Question:
The roof convergence data for 30 days at a monitoring station in a coal mine gallery is given. Day Convergence reading (mm) 0 0 5 4.7 10 11.3 16 19.6 22 28.8 30 34.8
The management decides on a Trigger Action Response Plan (TARP) if the following two premises occur simultaneously.
Premise 1: Rate of convergence exceeds 1.5 mm/day between two consecutive measurements.
Premise 2: Rate of cumulative increase in convergence exceeds 1.0 mm/day.
Identify the day on which TARP is enforced in that gallery.
The roof convergence data for 30 days at a monitoring station in a coal mine gallery is given.
The management decides on a Trigger Action Response Plan (TARP) if the following two premises occur simultaneously.
Premise 1: Rate of convergence exceeds 1.5 mm/day between two consecutive measurements.
Premise 2: Rate of cumulative increase in convergence exceeds 1.0 mm/day.
Identify the day on which TARP is enforced in that gallery.
| Day | Convergence reading (mm) |
| 0 | 0 |
| 5 | 4.7 |
| 10 | 11.3 |
| 16 | 19.6 |
| 22 | 28.8 |
| 30 | 34.8 |
Premise 1: Rate of convergence exceeds 1.5 mm/day between two consecutive measurements.
Premise 2: Rate of cumulative increase in convergence exceeds 1.0 mm/day.
Identify the day on which TARP is enforced in that gallery.
Updated On: Jul 18, 2024
- 10
- 16
- 22
- 30
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The Correct Option is C
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The correct option is (C): 22
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