The design and construction of pre-stressed anchor will influence the security of the project, and it is very important to study the fluctuating variation of the stress.
但预应力的不稳定变化关系到工程运营期的安全性，因而研究锚固工程的设计施工显得非常重要。
2
Hereby, the stress field on superficial slope could be divided into regions of stress lowering, rising and fluctuating from the outside to the inside.