岩体是一种不连续介质，岩体及岩体结构面强度特性具有一定的特殊性。
Rock mass is a discontinuous medium. The strength properties of rock mass and its structure plane are of certain peculiarity.
在阻断压力传递的同时，还起到降低力学—化学耦合弱化岩石结构面强度的作用。
Apart from the occlusion of pressure transmission, it also can reduce the mechanical - chemical coupling and weaken the strength of the rock structure.
而粒径缩尺后的接触面强度会降低，同时初始剪切模量则有所增长，其影响不能忽略。
However, the interface strength decreases after size scaling while the initial shear modulus increases, which cannot be ignored.
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