| 摘要 |
A bracket for attachment to the flange of a bolted section of a tunnel lining. The bracket comprises a base (fig. 1, 11) having a large aperture 15 to hook over the headed fasteners of tunnel tubing sections such as bolts 34, and upstanding flanges (fig. 1, 13) with adjustable length struts 23 for biasing the side of the aperture 15 against the fastener 34. The brackets may be mounted back to back for lateral retention, and are adjustable in angle by the struts 23.
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