王新民,周光宏,赵茂阳,李帅,冯丽霞.高烈地震带内膏体排尾坝体稳定性分析[J].有色金属工程,2019,9(8):.
高烈地震带内膏体排尾坝体稳定性分析
Stability Analysis of Paste Tailings Dam in High Intensity Seismic Region
投稿时间:2018-04-23  修订日期:2018-05-24
DOI:
中文关键词:  膏体  尾矿库  地震  稳定性分析
英文关键词:Paste  Tailings dam  Earthquake  Stability analysis
基金项目:“十二五”国家科技支撑计划课题(2015BAB14B01)
              
作者单位
王新民 中南大学资源与安全工程学院
周光宏 中南大学资源与安全工程学院
赵茂阳 中南大学资源与安全工程学院
李帅 中南大学资源与安全工程学院
冯丽霞 中南大学资源与安全工程学院
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中文摘要:
      尾矿坝的稳定是矿山安全生产的重要保障。为了研究在高烈地震带内某上游式膏体排尾尾矿库的稳定性,用Slide软件计算正常及地震工况下湿排和膏体排尾尾矿库的稳定性并进行稳定性分析。结果表明湿排尾矿库的坝体抗滑稳定最小安全系数随地震烈度的增加降低较快,膏体排尾尾矿库的坝体抗滑稳定最小安全系数随地震烈度的增加降低较慢;湿排和膏体排尾坝体抗滑稳定最小安全系数降低规律基本一致,降低曲线呈“S”型,降低过程可分为降低初始时期、加速时期以及减速时期;不同地震烈度下膏体排尾与湿排坝体抗滑稳定最小安全系数的比值K先增加后降低;湿排尾矿库的稳定性受地震影响较大,膏体排尾尾矿库的稳定性受地震影响较小。因此,在高烈地震带内,采用膏体排尾的尾矿库更稳定。研究成果为在高烈地震带的矿山排尾提供参考。
英文摘要:
      The stability of tailings dam is an important guarantee for safe production in mine. The purpose of this paper is to study the stability of the dam whose tailings is disposed as paste constructed by the upstream method in the high?seismic zone. Slide software was used to calculate the stability of wet tailings and paste tailings dam under normal and seismic conditions and to analyze the stability. The results show that the minimum safety factor of dam anti-sliding stability of the wet tailings dam is decreasing rapidly with the increasing of seismic intensity, the minimum safety factor of dam anti-sliding stability of the paste tailings dam is decreasing slowly with the increasing of seismic intensity; the decreasing curves of the minimum safety factor of dam anti-sliding stability of the wet tailings dam under different conditions are gained and it shows that the decreasing laws of factor are unanimous, in accordance with a type of “S” curve; the decrease process can be divided into three parts: period of initial decrease, period of rapid decrease and smooth decrease, respectively; the ratio K of the minimum safety factor of the anti-sliding stability of the plaste tailings and wet tailings dam under different conditions increases firstly and then decreases; the stability of the wet tailings dam is greatly affected by the earthquake, and the stability of the paste tailings dam is not affected by the earthquake. Therefore, in high seismic intensity region, dam with paste tailings are more stable. The research results of this paper provide references for tailings disposal in high intensity seismic region.
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