Abstract: In order to study the temporal and spatial evolution law of overburden fracture under the influence of double faults,based on the engineering background of Tucheng Coal Mine in Guizhou Province,the study employed fractal geometry theory to quantitatively characterize the development of overburden fracture on the basis of simulated coal mining activities, thereby obtaining the fractal evolution law of the overburden fracture network. Subsequently, the relationship between gas concentration in the upper corner of return airway and fractal dimension was analyzed. The results show that the fractal dimension of the overburden fracture in the fault affected area ranges from 1. 056 to 1. 544,and its dynamic evolution can be divided into four characteristic stages: dimensional enhancement stage, dimensional reduction stage, secondary dimensional enhancement stage,and stable stage. A sudden increase in the fractal dimension value is observed when the working face advances to the fault affected area,suggesting the implementation of comprehensive preventive measures including intensified gas drainage in fault zones and solidification of roof strata and fault structures. There is a significant positive correlation between the fractal dimension of overburden fractures and the gas concentration in the upper corner.