Buzhaoba Numerical Simulation Of Stability In The West To Help Under Blast Loading

Open-pit mining of mineral resources will inevitably form a large number of high and steep Slope, During excavation, in addition to the slip deformation of the slope itself under its own weight outside, Such as rainfall, mechanical construction, blasting vibration and natural earthquakes and other Dynamic load will have an important impact on slope stability has been formed. Slope under the influence of these factors, the dynamic response of the law has been Geotechnical engineering very concerned about and effective solution to the problem of delay. Of which blast loading have the Affects on slope stability, and also is a hot issue that Need to pay close attention to the production.Bu Zhao Ba open mine is a major productive pit of Xiao Long Tan Mining which is locates in Kaiyuan City, Yunnan Province, in the west of the coal mine, the formed crack is increasing and lengthening. This thesis combined《The design of blasting project on dealing with governing the West Slope emergency relief in Bu Zhao Ba open mine and the studies on key point》to understand and analyze the actuality of slippage and transfiguration at Bu ZhaoBa open mine-Regional Governance project for the West to help in shedding slope cutting method of blasting, the slope on the layout of the key monitoring points, monitoring the process of blasting vibration velocity, to collect a large number of field data. According to monitoring results data, validation of the West Slope to help clear the blasting design parameters is reasonable, and through part of the blasting vibration monitoring data, statistical analysis, summed up the characteristics of blasting vibration velocity.This paper adopt the dynamic finite element method which is widely used and effective on current dynamic slope stability analysis, use the numerical simulation software FLAC3D, establishes Numerical model of three groups of rock slope to reflect the major geological structures.After calculation and analysis, you can view the dynamic response parameter values of any inspection point Including particle vibration velocity, displacement, acceleration, etc; Shows the stress of the anywhere in the slope body,the time curve of strain and deformation,,view the distribution. By comparing and analysis the speed peak of different levels of monitoring high, blasting can be drawn under load with the left slope at speeds of increasing distance from the explosion source showed a decreasing trend; On the slope by the same level of speed and slope peak point of the body, slope can be greater than the slope of particle velocity in the conclusions of the particle velocity; also by the stress distribution at different times as well as monitoring the particle displacement-time curve, can be changes in the slope of the stress and displacement law. Through a comparative analysis of statistical data can be found with increasing slope height, velocity and displacement are there amplification, this phenomenon may reflect the analysis of slope dynamic response speed of displacement of the distribution.These results will be compared with the measured data, basically consistent with the actual, shows that the FLAC3D cloth simulation software for the West Slope of dam marsh treatment project in the rescue, blasting loads of West Slope of the dynamic response of is feasible. The results of this simulation study more fully detailed description of the current phase of the West Slope of the blasting plan is feasible, to have little effect on the formation of slope stability, to ensure that research results on slope safety with good guidance the role.