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Excavation Methods: Drilling Procedures

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Questions and Answers

What are the two types of drilling procedures classified by?

Equipment cost
Manual and mechanized (correct)
Drilling locations
Drilling parameters

What is the main advantage of bench drilling?

Provides a free face for material projection (correct)
Works well with manual drilling
Suitable for underground operations only
Allows for horizontal blastholes

What is the trend in drilling for drifting and tunnelling?

Towards smaller drilling equipment
Towards horizontal blastholes
Towards total mechanization (correct)
Towards manual drilling

What type of drilling is used in small operations?

Manual drilling (A) Signup and view all the answers

What is the purpose of an initial cavity in drilling for drifting and tunnelling?

To direct the rest of the fragmented rock (D) Signup and view all the answers

What is production drilling used for?

Fragmenting rock for further processing (C) Signup and view all the answers

What term is used in mining operations to describe the labor of ore extraction?

Underground Drilling (C) Signup and view all the answers

What method is used for drilling rocks with overburden?

Special drilling with casing (C) Signup and view all the answers

What is the first phase in rock support operations?

Drilling (D) Signup and view all the answers

Why is the long blasthole method still used today?

Because of lack of space in drifts (C) Signup and view all the answers

What is necessary in many underground and civil engineering projects?

Opening raises (A) Signup and view all the answers

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