| 摘要 |
<p>The present invention relates to a test rod of a new structure for checking construction of a rock bolt capable of efficiently checking construction of a rock bolt. According to the present invention, a test rod for checking construction of a rock bolt includes a fixing unit (21) fixed to the rock bolt (10); and a main test rod body (20) formed of an extension unit (22) extended to be protruded from the fixing unit (21) to an inner portion of a finishing shotcrete layer (4). Therefore, if the finishing shotcrete layer (4) is deposited into an inner surface of a base shotcrete layer (4) after the main test rod body (20) constructs the rock bolt (10) to be fixed to the rock bolt (10), the extension unit (22) is protruded toward the inner portion of the finishing shotcrete layer (4), such that the extension unit (22) may be checked with naked eyes even after the finishing shotcrete layer (4) is deposited in order to check whether the rock bolt (10) is constructed in a corresponding portion as in FIG.8, thereby preventing the rock bolt (10) from being constructed smaller than a design value.</p> |
