Scope of Work:
GPR survey execution for mapping underground utilities to prevent damage of pre-existing utilities during reconstruction works
Location:
Juhu lane, Mumbai, India.
Client:
Drshan Developers Pvt. Ltd. (Dheeraj Realty)
Equipment:
GSSI SIR-3000 equipped with 200 MHz and 400 MHz antenna
Challenges:
congested lane leading to non- uniform data collection
Summary:
The GPR survey has been carried out at Juhu Lane in Mumbai. The total area is surveyed
in two different sites of area around 6000m2. The scope of work includes the mapping of
possible underground utilities upto the depth of around 5-6 m using non-destructive Ground
Penetrating Radar technology. The purpose of the execution of GPR survey is to plan the
diversion of existing utilities for proper execution of proposed residential building development
project. Considering the client's requirements and the expected depth of the utilities, the area
has been surveyed using 400 MHz and 200 MHz center frequency antennas mounted with SIR
3000 GPR system to cover the depth upto 5-6 m with fair resolution. The purpose of the survey was to map all the underground
utilities viz. cables, water lines, gas lines, sewer line etc. upto the depth of 5-6 m using non-
destructive technology (GPR). The whole data is collected depending on the site condition
and accessibility of area. Numerous parallel profiles have been collected across the width as
well as along the length of the road at variable spacing. Overall eight utilities are expected to exist along the Juhu Lane. Several higher reection points are also marked in the drawing.
However, no utility is found to exist at a depth greater than 2.3m.
