摘要
排泥库(尾矿库)若发生泄漏会对区域地下水造成严重污染,以广西某排泥库为对象,结合该排泥库所处水文地质边界条件及水文地质特征,采用GMS建立地下水模型,基于现场水文地质调查基础上圈定的一个完整水文地质单元,并圈定边界模拟面积58.8 km2,排泥库面积0.519 km2,对排泥库泄漏区地下水水质进行预测评价。结果显示:若排泥库底部或岸坡发生矿泥泄漏,将对区域地下水造成严重污染,在污染羽状物未接触岩溶管道的情况下7200 d内最远可扩散1600 m,对周边居民及水源地影响极大。建议在进行排泥库库底、边坡防渗处理时,必须按规范及设计要求严格施工,保障特殊工况下的防渗性能,将排泥库发生塌陷泄露的风险降至最低。
Dredge library(tailings pond)if leak causing serious pollution of groundwater in the area,a mud base in Guangxi as the object,combined with the mud library of hydrogeologic boundary conditions and hydrogeological characteristics of GMS is adopted to establish the model of groundwater,based on the hydrogeology survey based on tagged a complete hydrogeologic units,and delineating the boundary simulation covers an area of 58.8 km2,dredge library covers an area of 0.519 km2,the mud leakage area to predict the groundwater quality evaluation.Results show that:if the mud at the bottom of the library or the bank slope slurry leakage occurs,causing serious pollution of groundwater in the area,the pollution plume within 7200 days without contact pipe can be spread as far as 1600 m,the impact on the surrounding residents and water source of great advice on mud silo bottom slope,the seepage prevention treatment must strictly according to the requirements of specification and design construction,guarantee seepage control performance under a special condition,the mud libraries are collapsing leaked risk to a minimum.
作者
刘宇成
刘吉磊
柴旺
眭华生
LIU Yu-cheng;LIU Ji-lei;CHAI Wang;SUI Hua-sheng(China Non-ferrous Metals Industry Kunming Survey,Design and Research Institute Co.,LTD.,Kunming,Yunnan 650051,China)
出处
《地下水》
2020年第6期37-39,共3页
Ground water
关键词
地下水
环境影响预测
GMS数值模拟
排泥库
Groundwater
environmental impact prediction
GMS numerical modeling
mud dump
