Geothermal energy production potential of karst geothermal reservoir considering mining-induced stress

• Mining-induced stress creates interlaced high-aperture and low-aperture fracture zones below the goaf. • The combined effect of high- and low-aperture fractures restricts the effective flow channel length/density of the fracture network. • Contraction of the flow field leads to a significant decline in production flow rate and power as mining distance increases. • The study provides a theoretical foundation for the co-development of coal and geothermal resources.