A Grey Fuzzy Comprehensive Model for Evaluation of Geological Structure Complexity

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• 作者：Zhou Yunxia ; Zhou Yongzhang ; Xie Shuyun ; Cao Daiyong ; Qiu Xiangrong
• 关键词：fracture structure ; fractal dimension ; fuzzy comprehensive evaluation
• 刊名：Journal of China University of Geosciences
• 出版年：2008
• 出版时间：August 2008
• 年：2008
• 卷：19
• 期：4
• 页码：436-440

文摘

Several structure sets (faults and folds) are characterized by their self-similarity properties. Herein, we discuss the degrees of complexity of fractures by introducing the box-counting fractal dimension of faults as a key criterion to be used in comprehensive fuzzy analysis model for evaluation of the complexity of structures. Totally, eight criteria including density, intensity, length of faults, types and box-counting fractal dimension of faults, the intersection angle between faults and coal beds, gradient coefficients, dip angles of the coal beds, and variation coefficients of dip angles of the coal seams, were used for the evaluation purpose. The grey fuzzy comprehensive assessment model was used to rank the relative importance of these criteria. Scores indicating the complexity of structure were calculated on the base of criteria values and their weights for each sub-area of the study area in the Pansan coal mine district in the southern Anhui Province, China. The result on the calculated complexity of structure is useful for mining planning in the study area.