查詢結果分析
來源資料
頁籤選單縮合
題 名 | 潛盾隧道通過社區下方施工案例探討=Case Study of Shield Tunneling Run Underneath the Existing Building |
---|---|
作 者 | 吳建閩; 謝百鍾; 鍾毓東; 張兆麟; | 書刊名 | 地工技術 |
卷 期 | 76 1999.12[民88.12] |
頁 次 | 頁75-88 |
專 輯 | 深開挖結構設計 |
分類號 | 441.9 |
關鍵詞 | 高壓噴射灌漿; 水平式灌漿; 二次注入灌漿; 建物保護; 潛盾施工; Jet grouting; HDD; Secondary compensation grouting; Building protection; Shield tunneling; |
語 文 | 中文(Chinese) |
中文摘要 | 臺北捷運中和線景安站至南勢角站間由兩條外徑6.1公尺平均長度242公尺之潛盾 隧道連通,出景安站時隧道為上下併行,覆土深為 10 公尺, 上下淨距為 4.5 公尺,之後 上下行隧道分別以曲率半徑 200 公尺及 210 公尺逐漸轉變為平行雙隧道進入南勢角站,此 時覆土深為 13 公尺,水平淨距為 4.0 公尺。 由於該段隧道上方有一混雜的黃昏市場及老 舊社區,且地表至隧道深度間之土層均為軟弱至中等堅實的粉質粘土,基於保護建物安全的 需要, 遂計畫於隧道外圍先行施作 1.5 公尺厚之灌漿環,以降低隧道施工時於地表產生之 沉陷量。經採由地表以單管、雙重管及三重管以多重角度斜灌方式進行高壓噴射灌漿,及採 用水平式灌漿工法 (HDD) 等兩種工法試灌結果, 發現由地表斜灌方式由於灌漿環成形狀況 不佳,且巷道狹窄,可灌漿地點受限而未採用;此外水平式灌漿工法亦於施作過程發生地面 冒漿及地表大量隆起等現象而停止採行。最後改採由隧道內進行二次注入灌漿方式,終得以 安全順利完成本項工作。本文即將上述三種工法之施工規劃、施工過程、施工參數及監測資 料作說明及探討,以供日後類似工程之參考。 |
英文摘要 | The Chung-Ho line of Taipei MRT system from station 018 to station 019 are connected with two bored tunnels. The outer diameter of the tunnel is 6.1 m and the average length 242m. The bored tunnels begin as two stack single tunnels leaving station 018. The stack tunnels entering the station 019 by changing to side-by-side tunnels with the curvature radius 200m and 210m respectively. The overburden of the tunnels varies from 10 to 13 m. The clearance between two tunnels varies from 4 to 4.5 m. The twin tunnels run underneath the existing old buildings. Two test grouting works were carried out in the clay layer prior the tunneling work, to ensure the integrity of the building and reduce the settlement. Two test grouting works included the single tube, double tube and triple tube grouting program and the horizontal directional drilling (HDD) program. Both methods are not suitable for the project after reviewing the test results. Finally the secondary compensation grouting system of tunneling were adopted and the tunneling work was finished successfully. This article presents these three methods of soil improvement, the method statement, construction sequence, parameters and monitoring results to serve for future engineering practice of tunneling works. |
本系統中英文摘要資訊取自各篇刊載內容。