Fractal Study of the Development Law of Mining Cracks

Studying mining fracture development is vital for geotechnical and engineering geological disaster prevention. This research assesses crack effects on rock mass stress equilibrium during coal mining, potentially causing disasters such as land subsidence landslides. Using fractal geometry theory, the present study investigates of horizontal vertical cracks, revealing their propagation patterns. The dimension generally increases propulsion distance increases; however, fluctuations vary from 250 to 287.5 m, forming a wavering line chart. proportion area relative space with greater distance, indicating expanded upward due separation layers. distribution cracks persists, while decreases, suggesting ground results transmission. fastest increase in occurs at 87.5–100 m. At it peaks 1.4136, complex structures. During propulsion, decreases expansion through overlying layer collapse, new cracks. gradually throughout process. presents simulation model identification, noting limitations identifying tiny