铁路隧道高陡边坡危岩整治技术研究

Research on Treatment Technology of High and Steep Slope Dangerous Rock in Railway Tunnel

隧道洞口常面临危岩落石风险,尤其是山岭隧道高陡边坡的高差大、坡面陡,下落过程中动能大、破坏能力强,跌落至轨面或与高速运行的列车相撞,将产生严重的后果。文章以大临铁路三家村隧道出口危岩段为工程依托,提出主动防护网、被动防护网、帘式防护网、锚索(杆)并结合棚洞的施工方案,并采取自动化监测,有效地保证了岩体的稳定性,消除了运营安全隐患。通过一系列的施工措施,有效地缩短了工期,施工科学、简单,施工安全质量得以保证,可为其他类似高陡边坡危岩整治工程提供施工参考。

The entrance of the tunnel often faces the risk of dangerous rock falling,especially in mountain tunnels.The high and steep slope has the characteristics of large height difference and steep slope,which makes the falling rock have high kinetic energy and strong destructive ability during the falling process.Falling rocks onto the track surface or colliding with a high-speed train will have serious consequences.Based on the dangerous rock section at the exit of the Sanjiacun Tunnel of the Dalin Railway,a construction plan of active protection nets,passive protection nets,curtain protection nets,anchor cables combined with shed tunnels is proposed.Automatic monitoring is adopted to effectively ensure the stability of the rock mass and eliminate hidden safety hazards in the operation phase.Through a series of construction measures,the construction period is significantly shortened.The construction method is sensible and simple.The safety and quality of the construction can be guaranteed,which can provide construction references for other similar high-steep slopes and dangerous rock remediation projects.