万家寨引黄北干1号隧洞钻爆法施工洞段不稳定性因素分析及对策

Analysis on Unstable Factors of NO.1 Tunnel’s section Excavated by Drill-blast Tunneling Method in North Main Line of YRDP and Corresponding Countermeasure

通过对万家寨引黄北干1号隧洞钻爆法施工洞段不稳定性因素分析,提出了较为科学合理的措施,保证了隧洞工程的安全和质量。

Through the analysis on unstable factors of NO.1 tunnel＇s section excavated by drill-blast tunneling method in North Main Line of YRDP,the more scientific and reasonable measures were put forward. The project security and quality had been ensured by these measures.