某尾矿坝尾矿砂中毛细系数C的确定方法研究  

Study on a Method of Determining the Coefficient C of Capillary in Tailings Sand of a Certain Tailings Dam

作　　者：刘玄钊[1] 张志军[1] 李亚俊[1] 潘文鑫[1] 

机构地区：[1]南华大学核资源工程学院,湖南衡阳421001

出　　处：《南华大学学报（自然科学版）》2013年第2期23-26,31,共5页Journal of University of South China：Science and Technology

基　　金：国家自然科学基金资助项目(51004067);教育部重点科研基金资助项目(211126);环保部科研基金资助项目(监管1209&调查1204);高校博士学科点专项科研基金资助项目(20104324120001);湖南省教育厅科研基金资助项目(10B091&11C1102)

摘　　要：通过室内试验,开展了某矿山尾矿坝中毛细水上升高度计算方法的研究工作.研究结果表明,该尾矿坝尾矿砂中毛细水最大上升高度可用海森公式进行估算,其中系数C的取值问题尤为重要.平行试验结果表明,该尾矿坝坝体的C值可取为0.66 cm2.进一步地,该尾矿坝坝体尾矿砂中毛细水上升高度曲线结果显示,初期的毛细水上升高度约占总高度的50%以上,这表明,当尾矿坝内浸润线上升时,毛细水会随之迅速升高,将对尾矿砂的物理力学性质有较大影响,进而影响尾矿坝的稳定性,因此后续研究工作应重点分析毛细水的上升速率,为尾矿坝的稳定性分析工作提供参考和指导.Laboratory experiments were conducted for studying calculation method of rising height of capillary water in tailings dam of a certain mine. The results show that the rising height of capillary water in tailings sand of this tailings dam can be estimated by Hazen＇s formula in which coefficient C is fairly important. Parallel experiments results manifest that coefficient C of this tailings dam is 0.66 cm2. Further, curves of rising height of capillary water in tailings sand of this tailings dam display that the rising height of the capillary wa- ter in the first days accounts for above 50 percentage of the finally rising height. This indi-cates that capillary water rapidly rises when phreatic level of have impact on the physical and mechanical properties of tailing tailings dam rises, which would sand and influence the stability of the tailings dam. The next research should stress analysis on rising velocity of capillary water which would provide reference and guidance to evaluate stability of taihngs dam.

关 键 词：尾矿坝 毛细水上升高度 浸润线 

分 类 号：TV649[水利工程—水利水电工程]