Abstract 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.
Inventors
👤 Said M Karara
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-11-05 23:06
CPC Classifications
E; E21; E21D; E21D21/00; E21D21/008
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
Rock stabilizing apparatus for stabilizing a rock mass having a drill hole opening out of a rock face, the apparatus including: a. a tension member adapted to be inserted in the drill hole, the tension member having an inner end portion adapted to be cemented in the drill hole and having a threaded outer end, b. a longitudinally segmented cylindrical expansion member having a tapered bore slidably mounted on the tension member for insertion into the drill hole, c. a radially segmented flange at the outer end of the expansion member engagable with the rock face, d. a tapered wedge slidably mounted on the tension member, e. a nut threaded on the threaded end of the tension member operable for forcing the wedge into the bore of the expansion member so as to spread the expansion member against the walls of the drill hole and press the flange against the rock face.
Claim 2
Dependent Claim
152 words
Rock stabilizing apparatus for stabilizing a rock mass having a drill hole opening out of a rock face, the apparatus including: a. a tension member adapted to be inserted in the drill hole, the tension member having an inner end portion adapted to be cemented in the drill hole and having a threaded outer end, b. a longitudinally segmented cylindrical expansion member having a tapered bore slidably mounted on the tension member for insertion into the drill hole, c. a radially segmented flange at the outer end of the expansion member engagable with the rock face, d. a tapered wedge slidably mounted on the tension member, e. a nut threaded on the threaded end of the tension member operable for forcing the wedge into the bore of the expansion member so as to spread the expansion member against the walls of the drill hole and press the flange against the rock face.