云南某尾矿坝渗流三维计算分析  

Analysis of 3D seepage of a tailing reservoir in Yunnan

作　　者：安晓宇[1,2] 程鹏[3] 乐陶[4] 

机构地区：[1]天津大学,天津300072 [2]交通运输部天津水运工程科学研究所港口水工建筑技术国家工程实验室,天津300456 [3]中交第一公路勘察设计研究院有限公司,西安710075 [4]中钢集团马鞍山矿山研究院有限公司,马鞍山243000

出　　处：《水道港口》2016年第6期641-645,共5页Journal of Waterway and Harbor

摘　　要：针对云南某尾矿库蓄水后可能存在的绕坝渗漏问题,在充分分析坝址区工程地质和水文地质特征的基础上,建立坝址区三维有限元计算模型,计算分析二期满库洪水和正常运行工况下地下水的渗流情况。计算结果表明,下游坝坡坡脚处地基渗流溢出处的水力梯度较大,建议在下游坡脚3~5 m范围内地基土层表面布设厚度为0.8~1.0 cm的透水反滤碎石层;同时,由于坝基渗漏量较大,建议在坝体底部铺设土工膜,减少两岸绕渗,降低坝体的浸润线。To investigate the leakage problem below a tailing dam in Yunnan province, a three dimensional fi- nite element model was developed according to the hydrogeological and engineering geological characteristics. The effects of groundwater seepage under full-reservoir and normal condition were studied and analyzed respectively. The calculated results show that the foundation＇s seepage overflow point at downstream slope toe presents higher hydraulic gradient. Thus the pavement of permeable filter gravel layer （0.8-1.0 cm） above 3-5m range of foundation soil at downstream slope toe was proposed. It is suggested that the geotechnical membrane should be laid at the bottom of the dam to reduce the seepage around both sides and lower the soaking line of the dam.

关 键 词：尾矿库 尾矿坝 渗流 三维有限元模型 

分 类 号：TU46[建筑科学—结构工程] O242.21[建筑科学—土工工程]