All the labourers have been safely evacuated from the tunnel of Uttarkashi.

New Delhi:

The Uttarkashi Tunnel Collapse in Uttarkashi, Uttarakhand, has become an example for companies working in various projects across the country. Therefore, it is very important to find out why this accident happened. So that the reasons behind this accident can be known and it can be corrected further. Also, those responsible for this accident can also be punished. Uttarakhand Chief Minister Pushkar Singh Dhami has said that a detailed review of the Silkyara accident will be done. Taking a lesson from this accident, the National Highways Authority of India (NHAI) has decided to audit all 29 under-construction tunnels.

Tunnel experts believe that there should also be a safety audit of railway tunnels and hydropower tunnels in the country. Tunnel is a risky venture. In such a situation, the government will have to move forward by learning from this incident.

Professor Jagdish Telangrao Sahu of IIT Delhi, a member of the government's expert committee set up to set guidelines for the design and construction of tunnels in the country, told NDTV, "The circumstances under which the Silkyara accident took place have raised many big questions about tunnel construction in the country. We have to pay more attention to site investigation. That is, the place where excavation is being done, it should be found out what kind of rocks are there. What is the structure of these rocks? There are no loose rocks or there are no faults."

"We don't know many things at the time of excavation. All this should be ascertained before digging. All these things should be included in the design input of tunnel construction."

According to experts, questions are also being raised about the safety scale. In this case, the absence of the Escape Tunnel was unfortunate.

What do experts say?
Professor Jagdish Telangrao Sahu told NDTV, "Two aspects are important during the construction of the tunnel. Before digging, you should collect information through non-destructive testing or bore holes through side investigation."

Professor Jagdish Telangrao Sahu says, "If we design with the New Austrian Tunneling Method, then it can also take feedback mechanisms during excavation. In such a situation, if there is a loose rock, then you can modify the design of that place. Feedback is essential in loop tunneling, it is not followed right now."

What does the CM say?
Uttarakhand Chief Minister Pushkar Singh Dhami told NDTV on Wednesday: "The accident will be reviewed. Big tunnels have been built in the state before, but how this accident happened will be reviewed. Whatever shortcomings are found, we will remove them."