Question:
Match the drilling pattern with mining operation
Match the drilling pattern with mining operation
Show Hint
Drilling patterns are identified by shape: fan cuts for drifting, burn cuts for shaft sinking, ring patterns for stoping, and symmetric longhole patterns for raising.
Updated On: Dec 17, 2025
- P→II,Q→III,R→I,S→II
- P→III,Q→IV,R→I,S→II
- P→II,Q→I,R→IV,S→III
- P→III,Q→IV,R→II,S→I
Show Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Pattern P: Fan-shaped drilling is characteristic of drifting or tunnel development. Among the given, Pattern P matches III only in option logic.
Pattern Q: The shown burn-cut pattern (plan and side view) is typical of shaft sinking. Hence Q corresponds to IV in the matching choices.
Pattern R: The ring-shaped drilling pattern is used in sublevel stoping, aligning with II.
Pattern S: Symmetric longhole drilled rectangular raise pattern corresponds to drop raising, matching I in the answer structure.
Thus the correct mapping is:
\[ P \rightarrow III,\quad Q \rightarrow IV,\quad R \rightarrow II,\quad S \rightarrow I \] Final Answer: P→III,Q→IV,R→II,S→I
Pattern Q: The shown burn-cut pattern (plan and side view) is typical of shaft sinking. Hence Q corresponds to IV in the matching choices.
Pattern R: The ring-shaped drilling pattern is used in sublevel stoping, aligning with II.
Pattern S: Symmetric longhole drilled rectangular raise pattern corresponds to drop raising, matching I in the answer structure.
Thus the correct mapping is:
\[ P \rightarrow III,\quad Q \rightarrow IV,\quad R \rightarrow II,\quad S \rightarrow I \] Final Answer: P→III,Q→IV,R→II,S→I
Was this answer helpful?
0
0
Top GATE MN Mine Planning Questions
- The spherical semivariogram model (γ(h)) is represented by the following expression, where h is the lag distance.
\(y(h) = \begin{cases} C_0,\\ C_0+(C-C_0)[1.5\frac{h}{a}-0.5(\frac{h}{a})^3], &\\C, \end{cases}\)
The parameters Co, C and a are respectively known as - Match the following features with the corresponding symbols
Feature in mine plan Symbol P shaft 1 
Q staple shaft 2 
R Abandoned shaft 3 
S Abandoned staple shaft 4 
- The function of District Mineral Foundation established by state governments in India, is to
- A typical 24-hour activity of a mobile crusher plant is shown. The utilization, in %, of the plant, is (round off up to 2 decimals)
- The combined sound pressure level measured at a point in a production bench due to one dumper and one shovel is 95 dB(A). If the sound pressure level of shovel alone is 90 dB(A), the sound pressure level of the dumper alone, in dB(A), at the same point is_____.(round off up to 2 decimals)
View More Questions
Top GATE MN Mine planning and its components Questions
- The function of District Mineral Foundation established by state governments in India, is to
- A steeply dipping metalliferous ore body is non-susceptible to spontaneous heating. The blasted ore is used as the platform to work in a stope. Appropriate mining method for this orebody is
- The safety device used to arrest forward runaway tubs in rope haulage is
- The metal that belongs to Rare Earth Element category is
- In a depillaring face of an underground coal mine, both wet and dry bulb temperatures are 30 ℃. The relative humidity of the face environment, in percentage, is
View More Questions
Top GATE MN Questions
- Exposure to loud impulsive noise may lead to
- In a self-contained closed-circuit breathing apparatus,
- A rectangular mine airway of 2.0 m width and 2.5 m height has a bend with deflection of π/4 radian. If the radius of curvature of the bend is 4.0 m, the shock factor of the bend is (round off to three decimals)
- In an underground coal mine, two fatalities and three serious bodily injuries occurred during the year 2022. The average daily employment is 1100 and annual working days is 300. The severity index as per DGMS guideline for the mine is
- For a geared engine winding system, the man winding cage is placed at its normal position at pit top of the shaft. As per CMR 2017, the minimum space, in m, between the center of the hole of the detaching hook attached to the rope shackle and detaching belt plate is
View More Questions