TY  - BOOK
AU  - ADEBAMI, Teminijesu Victor
TI  - Mapping of Gas Pipeline Using Integrated Geophysical Methods (Ground penetrating radr, Magnetic Method, Gravity and 2D ERT) at the Frontage of Mountain Top University Main Gate
PY  - 2021///
CY  - Ibafo
PB  - Geophysics
KW  - Applied science
KW  - Geophysics
N2  - ABSTRACT
On two occasions, the pipe conveying gas along Lagos - Ibadan expressway has been damaged 
by the construction crew at the Mowe to Wawa axis corridor of the road which shows that there is 
no knowledge of the location of the buried pipe. This research was therefore carried out at the 
frontage of Mountain Top University main gate to provide information about the location and
depth of the gas pipeline using integrated geophysical approach comprising Ground Penetrating 
radar (GPR), 2D Electrical Resistivity Imaging (ERI), Magnetic and Gravity methods. The gas 
pipe was characterised by hyperbolic signature on the 2D GPR sections. Low magnetic 
susceptibility was observed across the magnetic profiles. The pipe was characterised by high 
bouguer anomaly on the gravity map and relatively high electrical resistivity signatures on the 2D 
ERT methods. The anomalies associated with the pipe on each of the geophysical methods was 
contoured and plotted on the map of the area from which the path of the pipe has been deduced 
and all the geophysical methods have shown same alignment. GPR and 2D ERT methods have 
delineated the pipe at depth range of 0.4 m to 2.76 m and 0.4 m to 2.2 m respectively across the 
investigated area. Magnetic and gravity methods mapped the pipe at a depth range of 0.5 m to 2.9
m and 0.3 m to 1 m respectively. It can be concluded that all the geophysical methods have mapped 
the pipe with diagnostic response where the depth of burial of the pipe is relatively shallow.
However, the sensitivity of gravity method to the pipe diminishes with increasing overburden 
which can be observed on the 2D ERT due to poor resolution at depth. Geophysical survey should 
be carried out in order to generate maps of buried utilities along proposed expansion so that future 
damages can be averted

ER  -