Water-rich freeze-thaw broken surrounding rock tunnel supporting method
A technology for crushing surrounding rocks and tunnels, which is applied in the field of tunnel support in tunnels and underground structures, and can solve problems such as groundwater gushing out, tunnel construction difficulties, and tunnel temperature rise
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[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0026] See figure 1 and figure 2 , a kind of water-rich freeze-thaw broken surrounding rock tunnel support method specifically includes the following steps:
[0027] (1) For each construction cycle, advanced support is carried out at the water-rich freeze-thawed and broken surrounding rock above the tunnel excavation vault, that is, 42 advanced small conduits (length 4m) 1 are laid along the tunnel vault, and Carry out grouting reinforcement in the leading ...
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