TBM弃渣场水污染问题分析及控制措施介绍

Analysis on water pollution in TBM slag dumping site and introduction of control measures

辽宁省大伙房水库输水工程7号洞施工中,TBM弃渣场出现水污染问题,对生态环境产生很大影响。该污染是由雨水携带弃渣中的岩石粉,经渣缝渗流,形成白色污水,汇集流入河道所致。通过采取施工期"阻挡、引抽排和过滤相结合"的临时措施,和施工后的永久处理措施,使弃渣场水污染问题得到控制。可为TBM弃渣场位置选择及类似高石粉含量弃渣综合治理工程提供参考。

Water pollution occurs in TBM slag dumping site during the construction of No. 7 Tunnel of water conveyance project in Liaoning Dahuofang Reservoir,which has great influence on ecosystem. The pollution is caused by rain water carrying the rock powder in the abandoned slag,which seeps through the slag seam,forms white sewage and collects into the river. Through adopting temperature measures during construction period,＇blocking,drainage and discharge as well as filtration＇,and formulating permanent treatment measures after construction water pollution problem in the slag dumping site is controlled,thereby providing reference for selecting TBM slag dumping site position and comprehensively controlling similar slags with high stone powder content in the future.