Oil And Natural Gas Corporation Geologist Interview Questions and Answers

Rock bolting is a technique used in geotechnical engineering to reinforce rock mass by inserting steel bolts into the rock.

• Rock bolting is used to provide support to unstable rock formations.

• It involves drilling holes into the rock and inserting steel bolts into them.

• The bolts are then anchored into the rock using grout or resin.

• Rock bolting is commonly used in mining, tunneling, and slope stabilization projects.

• It hel...read more

Grouting is a process of injecting a fluid material into the ground to fill voids or fractures.

• Used in construction to strengthen soil or rock formations

• Can be used to seal leaks in underground structures

• Materials used include cement, bentonite, and chemical grouts

Shortcrete is a type of concrete that is sprayed onto surfaces using a high-pressure hose.

• Also known as shotcrete

• Used in construction for creating walls, pools, and tunnels

• Can be applied to vertical or overhead surfaces

• Requires less formwork than traditional concrete

• Can be reinforced with steel fibers or mesh

• Used in soil stabilization and slope protection

• Commonly used in mining and tunneling projects

NATM is a tunneling method that uses the surrounding rock mass to support the tunnel. RMR and Q-value are rock mass classification systems. Portal stability is the stability of the entrance to a tunnel. Rock bolts are used to reinforce the rock mass.

• NATM stands for New Austrian Tunneling Method and is a tunneling method that relies on the strength of the surrounding rock mass to support the tunnel.

• RMR (Rock Mass Rating...read more