Earthquake Response And Liquefaction Analysis Of The Center-line Tailing Dam

In recent years,with the rapid development of China's economy,with a large number of non-ferrous metals as raw materials to meet the demand,so the rapid development of mining engineering,the lead tailings waste generation increasing,emissions and safety storage has become restricting the balanced development of the first problem.As an important facility of mine engineering,the safe and stable operation of tailings pond is directly related to social stability,environmental protection,people's life and property safety.This paper takes a pile of high centerline copper mine tailings as engineering background,based on the finite difference method,combined with the local engineering geological prospecting and tailings experiment report,seismic stability analysis of tailings dam by numerical software FLAC3 D.The tailings dam is analyzed respectively on the static and dynamic responses,summarizes the corresponding deformation laws,and analyzes the influencing factors for the specific role of the stability of the tailings to study the failure mechanism,the research content and the achievement mainly involves the following:1)Combined with a large number of documents and the investigation results of the tailings dam damage,the concrete failure mode and the corresponding failure mechanism are summarized.2)Taking the engineering example as the background,the static response analysis is carried out for different time limit,results show that the static stability of the tailings dam decreases with the dam height increasing,from early to late micro deformation of slope horizontal displacement of large area whole connected area,vertical settlement is also growing,so during the construction of tailings dam embankment should be reserved ultra high enough and to deal with the central region set up monitoring points to ensurethat no large range of slip.3)Based on the static analysis of the dynamic response and liquefaction analysis,the displacement field,simulated maximum acceleration response and the variation of pore water pressure numerical understanding under the earthquake load failure trend.Results show that the whole tailings dam good seismic performance.4)With different influence factors as variables,change the effect of various conditions on the dynamic simulation of the response of tailings dam,the deeper the depth of infiltration,stability better than pervious initial dam impervious dam stability,tailings is more coarse particles,the internal friction angle is bigger,better stability,the same peak acceleration of seismic waves on different the stability is not affected,given a reasonable range of each factor influence comprehensive project proposal.