Picture used for representational purpose. (Photo: DC/File)
Chennai: To rid itself of the problem of road erosion, the Chennai corporation has opted for a system to detect faulty road compaction by analysing the surface and sub-surface.
The project, ‘Pavement monitoring and management solution using surface and sub-surface pavement analysis’ will use Light Detection and Ranging (LiDAR ), a remote sensing technology that measures distance by illuminating a target with a laser and analysing the reflected light to analyse the road surface.
According to corporation officials, the road surface will be modelled in 3D, using the LiDAR system and the model will be used for surface analysis for evenness, rutting, surface cracks and potholes. This activity will be repeated bi-annually and the pavement information system will be updated with the latest changes. The corporation has invited interested firms to take up the project.
The system will help sort out faulty road compaction in sub-surface which is one of the primary reasons for recurring potholes even after top surface replacement and enable appropriate action to continuously maintain the pavement in the best condition.
Based on the collected data of the 3D road profile, the consultant has to deliver a complete proposal for pavement management measures for the next three years with which the corporation would make appropriate modifications in road laying methods in the future.
A corporation official pointed out that some alterations had to be made in the system before it was implemented. "The method requires a few technical changes. Once done, it will come into use," he added.