摘要
Abstract
The construction for cracking and deformation controlling of the primary support in soft and weak surrounding rocks of Yanmenguan Tunnel was taken as an example in this paper, which was located on Beitongpu Line that was adjusted as a straight line. The geological condition revealed in the process of construction was introduced, and the causes of cracking and deformation of surrounding rocks and its primary support were analyzed. Finally, construction techniques and methods of cracking and deformation controlling of primary support in soft and weak surrounding rocks in water-rich section of tunnel were
proposed in this paper, with the innovation of new construction techniques which consists of anchor tubes locked by steel arch frame.关键词
铁路隧道/软弱围岩/初期支护/开裂变形/控制技术Key words
railway tunnel/ soft and weak surrounding rocks/ primary support/ cracking and deformation/ control technology分类
交通工程
