The surface morphology of a discontinuous structural plane in a natural rock mass is irregular. In studies on the shear strength of\ndiscontinuous structural planes, Barton introduced the joint roughness coefficient (JRC) to describe and calibrate the morphological\ncharacteristics of a rough structural plane. To describe Bartonâ??s typical rough profile model, researchers commonly\nconduct a comparison based on a standard curve. This approach does not guarantee graphic precision. With subjective\ncomparison reference drawing, the size and angle of a structural plane cannot be quantitatively controlled, and small bumps\ncannot be described. When the influence of the roughness coefficient of a rock surface is discussed, errors are caused by comparing\nBartonâ??s typical roughness profile model and a general structural surface model. This paper proposed a new method to simulate\nBartonâ??s typical structural surface. A numerical model of a complex structural plane is built automatically. The effects of cohesion\nand internal friction angle on the shear strength of the structural plane are discussed by changing the value of the shear\nstrength parameters.
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