Construction method and support mould for tunnel primary support
A technology of primary support and construction method, which is applied in the direction of tunnel, tunnel lining, earthwork drilling and mining, etc. It can solve problems such as protrusions and pits, health hazards of construction workers, and workers suffering from silicosis, so as to prevent stone falling and layer deformation , shorten the construction period, no post-processing effect
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[0024] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0025] Such as figure 1 Shown, a kind of construction method and support mold of primary tunnel support, adopt movable support mold 4 in the construction of tunnel primary support, described support mold 4 and tunnel excavation surface 1 form mold cavity, Fill the mold cavity with concrete added with quick-setting agent, and after the initial setting of part (bottom) concrete in the mold cavity, the support mold 4 gradually moves to the next station. At this time, the support mold and the formed support The protective layer and the tunnel excavation surface together form a new mold cavity. When ...
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