Safety and stability analysis of tailings dam of Dajianshan Lead-Zinc Mine in Lianping County,Guangdong Province
Based on the safety status of tailings ponds,combined with the status quo of Dajianshan 1#and 2#tailings ponds in Lianping County,Guangdong Province,this paper studies the dam height and storage capacity of tailings ponds before the cancellation,and the stability and safety of tailings dams.The safety factor affecting the stability of Dajianshan 1#and 2#tailings ponds is analyzed,and the sliding surface is calculated by Swedish arc method.The physical and mechanical parameters of soil layer are determined,the stability calculation model and results are obtained,and the safety coefficient and stability coefficient are analyzed.It can be seen from the calculation results that the stability safety factor of the dam body of the tailings pond can meet the requirements of the code and the dam body is stable under the conditions of normal and flood water levels.The 1#and 2#tailings ponds of Dajianshan Lead-Zinc Mine in Lianping County are normal.However,in order to meet the safety standards of the warehouse,some measures should be taken to strengthen the interception and drainage.
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