Moisture Content on Methane Desorption Characteristics in Coal and Its Effect on Outburst Prediction

Figure 1

Experimental setup. Denoted elements are as follows: 1, vacuum pump; 2, 6, 7, electromagnetic valves; 3, diffusion space; 4, pressure transducer and real-time data acquisition system (DAS); 5, coal sample container; 8, pressure regulating valve; 9, gas piping; 10, gas cylinder; 11, constant temperature water bath; 12, computer.