What caused the NHPC tunnel disaster in Sikkim’s Namchi? | Explained

The NHPC tunnel disaster in Sikkim’s Namchi likely resulted from methane gas trapped within the rock, igniting a fatal explosion. Methane, a common gas in geological formations, can accumulate under high pressure and release suddenly, causing such disasters. Understanding this is crucial as it highlights the need for stringent safety protocols in tunnel construction projects, especially in regions with known gas deposits. This incident underscores the importance of advanced geological surveys and risk management to prevent future tragedies in such hazardous environments.