中老鐵路達隆一號隧道橫洞初支病害整治技術(shù)研究

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摘  要：針對中老鐵路達隆一號隧道橫洞初支大變形等病害問題，分析發(fā)生的過程及其原因，提出封閉掌子面及下臺階和上下臺階設(shè)鋼管支撐結(jié)構(gòu)的臨時措施，并就仰拱未施作和施作及初支侵限3種工況提出相應(yīng)的病害整治措施，建立炭質(zhì)板巖隧道初支病害整治技術(shù)，為今后類似工程提供參考。

關(guān)鍵詞：中老鐵路；隧道；橫洞；大變形；病害；整治技術(shù)

中圖分類號：U455.49     文獻標志碼：A          文章編號：2095-2945（2023）34-0019-04

Abstract： In view of the large deformation of the initial support of the Dalong No.1 Tunnel of the China-Laos Railway， the process and causes are analyzed， and the temporary measures for closing the palm face， the lower and upper steps and the upper and lower steps are put forward. In addition， the corresponding disease treatment measures are put forward for the three working conditions of the inverted arch， and the initial support is limited. The treatment technology of the initial branch disease of the carbonaceous slate tunnel is established to provide reference for similar projects in the future.

Keywords： China-Laos Railway; tunnel; cross hole; large deformation; disease; treatment technology

中老鐵路是泛亞鐵路中線的重要組成部分，由我國提供資金、技術(shù)和標準修建。（剩余5226字）