| 摘要 |
PURPOSE: A rock bolt and a connector thereof are provided to improve timbering force by using grout materials. CONSTITUTION: A connector(50) of a rock bolt comprises a connector cap(60) and a check valve. The connector cap is coupled with the exterior portion of a main body portion(100) to be detached. The connector cap comprises an insertion passage for grout materials. The check valve is installed in the passage of the connector cap and controls the insertion direction of the grout materials. |
