Dynamic Response Of A Tailing Pond Under Strong Vibration Mechanism And Safety Prevention And Control

The current tail mine is one of the hazardous sources of mines.When the surrounding mine production is blasting,the burst seismic wave generates an irreversible effect on the stability of the side tail mines,causing difficult expected losses.The thesis mainly uses the dynamic response of a peripheral mine to the dynamic response of a certain tail mine.The static,power and stability of the dam body are detailed by using the actual monitoring and numerical simulation.Its main research is as follows:(1)In a certain tail mine and the surrounding mine as the research object,the relevant physics and mechanics parameters of the numerical simulation by the nonlinear static test,the nonlinear static test,the power calculation of the related physics and mechanics parameters,the test parameters,the next year Analysis,model establishment and numerical simulation provide the basis for research.(2)Three-dimensional seepage analysis is performed on the tail mine,the minimum depression of the tail mine can be obtained in increasing the infiltration facility,which is in line with the corresponding specifications.The position of the maximum hydraulic gradient is the position of the initial dam,but a reverse filter protection layer has been set up here.When the reverse filter layer is fully functioning,seepage damage will not occur there.(3)Using Duncan-Chang type to carry out nonlinear static analysis of the dam body,the deformation of the dam body is mainly in vertical deformation,the maximum deformation occurs at the top portion of the dam and the dam slope near the dam,the dam body is vertically deformed.The value is 3.57 m.Therefore,attention should be paid to the engineering reinforcement and corresponding measures should be taken.The static stress level of each part of the tailings pond is less than 1,which meets the requirements of relevant specifications,so the tailings pond can remain stable under the action of static force.(4)After processing the collected data,linear fit is performed,and the Satskvsky explosive vibration experience formula that meets the reservoir area,and combined with the "blasting safety procedures",the blasting safety under different blasting parameters is judged.It is predicted that the relationship between the minimum safety distance and the maximum single dose of the maximum single dose is met under the premise of ensuring the safety of the tail mine.(5)The numerical simulation of the blasting vibration effect is used by MIDAS software,and the monitoring point is set in the same position of the dam body measurement point,and the speed,displacement,acceleration analysis can be obtained,and the maximum 1.255 cm/s is less than.The normative value,the displacement and acceleration are very small,and the damage to the dam body is carried out by importing the actual monitoring of the seismic wave,the minimum movement safety coefficient of the dam body is 1.48,and the standard judgment blasting does not affect the dam body.(6)Through the liquefaction analysis of the dam body,it is found that the tailings pond will not be liquefied under the action of blasting vibration,and the corresponding measures to reduce blasting vibration are put forward to improve its safety and stability.