梅岭关隧道高应力区段施工技术

Construction Technology of Meilingguan Tunnel in High Stress Paragraph

梅岭关隧道穿越高地应力区,针对此区段隧道拱顶出现的混凝土开裂及剥落,进行了支护参数的优化分析.通过支护参数的优化与调整,有效阻止了隧道拱顶沉降及开裂.

During construction of the Meilingguan tunnel,the tunnel passed through a period of high stress paragraph.For concrete cracking and spalling of tunnel vaults appear in this section, this paper were supported parameters optimization analysis.By supporting parameters optimiza-tion and readj ustment,effectively prevent the tunnel vault settlement and cracking.