白岩尾矿坝土工席垫排渗措施模拟及渗控效果分析  

Drainage Effect Analysis of Geotechnical Mat in Baiyan Tailings Dam

作　　者：陶东良[1] 梅聪[2] 陆誉婷[3] 

机构地区：[1]长沙有色冶金设计研究院有限公司,湖南长沙410011 [2]河海大学水利水电学院,江苏南京210098 [3]江苏省交通规划设计院股份有限公司,江苏南京210014

出　　处：《水力发电》2015年第6期69-72,共4页Water Power

基　　金：江苏省自然科学基金青年项目基金(SBK201240863)

摘　　要：土工席垫是一种新型土工合成材料,具有集水、水平排水的功能。针对白岩尾矿坝初期排渗系统已部分失效的现状,提出了该工程的后期加高扩容采用土工席垫的水平排渗措施,通过建立包含土工席垫及其排渗管的尾矿库精细三维渗流有限元模型,分析了土工席垫的排渗效果,论证了土工席垫排渗措施的合理性和有效性。通过建立等效渗流分析模型,研究了土工席垫的等效模拟方法及相应的等效渗透系数,成果可用于尾矿坝全库整体模型的三维渗流计算分析。The geotechnical mat is a new type of geosynthetics which can collect and drainage water. Because the initial drainage system of Baiyan Tailings Dam is partially failed, the geotechnical mat is proposed as a horizontal seepage measure for later heightening and expansion of project. A 3-D seepage finite element model including geotechnical mat and drainage tube is established to analyze the drainage effect of geotechnical mat and to confirm the rationality and validity of geotechnical mat. The equivalent simulation method and the equivalent permeation coefficient are studied though the comparison of seepage results between above model and another equivalent model. The equivalent simulation method can be applied to analyze the seepage characteristic of integral model for whole tailings dam.

关 键 词：尾矿坝 渗流控制 排渗措施 土工席垫 等效渗透系数 白岩尾矿坝 

分 类 号：TV641[水利工程—水利水电工程]