盾构渣土环保处理系统流体技术研究及应用  

Research and Application of Fluid Technology of EPB Shield Muck Environmental Protection Treatment

作　　者：杨雯雯 郭涛 杜涛 马周 侯海燕 梅元元 YANG Wenwen;GUO Tao;DU Tao;MA Zhou;HOU Haiyan;MEI Yuanyuan(China Railway Engineering Services Co.,Ltd.,Chengdu 610083,Sichuan,China)

机构地区：[1]中铁工程服务有限公司,四川成都610083

出　　处：《隧道建设（中英文）》2021年第S02期605-611,共7页Tunnel Construction

摘　　要：盾构施工会产生大量渣土,采用传统填埋消纳方式处理盾构渣土会造成土地资源浪费和环境污染,因此盾构渣土必须采用分离、脱水、回收利用等环保方式进行处理。若处理流程中的各个子系统、各设备之间没有进行合理的参数匹配,就会造成水池或管路淤积、设备损坏、旋流器失压失效等问题,系统无法长时间稳定工作。为解决上述问题,依托深圳地铁14号线某施工区间的盾构渣土环保处理流程,分析其中的流体技术,提出通过理论和经验计算进行渣土环保处理系统流体匹配的方法,并将此方法运用到该项目的设计、选型中。运行情况表明,运用此方法匹配的流体系统可长期稳定运行,渣土分离、脱水效果好,流体总体达到平衡,实现了水的循环利用。本文提出的流体匹配方法不只适用于本流程,同样适用于大部分渣土处理流程,不同项目可根据处理量和渣土的具体组成,参考本方法进行匹配计算。Shield construction produces a large amount of muck.The traditional landfill method will waste land resources and pollute the environment.Therefore,the shield muck must be treated by environmental protection methods such as separation,dehydration,and recycling.If there is no proper parameter matching among subsystems or equipments in the process,it will cause problems such as pond siltation,pipeline blockage,equipment damage,and hydrocyclone failure,and the system cannot work stably for a long time.In order to solve the above problems,based on the EPB shield muck environmental protection treatment process of a construction section of Shenzhen metro line 14,the fluid technology in the process is analyzed,and a method to match the fluid parameters of the EPB shield muck environmental protection treatment systemis put forward by theoretical calculations and empirical calculations,then the method is opplied to the design and component selection of the project.The operation shows that the fluid system matched by this method can operate stably for a long time,resulting in good separation and dewatering effect of the muck,balanced fluid,and water recycling.The method of matching fluid parameters proposed is not only applicable to this process,but also applicable to most of the muck treatment processes.Different projects can be matched according to the treatment capacity and the specific composition of muck.

关 键 词：盾构渣土 环保处理 流体匹配 渣土分离 渣土回收 

分 类 号：U45[建筑科学—桥梁与隧道工程]