Shock and Vibration / 2015 / Article / Tab 1

Research Article

Study on Monitoring Rock Burst through Drill Pipe Torque

Table 1

Loading and drilling conditions of the samples.

Sample
number
Loading
pressure/kN
Coal stress/MPaCoal strength/MPaDrilling speed/m/minDrilling time/sDrilling depth/mm

115006.0150.22120440
220008.0150.22120440
3250010.0150.22120440
4300012.0150.22120440
5350014.0150.22120440
6250010.070.460400
7250010.0100.460400
8250010.0150.460400
9250010.0190.460400
10250010.0240.460400
11250010.0150.15192480
12250010.0150.2144480
13250010.0150.396480

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