1 / 13

Pipe Jacking 工法質量控制

DC/2009/08 元朗南 分支污水渠 及廈村 污水 泵房擴建工程. Pipe Jacking 工法質量控制. Reporter : Reed Wei ( Ngai ) E-mail : xiejin_wei@cohl.com Date : 24-06-2011. DC/2009/08 元朗南 分支污水渠 及廈村 污水 泵房擴建工程. content. 1 ) Jacking Pipe 檢查 2 ) Setting out 3 ) Alignment & Invert level control during operation

halla-baker
Download Presentation

Pipe Jacking 工法質量控制

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. DC/2009/08 元朗南分支污水渠及廈村污水泵房擴建工程 Pipe Jacking工法質量控制 Reporter:Reed Wei(Ngai) E-mail :xiejin_wei@cohl.com Date :24-06-2011

  2. DC/2009/08 元朗南分支污水渠及廈村污水泵房擴建工程 content 1)Jacking Pipe檢查 2)Setting out 3)Alignment & Invert level control during operation 4)As-built monitoring 5)Air test & CCTV

  3. DC/2009/08 元朗南分支污水渠及廈村污水泵房擴建工程 Jacking Pipe檢查 Jacking Pipe按照GS及PS的要求進行生產(本合約按BS 5911:Part 120:1989 and BS5911-1:2001),地盤現場收貨時,進行如下檢查: 1、Delivery record & test report; 2、Visual inspection & dimension check; 3、根據要求,take core 送Lab做testing,test item 包括:dimension、hydrostatic test、crushing test、water absorption test & cover depth,試驗合格之後才可使用。

  4. DC/2009/08 元朗南分支污水渠及廈村污水泵房擴建工程 Jacking Pipe檢查(續) 檢查送貨單及supplyor自檢report

  5. DC/2009/08 元朗南分支污水渠及廈村污水泵房擴建工程 Jacking Pipe檢查(續) 外觀檢查包括: 渠筒表面平整度、氣孔、裂紋、PVC lining 氣泡、Joint 之steel collar、cushion ring(packer)、 confined O.ring有無損壞,尾部石矢有無碰損、裂紋或缺口 尺寸檢查按下表(part of table in BS5911-1:2001)進行:

  6. DC/2009/08 元朗南分支污水渠及廈村污水泵房擴建工程 Setting out 按照接收之works order,mark出相應位置之invert level 同alignment,交給分判商工程師,之後工作由分判商自行控制,main contractor負責監管,檢查是否in tolerance。 P.S.:由於前後works order的關係,確定該處invert level時,要參考as-built manhole settlement record,由RE決定此處最終alignment 同invert level。

  7. DC/2009/08 元朗南分支污水渠及廈村污水泵房擴建工程 Operation Control 在運行過程中主要通過Laser Guide監控alignment及invert level。 Laser Guide TBM系統組成示意圖

  8. DC/2009/08 元朗南分支污水渠及廈村污水泵房擴建工程 Operation Control 通過Laser Guide跟蹤,在 Control Panel上顯示目標location與現時走線及行水的差別,operator根據此差別調整steering jacking的伸縮,以求最終達到目標。 TBM組成示意圖 section

  9. DC/2009/08 元朗南分支污水渠及廈村污水泵房擴建工程 Operation Control control panel -mon 控制板

  10. DC/2009/08 元朗南分支污水渠及廈村污水泵房擴建工程 Operation Control Note: 1、若已偏離預定軸線,chasing original line要適度 2、在invert level同alignment之間,invert level優先於alignment; 3、記錄jacking過程中deviation,計算引起的angular deflection有無超過標準情況; 4、jacking完成之後,及時出line&level record。

  11. DC/2009/08 元朗南分支污水渠及廈村污水泵房擴建工程 Operation Control 收貨標準: 1、pipe jacking 任何位置走線偏差小於75mm,行水偏差小於50mm; 2、gradient與預定偏差小於0.5°; 3、the finished or product pipeline shall comply with the tolerance specified in GS Clause 5.70 GS Clause 5.70 : The line of gravity pipelines shall be within 20 mm of the specified line. The invert level of gravity pipelines shall be within 6 mm of the specified invert level and shall be such that there is no backfall at any point.

  12. DC/2009/08 元朗南分支污水渠及廈村污水泵房擴建工程 As-Built Monitoring 1、check entrance ring 及out ring 位置筒alignment 及 invert level; 2、check line及level record是否有超出標準情況; 3、計算deviation引起的angular deflection是否超過渠筒specification要求。

  13. DC/2009/08 元朗南分支污水渠及廈村污水泵房擴建工程 Air Test&CCTV 1、5分鐘內,100mm壓力水頭降幅不超過25mm,最末水頭讀數不小於75mm;至少進行兩次Air test,分別在backfill之前及reinstatement完成之後 兩次合格之後然後進行CCTV。 2、根據CCTV Report,明確各處存在的defects. 3、根據情況進行repair,如grouting、relining、pipe-in-pipe方法,具體方法以RE agree之後進行執漏。

More Related