Aiming at screw steel bolt which is widely used in underground engineering and has some disadvantages such as low pre-tension and short pre-stressed area,the author designed mechanical anchoring device.
针对目前地下工程中广泛使用的螺纹钢锚杆支护存在的预紧力差、预应力长度短的问题,设计制造了全预应力螺纹钢锚杆机械锚固装置,有效加大了锚杆预应力段的长度,提高了锚杆的预紧力,解决了施工锚杆后因爆破震动或矿压显现造成的托盘反复松动问题。
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