断裂构造分形几何特征对冲击地压的控制作用研究

doi:10.11799/ce202305018

Abstract

Abstract: Fault structure is not only an important geological factor affecting coal mining, but also one of the main factors inducing mine rock burst disaster. In order to quantitatively analyze and explain the coupling relationship between the fault structure and the spatial position of rock burst, taking the South Hegang Mining Area as the engineering research background, based on the geological dynamic zoning method, the fault structure in the South Hegang Mining Area is divided. Using the principle of fractal geometry, the fractal dimensions of the whole area and the sub area of the fault in the study area are statistically calculated, and the fractal geometric characteristics of the whole area and the sub area of the fault in the study area are analyzed. The results show that NW trending faults and near Sn trending faults have a high degree of control over rock burst in the southern mining area of Hegang, followed by NE trending faults, and near we trending faults are the worst. The spatial position of rock burst has a good corresponding relationship with the fractal dimension value of fault zoning in the study area. The zoning where rock burst has occurred has a large fractal dimension value of fault zoning, which is located in the area with complex and complex fault structure. The fractal dimension value of faults in different directions in the same zone is different from the rock burst, and the degree of control of faults on rock burst is also different; The fractal dimension values of faults in the same direction in different zones and the degree of rock burst control are also the same.The research results quantitatively reveal the control effect of fault structure on rock burst, which can provide new ideas for the prediction and treatment of rock burst.

CLC Number:

TD324

zhang mancang. Study on the control effect of fracture structure on rock burst based on fractal geometry[J]. Coal Engineering, 2023, 55(5): 103-110.

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Study on the control effect of fracture structure on rock burst based on fractal geometry

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