Maharashtra Rail Infrastructure Development Corporation Interview Questions, Process, and Tips

NATM stands for New Austrian Tunneling Method, a technique used in underground construction and tunneling.

• NATM is a tunneling method that originated in Austria in the 1960s.

• It involves excavating the tunnel while providing temporary support using rock bolts, shotcrete, and steel arches.

• The method relies on the inherent strength of the surrounding rock mass for long-term stability.

• NATM allows for flexibility in tunnel d...read more

Himalayan tunneling faced challenges like difficult terrain, high altitude, and geological instability.

• Difficult terrain made it hard to access the tunneling site.

• High altitude caused problems like altitude sickness and lack of oxygen.

• Geological instability led to frequent rockfalls and landslides.

• The presence of fault zones and water ingress also posed challenges.

• Construction of access roads and transportation of equi...read more