The Retaining Bolt The Anchoring Effect Reinforcing Engineering Of The First Discussion

Existing retaining bolt after a period of using, because use of the changed conditions, such as top loading, slope excavation, or have continued retaining bolt in construction process factors such as the quality problems, will cause the retaining bolt actual has provided support insufficient, slope stability safety coefficient can not reach the requirements, the need for second reinforcement.Existing retaining bolt can produce anchor will reinforce process spacing of reduced, may cause anchor span not satisfy the existing standard. If the very close, anchor arrangement in the overlapping formation stress can cause stress superposition and anchor displacement, thereby reducing the pulling force bolt limit resistance, this is displaying effectively we usually say "group of anchor" effect.At present the retaining bolt reinforce problem is very limited, through research at home and abroad about literature has plenty of reading and comprehensive analysis, appeared to reinforce the retaining bolt of a preliminary study of the anchoring effect, according to rock group of anchor system and failure mechanism of the bearing capacity of pile groups was resistance analysis method is deduced, the ultimate bearing capacity of the resistance to pull anchor computational method, and puts forward the concepts of the second cut rates. By FLAC3D analysis software in the drawing of rock mass destruction numerical simulation analysis, finally, the concrete process instance reflect anchor cable group of the ultimate bearing capacity pull resistance calculation method is practical.This paper is a process of anchor reinforcement discussed the anchoring effect, and puts forward the relevant calculation of the method to ensure the safety of reinforcement design calculation. This paper studies the rocky slope reinforcement design of both the anchoring construction method can other types of both anchoring construction reinforcement design methods provide methodological guidance for the design theory of complementary role of reinforcement.