The invention discloses a
coal bed methane reservoir pulverized
coal generation, migration,
sedimentation, blocking dynamic evaluation instrument which comprises a core displacement module, a vacuumizing module, a visualized core clamping module, a
bottom water simulating module, a confining pressure module, a return pressure module, a measuring module, a
microscope digital image submodule and
temperature control and
data acquisition module. The dynamic evaluation instrument is used for observing and evaluating
coal bed methane reservoir pulverized coal generation, migration,
sedimentation, blocking and the like, and capable of analyzing and observing coal
bed methane reservoir pulverized coal sources and pulverized coal migration passages, quantitatively evaluating influence of pulverized coal
sedimentation and blocking on reservoir permeability and reservoir production, and determining relations between draining gas
recovery parameters and produced pulverized coal, and a experimental foundation is provided for pulverized coal production reduction, equipment wear rate lowering and discharging
recovery optimizing. In addition, by the dynamic evaluation instrument, motion laws of pulverized coal in cores can be observed, the optimal discharging
recovery under pulverized coal migration can be explored, and maximal
resource utilization rate can be obtained.