摘要
Abstract
By taking the TBM construction section of the water source project for LXB Project as a typical case,the TBM syn chronous inverted arch lining shutter is designed and applied in combination with the characteristics of the project,so as to speed up the concrete construction of the inverted arch during the operation of TBM.On the basis of the existing techniques,the relevant optimization and innovation are made,i.e.the asymmetric layout is adopted for the cross-section of the lining shutter for the collision avoidance against the continuous conveyor,while 6 working zones with each length of 16 m are arranged for the lining shutter and the working processes of slag-cleaning,reinforcement binding,water-stop and shuttering installations,concrete placement and curing,etc.are reasonably arranged,for which double-line traffic and passing through of concrete mixing carrier in the lining shutter are fully considered;and furthermore,the connection facility of lifting slope track is designed and used as well,thus the lapping transition with the normal track for TBM is realized.The engineering practice shows that under the condition of that no any impacts are there on the construction of TBM,the inverted arch lining of 546 m can be completed per shutter monthly,not only the effect of the synchronous construction with the TBM excavation can be reached,but the target of shortening the construction period can also be got.The design has a broad prospect of popularization in underground tunnel construction.关键词
开敞式TBM/同步衬砌/仰拱衬砌台车/隧洞施工Key words
open type TBM/synchronous lining/inverted arch lining shutter/tunnel construction分类
建筑与水利
