Research on dynamic response of phosphogypsum tailing ponds under seismic load

Takes the Qinghai Yuntian phosphorus gypsum as the study object, using the Byrne model in FLAC, inputting manual simulation earthquake wave, and has simulated the accumulation process of phosphorus gypsum hole pressure in earthquake until the soil body is liquefied. Obtained from the calculation analysis, the upstream slope area near the water surface is easily liquefied but the beach length has great influence on the seismic liquefaction stability of the tailings dam, and the smaller the liquefaction zone, the higher the stability. Based on the tailings project safety issue under earthquake, this paper provides a specific calculation method and the ideas and conclusions can play a reference role on related projects.