Study on Change Rules of Factors Affecting Gas Loss during Coalbed Air Reverse Circulation Sampling

<div>Pressure variation in the pipeline during the tests of the mixture sample. Point “e” represents the extreme pressure point of 1 # sensor, and point “f” represents the extreme pressure point of 8 # sensor.</div>

Advances in Civil Engineering

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Figure 4

Figure 4: Study on Change Rules of Factors Affecting Gas Loss during Coalbed Air Reverse Circulation Sampling 