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.

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.

cdquestions Admin · Accepted Answer

The Correct Option is C

Solution and Explanation

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