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断层相关褶皱对裂缝的控制作用主要体现在岩层的几何形态对裂缝方位的影响和变形对岩石破裂的控制程度。本文在断层相关褶皱概念模型的基础上提出了裂缝域,并以Suppe的平行膝折概念模型为对象,利用几何学方法对模型中区域性裂缝的裂缝域进行分区描述,并提出了断层相关褶皱的曲线概念模型中区域性裂缝的分布规律。以新疆卡普沙良河一处断层转折褶皱剖面上裂缝的实测数据为依据,对模型进行验证,发现测量结果同模型基本一致。该方法为前陆冲断带地区断层相关褶皱对裂缝控制作用的定量预测提供了一种全新的思路。
The effect of fault-related folds on the fracture control is mainly reflected in the influence of rock geometry on fracture orientation and the degree of deformation control on rock failure. Based on the conceptual model of fault-related fold, this paper proposes a fractal model based on Suppe’s concept model of parallel knee fold, and uses geometric method to describe the fracture region of the regional fractures in the model, and proposes fault-related fold Regional Distribution of Fractures in Conceptual Curve Model. Based on the measured data of a fracture on the folded fold section of Kapul Shaliang River in Xinjiang, the model was verified and found that the measurement results were basically consistent with the model. This method provides a new idea for the quantitative prediction of the fracture control action in the foreland thrust zone.