ABC Techno Labs 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

Can you explain how geological processes shape the Earth's surface?

• Geological processes like erosion, weathering, and tectonic activity shape the Earth's surface over time

• Erosion can create valleys and canyons, while weathering breaks down rocks into smaller pieces

• Tectonic activity can cause earthquakes and create mountains and other landforms

• Volcanic activity can also shape the Earth's surface by creating new land and

Groundwater is crucial for human and ecosystem survival. Water levels in wells rise and fall due to various factors. Artesian well water is from a confined aquifer. Groundwater is not always clean. Water can flow out of a hill due to natural springs. Porosity, permeability, water table, saturated zone, and unsaturated zone are important groundwater concepts.

• Groundwater is essential for human and ecosystem survival

• Water...read more

RMR value is calculated by assigning scores to various parameters related to rock mass characteristics.

• RMR stands for Rock Mass Rating.

• It is calculated by assigning scores to six parameters: uniaxial compressive strength, rock quality designation, spacing of discontinuities, condition of discontinuities, groundwater conditions, and orientation of discontinuities.

• The scores for each parameter are added up to get the RMR...read more

Various instruments are used in tunnel excavation, including drilling machines, blasting equipment, and tunnel boring machines.

• Drilling machines are used to create holes in the rock or soil for explosives.

• Blasting equipment is used to break up the rock or soil.

• Tunnel boring machines are used to excavate tunnels without the need for explosives.

• Surveying instruments are used to ensure the tunnel is being excavated in the...read more

RQD stands for Rock Quality Designation, a measure of rock mass quality used in geology and engineering.

• RQD is calculated by measuring the percentage of intact rock pieces longer than 10 cm in a drill core sample.

• It is used to assess the strength and stability of rock masses for engineering projects such as tunnels, dams, and foundations.

• Higher RQD values indicate better rock quality and greater potential for stability...read more