“新奥法”在引水隧洞工程中的实践应用

Practice and Application of “NATM”to the Diversion Tunnel Engineering

将新奥法引入到河源市区水源工程引水隧洞围岩的施工过程。通过光面爆破、喷锚支护以及围岩变形监测等施工技术手段,有效地防止了破碎围岩及不良地质段围岩可能产生的变形、松动,围岩的完整性得到了维护,保证了施工安全,取得了良好效果,可供类似工程施工时参考借鉴。

NATM has been introduced to the construction of surrounding rock on diversion tunnel of water source project in Heyuan.Through construction technologies of smooth blasting,shotcrete- bolt support and deformation monitoring of surrounding rock,loosening and deformation of the surrounding rock have been effectively prevented,and also the integrity of rock mass has been maintained,which ensures the safety of the construction,and achieves good results. It can be a reference for similar engineering construction.