在白山水电站2、3号引水洞直径7.5米的斜洞施工中,我局研究采用全断面拉模衬砌工艺(见图1及本刊本期彩色画页),获得成功。采用这种施工工艺与1号斜洞采用立模逐段衬砌的旧方法相比,前者衬砌一条斜洞仅需1个月左右的时间,而后者用了6个月的时 In the construction of inclined tunnels with a diameter of 7.5m at No. 2,3 diversion tunnel of Baishan Hydropower Station, the Bureau successfully studied the adoption of full-face drawing and lining technology (see Figure 1 and this issue’s colored painting pages). Compared with the old method of using the vertical section-by-section lining of the No. 1 inclined hole, the former construction method uses only 1 month or so for lining a sloping hole, while the latter uses 6 months