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以研究不连续面的变形特性为目的，采用双曲线函数作为描述不连续面剪切位移曲线的本构式。讨论了表征剪切位移曲线形态的关键因素，即公式中的系数A，B。根据系数A，B的物理意义，分析了它们与垂直应力比（作用在不连续面上的正应力与材料的单轴抗压强度的比值）、不连续面的起伏角i以及不连续面的剪切面积之间的关系。与此同时，又将该模型的模拟曲线与试验曲线进行了比较。由于模拟曲线能较为正确地描述初始剪切刚度以及峰值剪应力，使得它能较为理想地表现剪切位移曲线，进而使该定量评价方法具有实际的使用价值。
To study the deformation characteristics of the discontinuity plane, the hyperbolic function was used as the constitutive equation describing the shear displacement curve of the discontinuous plane. The key factors that characterize the shape of the shear displacement curve are discussed, namely the coefficients A, B in the formula. According to the physical meaning of coefficients A and B, their ratios to vertical stress (the ratio of the normal stress acting on the discontinuity surface to the uniaxial compressive strength of the material), the undulating angle i of the discontinuity surface, and the discontinuity are analyzed. The relationship between the shear areas. At the same time, the model’s simulation curve was compared with the test curve. Because the simulation curve can describe the initial shear stiffness and the peak shear stress more accurately, it can represent the shear displacement curve more ideally, and then the quantitative evaluation method has practical use value.