The fracture network developed in coal rock serves as the primary channel for gas migration

significantly influencing the seepage capacity of coal reservoir. The geometric characteristics of fracture plays a crucial role on determining the flow characteristics of coal-bed methane. To study this

a two-dimensional fracture network model of coal rock was established using COMSOL Multiphysics simulation software

focusing on the coal samples of Baode block as the research subject. The effects of fracture length

density

opening degree and angle on production were investigated

providing valuable theoretical guidance for enhancing coal-bed methane production. The results indicate that fracture length

density

and opening degree have a positive correlation with the seepage capacity of coal rock

while the angle with the flow direction negatively impacts it. However

with the increase of length

density and opening degree

the improvement in flow rate slows down

and the effect of increasing single factor to improve coal-bed methane mining can be neglected

making it difficult to control the cost-benefit ratio. Among the factors influencing outlet

angle and density exert a more significant effect than length and opening degree. Considering the surface directional well plus the high pressure hydraulic cutting method

we can enhance the efficiency of coalbed methane development. This approach connects the natural fracture system using directional borehole and hydraulic slot

fully utilizing the permeability advantage of parallel surface cutting direction. The high-pressure hydraulic cutting process induces cracks in the coal seam

increasing the number and connectivity of diversion channels

thereby bolstering the production of coal-bed methane.