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一般地认为,断层两边的岩块在外力作用下的运动,其形状和大小都会发生变化,如果变化不显著,为了研究岩块运动的简便,假定岩块为刚体,则岩块内任何两质点之间的距离保持不变。岩块一般运动比较复杂。岩块的一般运动可看作是平移和转动的叠加,像车轮滚动,车轮既随着轴平移又绕轴转动。所谓平移是岩块内任一给定直线,在运动中该直线产状不变。所谓转动是岩块的各质点在运动中都绕同一直线作圆周运动。事实上,断层两边岩块
It is generally believed that the shape and size of rock mass on both sides of the fault will change under the action of external force. If the change is insignificant, in order to study the rock mass motion, assuming that the rock mass is rigid body, any two mass points The distance between the same. Rock general movement is more complicated. The general motion of a rock mass can be seen as a superposition of translation and rotation, like a wheel rolling, with the wheel both translating and rotating about the axis. The so-called translation is any given piece of rock within the straight line, in the exercise of the line-like shape unchanged. The so-called rotation of the rock mass of particles in the movement around the same line for circular motion. In fact, the rocks on both sides of the fault