赤泥堆场岩溶渗漏治理

摘要

Seepage is always a problem in red mud storage site.Seepage is inevitable in red mud storage site of karst area because of karst fissures and conduits,and the seepage-proofing treatment is a complicated and systematic project.Strongly alkaline (pH of solution ≥12)liquids or solids will have worse effect on envi-ronment if the fluid waste is seeped.The comprehensive seepage-proofing treatment methods of karst seep-age conduits in red mud storage site include vertical curtain grouting,in-site aven plugging and red mud blan-keting.The comparison of permeability of strata and water quality at outflow points before and after grou-ting shows that the seepage-proofing treatment is effective.%渗漏问题一直是赤泥堆场的一个难题。在岩溶地区的赤泥堆场，因岩溶裂隙管道的存在，渗漏的产生是必然的，而防渗处理又是一个比较复杂、系统的工程。而对堆存强碱性(溶液的 pH 值≥12)液、固体物的堆场，若发生废液外渗，其对环境的危害及影响都较大。对赤泥堆场岩溶渗漏通道采取垂直帷幕注浆、场内封堵落水洞、赤泥铺盖等综合防渗措施进行治理，通过灌浆前后地层的渗透性对比和泉点水质监测，结果表明防渗治理的效果很好。