Drillable ground support bolt

摘要

PCT No. PCT/AU91/00291 Sec. 371 Date Feb. 19, 1993 Sec. 102(e) Date Feb. 19, 1993 PCT Filed Jul. 3, 1991 PCT Pub. No. WO92/01141 PCT Pub. Date Jan. 23, 1992.A method of installing a drillable bolt into earth, rock or a like material. The drillable bolt comprising a threaded hollow tube (1) with a cutting tip (4) at one end. The drillable bolt being driven into the earth, rock and like material with simultaneous provision of a lubricating fluid being supplied to pass up between the inner surface of hollow tube (1) and the resultant core (30) to the cutting tip (4). Once drilled to the desired position, a liquid cement (25) urged between the core (30) and the inner surface of the hollow tube (1) and past the cutting tip (4) and around to the external surface of the hollow tube (1). The liquid cement (25) securing the drillable bolt in the earth rock, or like material.