The Analysis About The Stability Of The Waste-dump Of Surface Mine In Zaha Nur

The sustainable production of Open-pit coal mine, The normal operation of themechanical equipment, the guarantee of personal safety are all closely related to thestability of the Waste-dump of Surface Mine, It is a imperative task for every staff whoengaged in technical and scientific research in the field of mining engineering to putforward some control measures the stability of slope and the evaluation of the stabilityaccording to the actual situation and engineering geological characteristics of mine,Thereare some main factors influencing the stability of mine slope. That is according to theactual situation of mine to cover an area of the minimum pile under the premise ofmaximum volume of waste rock, and also the height of the abandoned and Angle of theslope.Aiming at open-pit coal mine actual engineering geological characteristics,includingclimate condition, geological structure, hydrogeological characteristics, using the theory ofcomprehensive analysis, through the rock mechanics experiment, and related formula todetermine its strength parameters (the cohesive force, internal friction Angle, dilatancyAngle poisson’s ratio and elastic modulus, tensile strength)of open-pit coal mine of rockand soil in Zaha nur. making deeper discussion and research for outside the existing mineslope stability,simulating the displacement nephogram,analyzing stress nephogram andelastic-plastic region. All of these methods determine the slope stability of the existingmine defense measures.According to the actual situation of the investigation of open-pit coal mine in Zahanur,and the provisions of the state foreign soil slope stability coefficient, the safetycoefficient was determined, what’s more through the FLAC3D strength reduction,we makesure the stability coefficient of open outside coal mine slope in Zaha nur. Although thestability coefficient of safety within the scope of nation permitted,it’s not the least securitycoefficient, in order to reduce the stability coefficient, we can add steep Angle to achieveits ultimate slope, that is known as the optimization of the final slope Angle, through the relevant software gradually increase its final slope Angle to calculate the stabilitycoefficient, until the stability coefficient is consistent with the minimum stabilitycoefficient we stipulated, meanwhile the slope Angle is the final slope Angle we want.After Using FLAC3D again to simulate and calculate the slope Angle of the mineslope we optimized before, then we analyze the stress and displacement contours and makethe relevant conclusions, and in the end, we make a comparison between the optimizedslope Angle of the plastic zone and the existing slope Angle of the plastic zone, althoughafter reduction，the plastic zone of the two have a cut-through, but we can clearly see thatthere is a big difference between the two, according to the comparison above, we getmaintenance measures of slope stability for the future and take measures for slope stability.the research results has a guiding significance for the development in zaha nur.