预应力锚索锚固的作用分析

The Mechanisms of Prestressed Rockbolts Reinforcement

本文用弹性半空间问题的Boussinesq解、Cerruti解和Mindlin解的叠加，给出了线弹性介质中，三维条件下预应力岩石锚索附加应力场的分布规律。由此得到的关于锚索间距与长度的比值、排距与长度的比值及锚索长度的选择结果与工程实际吻合．

In this paper, the superposition of Boussinesq's solution, Cerruti's solution and Mindlin's solutions in an elastic half-space is uscd to solve stress distributions produced by prestressed rockbolts in three dimensional elastic medium, ignoring any other factors. The criteria of the choice of the bolt length and the arrangment of the bolts in rock are presented by this method. These criteria are quite close to those frequently used in engineering practice.