoustic impedance
𝜌 is defined as the density
𝑉 is the acoustic velocity.
R = reflection coefficient of normal incidence
Dvorkin J., Gutierrez M. A., and Grana D., 2014, Seismic
reflections of rock properties. Cambridge University Press.