| According to regional tectonic evolution, the laws of mine structure, the Characteristics of in-situ stress field, and the methods and theories of prediction for in-situ stress field etc. in Zhaolou Coal Mine, distribution law and formation-evolution model of middle and small structure were discussed systematically, combined with the information dimension of Fractal Geometry, the complex degree of mine structure was quantitative evaluated; The value and direction of in-situ stress in Zhaolou Coal Mine were measured, combined with finite element numerical simulation method, distribution characteristics of in-situ stress field were summarized; Main influence factors to in-situ stress field were analyzed, variation law of in-situ stress field controlled by the structure was studied, coupling relationship between structure and in-situ stress field was discussed; A BP neural network model having 3 layers and 5×7×3 structure was established etc. The research results show that the structural development and evolution were controlled by regional tectonic evolution, and the structural style are graben and horst in the section of mine structure; The information dimension about faults is more impersonal and reasonable than capacity dimension on the expression of complex degree in mine structure; The main influence factors to in-situ stress field in Zhaolou Coal Mine are recent crustal movements, faults, stratum assemblage and seismic activities, the distribution law of in-situ stress field and the value and direction of principal stress are controlled by geological structure, and the distribution pattern of in-situ stress field promoted the tectonic evolution; The input indexes having tectonic significance were introduced in artificial neural network modeling, such as Relative Intensity of Petrofabric(I), Relative Distance of Fault(D), the prediction of in-situ stress was feasible, the results reveal profoundly coupling relationship between structure and in-situ stress.
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