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1 工程概况2~#泄洪洞(兼导流洞)洞身段设计总长为653m,其中:导流洞0+049.05～0+195段长146m,龙抬头洞0+094.55～0+195段水平投影长100.45m,导流、泄洪共用段0+195～0+591段长396m。除导流洞的前146m为临时工程外,其余均为永久工程。2~#泄洪洞(兼导流洞)洞身灌浆分为回填灌浆、固结灌浆,在部分部位设排水孔。其中龙抬头0+94.55～0+174、0+174～0+210为回填灌浆和固结灌浆;导流洞进口～0+174为回填灌浆;0+210～0+328、0+342～0+484、0+544～0+558、0+576～0+591为排水孔和回填灌浆;0+328～0+342、0+484～0+544、0+588～0+576为排水孔、回填灌浆和固结灌浆。回填灌浆、排水孔与固结灌浆均用同一种预埋管,先回填灌浆后,再用该管固结灌浆,最后用该管造孔成排水孔。
1 Project Overview 2 ~ # flood diversion tunnel (and diversion tunnel) The total length of the tunnel section design is 653m, of which: the diversion tunnel 0 + 049.05 ~ 0 + 195 section length 146m, Longtongdongdong 0 +094.55 ~ 0 + 195 horizontal projection Length 100.45m, diversion, flood discharge common section 0 +195 ~ 0 +591 section length 396m. In addition to the temporary diversion project before the 146m temporary works, the rest are permanent works. 2 ~ # spillway tunnel (and diversion tunnel) cave grouting into backfill grouting, consolidation grouting, drainage holes in some parts. Among them, the elevation of 0 +94.55 ~ 0 + 174,0 + 174 ~ 0 + 210 is the backfill grouting and the consolidation grouting; the entrance of the diversion tunnel ~ 0 + 174 is the backfilling grouting; 0 + 210 ~ 0 + 328,0 + 342 ~ 0 +484, 0 +544 ~ 0 +558, 0 +576 ~ 0 +591 are drainage holes and backfilling grouting; 0 + 328 ~ 0 + 342,0 + 484 ~ 0 + 544,0 + 588 ~ 0 + 576 is Drainage holes, backfill grout and consolidation grout. Backfill grouting, drainage holes and consolidation grouting are the same kind of embedded pipe, the first backfill grouting, and then use the pipe consolidation grouting, and finally with the tube into a drainage hole.