软弱围岩隧道大变形的产生原因及控制

Causes and Control Measures of Large Deformation in Weak Surrounding Rock Tunnel

软弱围岩在外力扰动下易变形,不利于隧道的安全施工,且易引发质量问题。论文结合关西隧道工程,探明该隧道发生变形的关键成因,在此基础上提出针对性的控制措施,包括对浅埋稀土采矿区围岩大变形的控制、斜井进正洞三岔口快速施工等,以达到保安全、提质量、增效益的效果,最终保证了工程的整体质量,可为相关项目提供参考。

The weak surrounding rock is easily deformed under the disturbance of external force,which is not conducive to the safe construction of the tunnel and is easy to cause quality problems.Combining with the Guanxi tunnel project,this paper explores the key causes of deformation of the tunnel,and then proposes targeted control measures,including the control of large deformation of surrounding rock in shallow-buried rare earth mining areas,the rapid construction of the fork road from inclined shaft to the main tunnel,etc.,so as to ensure safety,improve quality,and increase efficiency,and ultimately ensure the overall quality of the project,which can provide a reference for related projects.