公路隧道洞口开挖稳定性及落石危害分析

Excavation Stability and Rockfall Hazard Analysis of Highway Tunnel Entrance

随着我国高速公路事业的快速发展,落石对公路危害的分析越来越引起重视。文章以辽宁省在建高速公路——本溪至集安高速公路中本溪至宽甸段双山子隧道为例,通过收集前期地质调绘资料,对隧道洞口开挖稳定性进行评价,并应用Rockfall落石分析软件对隧道洞口落石危害进行分析,以期为隧道洞口段施工及运营期间的支护防护提供参考。

With the rapid development of China's expressways,the analysis of highway hazards caused by rockfall has attracted more and more attention.Taking the Shuangshanzi tunnel in the Benxi-Kuandian section of the Benxi-Ji'an expressway under construction in Liaoning province as the example,the excavation stability of the tunnel entrance is evaluated by collecting the geological mapping data in the early stage,and the rockfall hazards at the tunnel entrance are analyzed by using the Rockfall analysis software,so as to provide reference for the support protection during the construction and operation of the tunnel entrance section.