The utility model relates to a large-deformation layer tunnel primary support structure, belonging to the railway tunnel primary support structure technical field.
本实用新型属于铁路隧道初期支护结构领域，涉及大变形地层隧道初 期支护结构。
The utility model relates to a large-deformation layer tunnel primary support structure, belonging to the railway tunnel primary support structure technical field.
本实用新型属于铁路隧道初期支护结构领域，涉及大变形地层隧道初 期支护结构。
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