Method for constructing reinforced surrounding rock inside precast-segment tunnels
A construction method and technology in tunnels, applied in tunnels, tunnel linings, earthwork drilling and mining, etc., can solve problems such as the influence of segment integrity, difficulty in meeting first-level waterproofing, and danger of surrounding rock collapse
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[0030] Example: such as Figure 1-16 As shown, this embodiment specifically relates to a construction method for reinforcing the surrounding rock in a prefabricated segment tunnel. This construction method is especially suitable for prefabricated segment tunnels with poor quality surrounding rock and large openings, and specifically includes the following construction steps :
[0031] ① if Figure 1-4 As shown, a prefabricated formwork 2 of appropriate size is selected according to the construction requirements, and it is pre-embedded in the formwork of the reinforced concrete prefabricated segment 1 and poured to form a prefabricated part. It is formed by axial connection with the large cylindrical shell 2.6, and a formwork end cap 2.2 is arranged at the port of the small cylindrical shell 2.1 to seal the nozzle to prevent the inflow of concrete slurry during prefabrication; on the inner wall of the port of the large cylindrical shell 2.6 There is an internal thread 2.5, an...
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