覆盖层上干式尾矿坝动力响应及敏感性分析  

Dynamic response and sensitivity analysis of the dry tailings dam on overburden layer

作　　者：龙灿灿 沈振中[1,2] 宋博旭 张宏伟 LONG Cancan;SHEN Zhenzhong;SONG Boxu;ZHANG Hongwei(College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing 210024,China;Key Laboratory of Transport Industry of Comprehensive Transportation Theory(Nanjing Modern Multimodal Transportation Laboratory),Ministry of Transport,Nanjing 211100,China;Nuozhadu Hydropower Plant of Huaneng Lancang River Hydropower INC,Pu'er Yunnan 665000,China)

机构地区：[1]河海大学水利水电学院,南京210024 [2]综合交通运输理论交通运输行业重点实验室(南京现代综合交通实验室),中华人民共和国交通运输部,南京211100 [3]华能澜沧江水电股份有限公司糯扎渡水电厂,云南普洱665000

出　　处：《有色金属(矿山部分)》2025年第1期51-58,共8页NONFERROUS METALS(Mining Section)

基　　金：国家自然科学基金资助项目(52179130,U1765205);综合交通运输理论交通运输行业重点实验室(南京现代综合交通实验室)开放课题(MTF2023010)。

摘　　要：为验证覆盖层上干式尾矿坝加高扩容设计方案的可行性,建立了最终堆积标高尾矿坝的三维有限元模型,采用动力时程分析法,分析了在加高扩容设计方案下尾矿坝的位移、应力、加速度,永久变形和坝坡稳定,并开展了动力特性参数和地震峰值加速度等因素对覆盖层上尾矿坝动力响应的影响。结果表明:加高扩容设计方案下,尾矿坝动力能够满足相应抗震设防要求;动剪切模量系数与动位移响应间存在负相关关系,与加速度响应存在正相关关系,地震动峰值加速度与动位移及加速度响应均为正相关关系。研究成果可为监管部门提供决策依据。A three-dimensional finite element model of the final elevation tailings dam was established to validate the feasibility of the design scheme for increasing the height and expanding the capacity of a dry tailings dam on an overburden layer.The dynamic time-history analysis method was used to analyze the displacement,stress,acceleration,permanent deformation and dam slope stability of the tailings dam under the heightening and expansion design scheme.Then,the influence of dynamic characteristic parameters and seismic peak acceleration on the dynamic response of the tailings dam was investigated.The results indicated that the tailings dam could meet the seismic design requirements under the heightening and expansion scheme.And,there is a negative correlation between the dynamic shear modulus coefficient and the dynamic displacement response,and a positive correlation with the acceleration response.The peak ground acceleration is positively correlated with both the dynamic displacement and acceleration response.The research findings can provide a decision-making reference for regulatory authorities.

关 键 词：覆盖层 干式尾矿坝 动力响应 敏感性分析 动力时程法 

分 类 号：TD926.4[矿业工程—选矿] TD854.6