Structure of falling is prevented in steel shotcrete in SMW worker method stake envelope foundation ditch
The utility model relates to a structure of falling is prevented in steel shotcrete in SMW worker method stake envelope foundation ditch connects installation wire rope between the tip of steel shotcrete is rather than the hole for hoist of adjacent H shaped steel. The utility model discloses utiliz...
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Format: | Patent |
Sprache: | chi ; eng |
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