Delhi-Varanasi High-Speed Corridor: Ground Survey Conducted Through Laser Technique

Delhi-Varanasi High-Speed rail corridor: The light detection and ranging survey (LiDAR) survey for the proposed Delhi-Varanasi high-speed rail corridor was conducted on January 10 from Greater Noida, where a helicopter fitted with an aerial LiDAR and imagery sensors took the first flight and captured the data related to the ground survey. The National High-Speed Rail Corporation Limited (NHSRCL), responsible for executing the bullet train project in the country, is adopting light detection and ranging survey technology, that provides all ground details and data in three-four months, which otherwise takes 10-12 months. The LiDAR survey is a technique that uses laser enabled equipment mounted on a helicopter. (Also Read: Delhi-Varanasi High-Speed Corridor: Laser Technique Adopted For Ground Survey )

According to NHSRCL, the ground survey is a crucial activity for any linear infrastructure project as the survey provides accurate details of areas around the alignment. The technique uses a combination of laser data, GPS data, flight parameters, as well as actual photographs to provide accurate survey data.

The aerial LiDAR survey technique was adopted for the Mumbai-Ahmedabad high-speed rail corridor due to its high accuracy, which was the very first time when the method was utilized for any railway project in the country. The data provided through the LiDAR technology can be useful for several projects including surface transport, roads, irrigation, landslides, canals, city planning, etc. In order to provide clear pictures of the structures, trees, and other minute ground details, 60-megapixel cameras are being used for the LiDAR survey.
 

Delhi-Varanasi High-Speed rail corridor - top features:

• The detailed project report (DPR) for the Delhi Varanasi high-speed rail corridor was submitted to Ministry of Railways on October 29, 2020.
• According to the proposed plan, the Delhi-Varanasi rail corridor will connect the national capital with cities such as Agra, Mathura, Prayagraj, Lucknow, Etawah, Varanasi, Ayodhya, Raebareli, and Bhadohi.
• The main corridor from Delhi to Varanasi, approximately 800 km, will also be connected to Ayodhya. The stations of the corridor will be decided after consultations with the government.
• The rail route will also connect the upcoming Jewar international airport in Gautam Buddha Nagar District of Uttar Pradesh.