隧洞洞脸高边坡被动防护网的施工方法研究  

Study on Construction Method of Passive Protective Net for High Slope of Tunnel Face

作　　者：唐毅[1] 尹洁 

机构地区：[1]中国水利水电第七工程局有限公司,成都610081 [2]湖北省水电工程施工与管理重点实验室(三峡大学),宜昌443002 [3]三峡大学水利与环境学院,宜昌443002

出　　处：《价值工程》2017年第33期107-109,共3页Value Engineering

基　　金：国家自然科学基金(51609128);水电工程施工与管理湖北省重点实验室(三峡大学)开放基金(2016KSD13;2016KSD06)

摘　　要：一直以来,隧道边坡的安全防护施工是保证隧洞安全施工的重要前提。西藏某隧道进口地形较平缓,洞口工程地质附近隧道长约30m位于第四系全新统冲积砂层中,砂层自稳能力极差,风积砂层及冲洪积砂层为可液化砂土,工程地质条件较差。为保证隧道洞口施工人员及设备安全,在隧道进出洞口上方设置被动防护网,拦截下落的岩石,以起到良好的防护作用。通过理论数据与实际结果动态比较的方式,优化被动防护网的施工工艺,服务隧道安全防护问题。Safety protection construction of tunnel slope has been an important prerequisite for safe construction of tunnel. A tunnel in Tibet has a relatively flat terrain, and the tunnel near the tunnel portal engineering geology is about 30 m long and is located in the fourth series new alluvial sand layer. The self-stabilizing ability of sand layer is very poor, and aeolian sand layer and alluvial sand layer belong to liquefiable sand, so the engineering geological conditions are poor. In order to ensure the safety of the construction personnel and equipment, the passive protective net is arranged above the entrance of the tunnel to intercept the falling rocks, so as to play a good protective effect. Through the dynamic comparison of theoretical data and the actual results, the passive protection network construction technology is optimized to serve the tunnel security protection.

关 键 词：隧道 洞口段 边坡落石 安全防护 被动防护网 

分 类 号：U213.158[交通运输工程—道路与铁道工程]