Jawaharlal Nehru Technological University Hyderabad
Jawaharlal Nehru Technological University Hyderabad B.Tech II DRILLING AND BLASTING Previous Question Paper (December - 2018 - R16)
Note: This question paper contains two parts A and B. Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 10 marks and may have a, b, c as sub questions.
PART- A
What is meant by explorative drilling?
Answer
Explorative drilling is the process of drilling boreholes into the earth's crust to obtain core samples or cuttings for the purpose of geological mapping, mineral deposit evaluation, and determining the structural integrity of rock formations.
What are the merits and demerits of drilling?
Answer
The merits of drilling include high efficiency in creating precise holes for blasting, ability to reach deep deposits, and versatility across various rock types. The demerits include high capital and operational costs, noise and dust pollution, and the requirement for skilled labor and maintenance.
Define Bit Geometry.
Answer
Sign in to view the complete answer paper.
What is meant by Sensitivity and water resistance?
Answer
Sign in to view the complete answer paper.
Write the composition of Judson powder.
Answer
Sign in to view the complete answer paper.
What are the different blasting accessories?
Answer
Sign in to view the complete answer paper.
Define blown out shot.
Answer
Sign in to view the complete answer paper.
What is meant by charge ratio?
Answer
Sign in to view the complete answer paper.
What is meant by pre- split blasting?
Answer
Sign in to view the complete answer paper.
Write a short note blast design.
Answer
Sign in to view the complete answer paper.
PART-B
Write briefly about borehole logging.
Answer
Sign in to view the complete answer paper.
Explain briefly about double tube core barrel.
Answer
Sign in to view the complete answer paper.
Explain briefly about bore hole deviation.
Answer
Sign in to view the complete answer paper.
What are the factors that influence bore hole deviation?
Answer
Sign in to view the complete answer paper.
What are the operational parameters effecting drilling?
Answer
Sign in to view the complete answer paper.
Explain briefly about rotary drilling.
Answer
Sign in to view the complete answer paper.
Write briefly about economics of drilling.
Answer
Sign in to view the complete answer paper.
What are the mechanical properties that influence drilling?
Answer
Sign in to view the complete answer paper.
Write a short storage and transportation of explosives.
Answer
Sign in to view the complete answer paper.
Write a short note on permitted explosives.
Answer
Sign in to view the complete answer paper.
Explain about Different types of detonators.
Answer
Sign in to view the complete answer paper.
What are the dangers associated with blasting?
Answer
Sign in to view the complete answer paper.
Explain the importance of computer aided blast designing.
Answer
Sign in to view the complete answer paper.
Write a short note on gallery blasting.
Answer
Sign in to view the complete answer paper.
Explain briefly about rock fragmentation.
Answer
Sign in to view the complete answer paper.
What are the factors that influence in generation of fly rock?
Answer
Sign in to view the complete answer paper.
What are the different methods to control fly rock?
Answer
Sign in to view the complete answer paper.
Explain briefly about civil blasting techniques.
Answer
Sign in to view the complete answer paper.
Explain about box cut method.
Answer
Sign in to view the complete answer paper.