| 摘要 |
The invention relates to a reinforcing and/or anchoring screw (1) for using in mining and/or tunnel construction and for screwing into bedrock (7), said screw comprising a screw head (2), a screw end (3), a screw shaft (4) and a thread (5) at least partially embodied on the screw shaft (4). According to the invention, the reinforcing and/or anchoring screw (1) can be economically and securely fixed in the bedrock (7) with little technical effort. To this end, the ratio between the length of the reinforcing and/or anchor screw (1) and the outer diameter of the reinforcing and/or anchor screw is larger than 20, 30, 50 or 70. |
