Underground Utility Mapping Using GPR At Chennai, Tamil Nadu

 

Scope of Work:

The scope of project is to map the depth and alignment of already existing pipelines along the proposed road stretch, up to depth of around 3m using non-destructive Ground Penetrating Radar technology.

Location:

Chennai, Tamil Nadu, India.

Client:

Geokno India Pvt. Ltd.

Equipment:

GSSI SIR-4000 equipped 400 MHz antenna.

Challenges:

Heavy Traffic, site near sea shore, language barrier

Summary:

The utility mapping using GPR survey has been carried out at three proposed different locations in chennai. These locations includes road stretches in front of Pachayappa metro station, Nehrupark metro station and in Tambaram area. The scope of project is to map the existing underground utilities along the proposed routes upto depth of 3 m using non-destructive Ground Penetrating Radar technology. The purpose of the survey is to scan the proposed sites to map underground existing pipeline services, cables, etc. Considering the client's requirements and the expected depth of the utilities, the area has been surveyed using GPR technology by 400 MHz center frequency antenna mounted with SIR 4000 GPR system to cover the depth up to 3m with fair resolution. Conventional processing of the raw data is performed using commercial software RADAN7. A plan view along with sectional views have been generated with marked identified utilities. The located utilities were differentiated as metallic and non-metallic and classified as per ASCE standards.