雪龙滩水电站引水隧洞施工技术措施的探讨

A Probe into the Construction Technology Measures of Intake Tunnel of Xue Longtan Hydroelectric Station

雪龙滩水电站引水隧洞总长为2180为,洞型为圆形,隧洞施工区在海拔2550米的高寒地区。隧洞施工采用钻爆法,根据不同的地质情况不断变化调整爆破参数,以取得良好的爆破效果。隧洞支护有钢支撑悬臂棚架超前支护法、钢拱架支护法。为了改善洞内施工环境,采取送、拌组合方式通风。本文就上述施工方法和技术的先进性与效果加以介绍和论述。

Xue Longtan Hydroelectric station of intake tunnel total length is 2180 M,tunnel form for circular. Tunnel construction area is in the cold plateau region of elevation 2550 M. In order to achieve better blasting effect, the drilling-blasting method was employed. Tunnel shoring used two methods:superforth steel refaining corbel trellis and steel arch of shoring method. In order to improve construction conditions in the tunnel, the forms of draught and suction were taken. This paper ex-plained and researched advance and effect of forenamed construction method and technology.