Buzhaoba Open Pit Blasting Vibration Studies In The West To Help Governance Works

In the process of seismic wave propagation, although the vibration intensity decreases with the explosive away from the weakened heart, in a certain range, likely to target buildings in the vicinity of non-blast caused varying degrees of injury or damage, this phenomenon is called the effect of blasting vibration.This thesis combined《The design of blasting project on dealing with governing the West Slope emergency relief in Bu ZhaoBa open mine and the studies on key point》to understand and analyze the actuality of slippage and transfiguration at Bu ZhaoBa open mine and the status of non-blasting targets. Production blasting tests of West Slope emergency relief in Bu ZhaoBa open mine were carried out dozens of real-time monitoring, summed up the propagation of seismic waves of West Slope emergency relief in Bu ZhaoBa open mine.Depending on the circumstances of Bu ZhaoBa open mine, interference reduction on the implementation of the core and focus of the earthquake were compared with tests. To determine its reasonable extension of time is 50ms. The blasting vibration reduction rate can reach 12.2%～44.1%. Comparison of vibration reduction was clear.Blasting vibration signals have short-term, non-stationary characteristics. Band energy by blasting vibration signals by wavelet packet analysis. Of blasting conditions on the energy distribution of the signal band, Further study of the seismic wave propagation characteristics of blast.To ensure that the seismic wave does not destroy the nearby buildings and structures and to ensure the stability of the highwall, when the explosion cleared, control of single-stage dose not exceeding 600kg maximum and the total dose of not more than 4000kg.Established prediction model for blasting vibration based on BP neural network. The model considers the more comprehensive the main factors of blasting vibration: hole depth, beyond the depth, packing length, chassis burden, the distance between holes, the distance between rows, maximum explosive, the total amount of drugs. height difference, the distance away from the explosion center. The predicted peak velocity and frequency of blasting vibration reflects a comprehensive variety of factors and the actual monitoring of blasting vibration data obtained are consistent.Prediction model using blasting vibration generated at the target to predict blasting vibration, the blasting vibration control in the target can withstand the shock within the scope of, to ensure the seismic wave does not destroy the nearby buildings and structures and to ensure the stability of the slope to the community has a strong practical value.