Blasting Vibration Under The Action Of Open Pit Slope Stability Analysis

Mine safety is the primary problem in mine production, open-pit mineblasting on the slope landslide is brought about by the mining is veryimportant to the safety factor, and at present very few related literature tostudy the system, high and steep slope blasting dynamic load of the studyis still very lack. This research topic first to explore the equivalent ofblasting load applied way, based on the slope under blasting vibrationdynamic response, the maximum displacement of slope under blastingvibration, the stress and horizontal displacement and vertical stress of thecontrol section, to the comprehensive analysis of blasting vibration underthe action of the slope stability, to control the safety of the open-pit mineblasting, which makes the mining of open pit mine is the science ofsecurity.Open-pit mine blasting ways often used to break rock drilling, andcaused in the process of blasting vibration to the high and steep slope,influence the stability of the slope. And high and steep open pit slopeinstability of landslide become the significant security hidden danger ofopen-pit mine production. This topic uses the method of scientific andfeasible theory:1.using the characteristic of blasting vibration in rockslope, will be equivalent for the triangle wave blasting dynamic loadapplied to the rock slopeï¼›2.Using the setting damping joint measures toreduce the damage of the blasting shock wave on the slope, blasting loadslow direct effect on the analysis;3.Applying on the basis of the fastlagrangian difference method FLAC3D numerical simulation software,simulation of the open-pit mine slope under blasting vibration effect,using FLAC3D fully dynamic method for calculation, the analysis ofslope stability under blasting vibration. Numerical simulation when thefirst strength subtraction is used to calculate the static stress distributionlaw of slope under the condition of settlement and horizontal and verticaldirection of the maximal displacement, the simulation of the blastingvibration under the action of the slope, the method of using FLAC3dfully dynamic calculation and analysis of the slope under blastingvibration displacement, speed and acceleration of the critical control points and the safety factor of slope under blasting vibration. Sum up themain blasting of the main factors influencing slope stability. Thencombined with practical engineering, the measured data with theengineering practice to verify the accuracy of the logical method. Finallythe numerical calculation method is applied to production practice,provides effective scientific guarantee for safe production of open-pitmine blasting and safety measure.