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Combined with the surfactant solution on the nature and conditions of
use, the feasibility that the surfactant solution blocks methane gas was
analyzed theoretically and the mechanism that the surfactant solution
blocks methane gas was explained. The screened surfactants were made the
performance test and combination. We did a series of experiments about
high-gas coal mine sample by using the FTA200 dynamic contact angle
analyzer and the self-developed gas desorption testing system. The results
showed that the surface tension and contact angle significantly reduced and
methane desorption capacity declined by 64.72%. We primarily concluded that
it had a clear mechanism and marked experiment effect to use surfactant
solution to block gas, which laid the foundation for a new way controlling
the coal mine gas.
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