Research Article
Numerical Simulation and Engineering Application of Coalbed Water Injection
Figure 8
Equipment used at the coal injection site: (a) ZDY-1250 hydraulic tunnel drilling machine; (b) 5BZ-33/15 pulsed coalbed water injection pump; (c) FKSS-63/4 hydraulic expansion sealer; (d) ZF-III equivalent shunt valve.
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