摘要
依托某公路隧道的进口段,建立了考虑加固区和管棚的三维数值模型,对超前管棚预支护体系下洞口段围岩的变形规律进行了研究。在此基础上,对管棚施作角度优化方案进行了研究。研究结果表明:隧道洞口段管棚预支护体系能显著改善洞口段地层的物理力学性质,提高软弱地层的整体性,有效地抑制围岩的不利变形。管棚打设角度对管棚预支护体系作用效果的发挥影响较大。
Relying on the entrance section of a highway tunnel, this paper established three dimensional numerical model of the considering reinforcement area and shed-pipe, and studied the deformation law of entrance section surrounding rock under advanced shed-pipe pre-supporting system. On this basis, it also studied the optimization scheme of shed-pipe applied perspective.
出处
《山西交通科技》
2015年第5期43-44 79,共3页
Shanxi Science & Technology of Transportation
关键词
洞口段
隧道
管棚预支护
角度
变形
entrance section
tunnel
shed-pipe pre-supporting
perspective
deformation
