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.
(a)
(b)
(c)
(d)