Analysis of risk factors and remedies for tailing dams

Tailing dam is a very special mine engineering construction,which is a dangerous source of mud-rock flow with high potential and is closely related to public security.Five-class tailing dams take up more than 80% of all the tailing dams in China,which would destroy our environment and society tremendously if accidents happened.Taking the tailing dam of Tongfa Second Iron Mining Factory in Fanshi County,this paper analyzed the risk factors threatening the tailing dams and concluded extraordinary flood was the key factor for dam break through the accident tree.Furthermore,based on sustainable development and environmental protection,we provided the remedial measures in order to avoid the design and construction limit,i.e.increasing the quantity of outer drainage system to ensure the working stability of tailing dam.Last but not the least,we put forward some suggestions regarding safety management,in order to provide references for the future operation and management of tailing dams.