Underground Mining From Open Pit To Underground Slope Stability Impact Assessment

Under normal circumstances, within the scope of underground mining, bothunderground take the relative spatial relationship between the body and how the slope, aslong as the disturbance of underground mining, the slope of the steady state are affected.Whether or not the end result of slope stability is a common action by the underground andopen-pit mining, the main difficulty is the need to address the problem of how to considerthe failure mechanism under the action of combined mining of rock slope and how toevaluate the calculation.The effects induced by underground mining and underground mining work face infront of the landslide and the safety measures for research, by using the method ofnumerical simulation of FLACD3D. Analysis of different mining orderly, study theinfluence of the slope rock mass deformation and analysis of slope rock mass displacementand stress variation characteristics, and then determined the best way to mining. It wasconcluded that the mining slope was more favorable to the stability of the slope, and theorder of the advancing sequence of the mining along the working surface was adopted. Todetermine the reasonable solution is through the use of sloping load shedding, anti-slidepile reinforcement, prestressed anchor cable reinforcement contrast analysis, usingdifferent slope angle, safety platform width, the optimal scheme is obtained through theanalysis of the safety factor and project cost comparison. Due to the load shedding amountdifferent concluded load shedding costs also vary greatly, anti-slide pile with prestressedanchor cable reinforcement although it can meet the requirements of slope stability, but thecost of reinforcement is far greater than the cost of load shedding, load shedding schemenot only can meet the requirements of the stability of the slope, and load shedding cost isrelatively low. Therefore, the selection of the slope of the reduction program. In order toreduce the cost of management in the process of underground dynamic mining, it canrecover the coal resources furthest.