軟巖隧道開挖大變形控制技術分析

摘  要：大變形問題是軟巖隧道施工中的常見病害，若處理不當會嚴重影響隧道修建成本和工期。該文結(jié)合工程實例從加強工程預報、錨桿施工控制、預留變形量、雙層初期支護和剛?cè)峤Y(jié)合5個方面梳理總結(jié)軟巖隧道施工大變形控制方法，可為類似工程提供借鑒和參考。

關鍵詞：軟巖大變形；預報；錨桿；預留變形量；初期支護；剛?cè)峤Y(jié)合

中圖分類號：U455 文獻標志碼：A          文章編號：2095-2945（2023）28-0170-04

Abstract： Large deformation is a common problem in soft rock tunnel construction. If not handled properly， it will seriously affect the cost and time-limit of tunnel construction. Based on engineering examples， this paper summarizes the large deformation control methods of soft rock tunnel construction from five aspects， including strengthening engineering prediction， bolt construction control， reserved deformation， double-layer initial support， rigid and flexible combination， which can provide reference for similar projects.

Keywords： large deformation of soft rock; prediction; bolt; reserved deformation; initial support; rigid-flexible combination

隨著我國鐵路、公路建設不斷向山區(qū)延伸，隧道工程建設常不可避免地要穿越高地應力軟弱圍巖區(qū)。（剩余5341字）