Blasting Vibration On High And Steep Slope And Its Calculation Method

By blasting rock slope in the vibration generated different response from static rock slope.Blasting vibration on rock slope of has been one of thd hot research problems, The complex and varied rock slope and rock blasting random earthquake loading makes rock slope under the action of the dynamic response characteristics of the impact on Factors associated with excessive and that under the instability characteristics.This thesis on rock slope in the response under dynamic loading characteristics and mechanism of instability, according to the blasting vibration Xiaolongtan Bureau of Mines measured data results of the seismic wave blasting vibration in the frequency domain characteristics and its rts interaction of the rock slope, summeried the following results:1.Summarizing the principles and rules of blasting vibrationSystematically analyzed and summarized the results of previous studies of blasting vibration,and analyzed the existing problems.Blasting dynamic load and static load are different from the moment or repeated functions. When the height and steep slope is loading on dynamic function,its angle and height can not be neglected.2.The characteristics of tbe seismic waves in the frequencyDistributing seismic wave energy in frequency range, which based Buzhaoba pit blasting vibration monitoring results, and establishing rock medium particle under vibration velocity power spectrum model of earthquake waves and using curve fitting formula which basically expressed out Particle Vibration Velocity in frequency domain power spectrum characteristics.3.Blasting vibration damage calculation on the slope of rockAccording to the measured data obtaining velocity model of relations with loss.Establishing the theory of the injury assessment on the basis of theory related directly to the injury size and velocity damage,adding correction factor in the Hoek-Brown guidelines and deriving rock mechanics parameters.4.Blasting effects on slope slope stability anasis of numerical simulationApplying the three-dimensional numerical simulation method for blasting rock slope under dynamic load to study the dynamic response of different time-sharing on the rock slope,evoluted the strain distribution characteristics and analyzed the characteristics of plastic damage.