降低铀尾矿库浸润线的技术实践  

Technical Practice of Reducing the Seepage Line of UraniumTailings Pond

作　　者：赵发 陈文都 曾姣红 ZHAO Fa;CHEN Wendu;ZENG Jiaohong(No.272 Uranium Co.,Ltd.,CNNC,Hengyang 421004,China)

机构地区：[1]中核二七二铀业有限责任公司,湖南衡阳421004

出　　处：《铀矿冶》2024年第3期100-105,共6页Uranium Mining and Metallurgy

摘　　要：尾矿库溃坝的主要原因有渗流破坏、坝坡失稳、地震液化和超高堆坝等,尾矿坝内浸润线过高可能产生渗流破坏,严重的将造成坝坡失稳、破坏甚至溃坝。降低坝体浸润线的常用方法存在施工难度大、人工维护成本高、设备维护管理复杂等问题,采用水平排渗方式在接近水平的排渗盲沟内装设水平滤管,以达到降低浸润线的目的。本工程采用在坝体内部打设水平孔,并在孔内安装渗水管形成水平排渗体,排渗管通过坝体外的集水总管形成排渗网;坝体内的水渗入排渗管,然后汇至集水总管,最终通过自流排至坝外。该法具有造价低、能耗小、便于管理等优点,是降低尾矿坝浸润线的切实可行的方法。The main causes of tailings dam failure include seepage damage,slope instability,seismic liquefaction,and ultra-high dam height.The high seepage line inside the tailings dam may cause seepage damage,and in severe cases,it may lead to slope instability,damage,and even dam failure.The common methods for reducing the seepage line of dam bodies have problems such as high construction difficulty,high manual maintenance cost,and complex equipment maintenance management.The horizontal drainage method is used to install horizontal filter pipes in the drainage blind ditch close to the horizontal level to reduce the seepage line.This project adopts the method of drilling horizontal holes inside the dam body and installing seepage pipes inside the holes to form a horizontal drainage body.The seepage pipes form a drainage network through the main collection pipe outside the dam body.The water inside the dam seeps into the drainage pipes,then converges to the main water collection pipe,and finally flows out of the dam by gravity.This method has the advantages of low cost,low energy consumption,and easy management,and is a practical and feasible method to reduce the seepage line of tailings pond。

关 键 词：铀尾矿库 尾矿坝 浸润线 安全隐患 水平排渗管 

分 类 号：U213[交通运输工程—道路与铁道工程] TL942[核科学技术—辐射防护及环境保护]