Geology Engineering

What is the main purpose of conducting a ground investigation for a construction project?

• To find the color of the rocks

• To understand the site’s suitability for building
  
  

• To estimate the cost of materials
  
  

• To identify local flora and fauna

Which of the following is a type of rock mass failure caused by excessive shear stress?

• Tensile failure

• Shear failure

• Compression failure

• Spalling failure

What is the purpose of Rock Quality Designation (RQD) in geotechnical engineering?

• To measure the hardness of rock

• To assess the quality of rock based on core recovery

• To estimate the groundwater level

• To classify the soil type

Which of the following geological features can lead to rock mass instability?

• Joints

• Crystals

• Fossils

• Gravel

What does a "joint" in a rock mass refer to?

• A layer of sedimentary rock

• A fracture in the rock without displacement

• A bent layer of rock

• A fault line with movement

How does shotcrete help in rock mass stabilization?

• It prevents water flow through the rock

• It increases the compressive strength of the rock

• It acts as a surface cover to protect the rock from weathering

• It fills cracks in the rock

Which of the following is a method used to assess the in-situ stresses in rock mass?

• Borehole drilling

• Flat Jack Testing

• Geophysical surveys

• Core sampling

What does a "fault" in a rock mass involve?

• A continuous layer of rock

• A sudden shift in rock layers

• A bend in the rock due to pressure

• A fracture with movement of rock blocks

Which method is commonly used to reinforce rock masses and prevent rock failure in tunnels?

• Shotcrete

• Grouting

• Rock bolts

• Both B and C

What is a common consequence of excavation on a rock mass?

• Increased stability

• Stress redistribution leading to possible failure

• Decreased temperature of the rock

• Increase in mineral content