| Anchoring technique is applied widely to rock and civil engineering in order to struct, solidity the rock and control the stability of the rock . It plays an important part in reducing the self-weight of structures , ensuring constructional safety and engineering stability . So it has found application and development worldwide.As a complete technique , but an important componet among it the inspection technique for anchoring quality stays still at drawing test level. In drawing test , heavy hydraulic actuator and tension meter are used , so the drawing test can't be applied to the construction site with numerous anchor bolts due to practicle difficult , it can be used only for spot check and results in serious hidden safety trouble . Therefore , a kind of fast , easy use and nondestructive inspection technique and method are required urgently in engineering .A dynamic inspection technique for anchoring quality (anchoring force and state ) is proposed in this dissertation . Applying this technique the information about anchoring quality can be got when a transient shock load forces the top end of an anchor bolt .This kind of inspection technique will be a new hopeful method which is suited to construction site due to its fast , easy to use and non destructive.In order to constitute this kind of dynamic inspection technique , we consider anchor bolt and surrounding rock as a dynamic system in this dissertation , and describe in detail process of constituting two mathematic models for anchor bolt surrounding rock dynamic system using two kinds of mechanic models , discrete parameters system and distribution parameters system .The mathematic model of the former is a damping vibration equation and the latter's is a damping wave equation. Comparing the two kinds of models wediscover that the mathematic model based on the distribution parameters system can describe and indicate more actually and correctly the dynamic charecteristics and responses of the anchor bolt when it is excited.The propagation of the spring wave excited by dynamic stress in same and different media , the reflection and penetrance of wave are discussed in this dissertation .We can see from that the reflection coefficient can indicate the energy distribution proportion on interface of two kinds of media , The reflection coefficient is dependent on the wave impedance difference of two kinds of media , and the wave impedance equals the media mass density multiplied by longitudinal wave's velocity .For different anchoring state , the mass density of the second media, surrounding rock , is different , therefore the reflective longitudinal wave's velocity is also different. It is obvious that we can determine the surrounding state by using measured longitudinal wave's velocity of reflective wave .In addition , under different boundaries , for example , two cases , the bottom of an anchor bolt is rigid and the top is free , and the bottom of an anchor bolt is a spring support (simulating a weak anchoring state )and the top is free ,when an anchor bolt is excited in a transient shock load , their difference of the displacement, velocity and acceleration responses are analyzed in detail in this dissertation . In doing so we can use also the system's dynamic responses to inspect the anchoring states .The work of this dissertation constitutes the theoretical foundation of dynamic inspection for anchoring quality, it has guiding meaning to the dynamic inspection for anchoring quality.
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