科研之友
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摘要
A new nail-type dual anchor-root pressing ring anchor is introduced and the anchorage force of the kind of anchor is provided by the dual anchor-root, i.e., the first anchor-root controls the anchor direction, and the second anchor-root can strengthen the anchoring force when the anchor is embedded in surrounding rock mass. Meanwhile, the first anchor-root can directly anchor the rock mass when it is used in the soft rock. The anchorage length of bolt can be controlled by adjusting the distance of anchor-boot and pressing ring. The technical parameters of bolt are also presented. By the testing contrasted with cement bolt and in-situ slot-bolt, it is found that the anchorage force of the nail-type dual anchor-root pressing ring anchor is considerably high, and its credibility of anchoring force can be guaranteed. The displacement of the bolt is comparatively lower, and it can validly strengthen and prevent the deformation of surrounding rock mass. At the same time, its construction is very quick, and it can stand the exerted loading immediately. Every part of this anchor has strong function and the anchor has good adaptability. By applying this kind of anchor at San coal mine in Dayan mine co., the supporting effect of the anchor is satisfactory.
- 出版日期2005
- 单位东北大学
