| 摘要 |
Rock stabilizing apparatus having a tension member adapted to be inserted in a drill hole and being adapted to be cemented at an inner end to the drill hole walls. A longitudinally segmented expansion member having a tapered bore and a radially extending flange fits over the tension member and is insertable in the hole. A tapered wedge slidable of the tension member is forced into the tapered bore of the expanding member by operation of a nut threaded on an outer end of the tension member so that the expansion member expands outwards against the drill hole walls, and at the same time, the flange is pressed against the rock face so as to develop lateral compressive stresses in the rock adjacent the rock face and longitudinal compressive stresses in the rock longitudinally of the tension member.
|
