軟弱土層潛盾隧道內補強灌漿之建物保護

Building Protection Measures by Compensation Grouting Employed Inside bored Tunnel in Soft Soil

胡森(S. Hu) ； 謝家麟(J. L. Hsieh)

《地工技術》 60期 (1997/04) Pp. 65-82

https://doi.org/10.30140/SG.199704.0005

摘要

適當建物保護措施可減少因施工造成對鄰近環境之影響，而潛盾隧道內補強灌漿工法則係於隧道鉆掘產生土壤漏失尚未傳達至地表前，利用鉆桿自環片之灌漿孔，將灌漿管植入頂拱上方土壞，進行二次灌漿作業，以有效控制地表沉陷。本文將介紹台北捷運中和線CC277施工標之短隧道案例，根據長期監測結果顯示本工法亦適用於軟弱土層。

關鍵字

建物保護:補強灌漿 ； 土壤漏失 ； 軟弱土層

並列摘要

Suitable building protection measures may reduce lots of construction impact to the adjacent environment. The compensation grouting from inside bored tunnel is timely employed before ground loss develops up to ground surface. To conduct it, the grouting tube is inserted from the grout holes on segments to complete the secondary grouting into sublayer above the tunnel crown. Based on the long term instrumentation result, it indicates this method is also suitable for the soft soil condition of contract CC277 in the Taipei Mass Rapid Transit systems.

並列關鍵字

building protection ； compensation grouting ； ground loss ； soft ground