开敞式TBM隧道仰拱衬砌同步施工关键技术

发布时间：2018-03-27 09:31

本文选题：开敞式TBM　切入点：隧道　出处：《隧道建设》2017年05期

【摘要】：为实现TBM掘进与仰拱衬砌同步施工,缩短工程关键线路工期,提高隧道施工效率,设计出双通道仰拱同步衬砌台车。台车断面为非对称结构形式,以满足TBM掘进施工及其相关配套设施的布置及运行。台车采取"前斜坡段+前道岔段+4个标准段+后道岔段+后斜坡段"的布置方式,台车下方划分成多个作业面,具备仰拱混凝土浇筑准备、浇筑、养护等的功能;根据施工支洞距离长、坡度大以及TBM掘进段交通条件受限的特点,采用支洞轮式运输和主洞有轨运输的联合运输方式,保障物料运输快捷有序;台车前后采用升降坡轨道搭接装置,实现TBM配套标准轨道竖向搭接的平顺过渡。工程实践表明:仰拱同步衬砌台车应用效果较好,施工进度最大可达到648 m/月,在不影响TBM正常掘进的前提下可有效缩短关键线路工期。
[Abstract]:In order to realize the synchronous construction of TBM tunneling and invert lining, shorten the construction period of key lines and improve the tunnel construction efficiency, a double channel inverted arch synchronous lining car is designed. In order to satisfy the arrangement and operation of TBM tunneling construction and related supporting facilities, the abutment car adopts the arrangement of "four standard sections of front ramp section and four standard sections of turnout section", and the bottom of the platform car is divided into several working surfaces. Having the functions of preparation, pouring and maintenance of inverted arch concrete, according to the characteristics of long distance, large slope and limited traffic conditions of TBM excavation section, the combined transportation mode of supporting tunnel wheeled transport and main tunnel rail transportation is adopted. The material transportation is guaranteed to be fast and orderly, the lifting and sloping track lap device is adopted before and after the platform car, and the smooth transition of the vertical lap joint of the TBM supporting standard track is realized. The engineering practice shows that the application effect of the inverted arch synchronous lining trolley is better. The maximum construction progress can reach 648m / month, which can effectively shorten the construction period of the key lines without affecting the normal excavation of TBM.
【作者单位】：辽宁省水资源管理集团有限责任公司;沈阳城市建设学院;中国水利水电第十四工程局有限公司;
【基金】：辽宁省水利厅科技指导性计划项目(2016-05)
【分类号】：U455.4

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