SU1507984A1 - Roof bolt - Google Patents

Abstract

The invention relates to the fastening of mine workings under conditions of intensive deformation of surrounding rocks. The goal is to provide the support of the lining. Anchor lining includes top to 1 frame lining and paired anchors 2 installed on its sides with rods of rope lengths and a common base plate (OP) 3. In the latter there are 4 main and 6 additional holes. Ropes are left through them, leaving the free ends 7. The latter are fixed on the OP 3 by means of clamping sleeves (B) 8 and nuts 9. Installed B 8 on the ropes with the possibility of an abutment into the upper plane of the OP 3. The length of the free ends 7 is equal to the support lining. The cut holes are inserted into the drilled holes and secured. Through the holes 4, the ends of the ropes are passed and the OD is pressed to the top 1. The ends of the ropes are threaded through the holes 6 and set B 8 on them. As the rocks move to the upper 1, OD 3 lowers. The free ends of the 7 ropes slip through B. 8. After the exhaustion of the end, the end stops on the free ends of the 7 ropes abut against B. 8. The slipping of the ropes ceases. 1 il.

Description

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The invention relates to the fastening of mine workings under conditions of intensive deformation of the surrounding rocks, namely, to anchor flexible lining.

The purpose of the invention is to provide padding flexibility.

The drawing shows anchoring.

Anchor lining consists of a top 1 frame lining and paired anchors 2 installed on its sides with a common base plate 3 having openings 4 through which the anchor bars pass. The latter are made of rope lengths, the inner ends of which are fixed in the bore-holes by means of expansion locks 5. Additional holes 6 are made in the base plate 3, through which the ropes are passed through from the bottom leaving the free ends 7, which are fixed on the plate 3 by means of clamping sleeves 8 with nuts 9. The sleeves 8 are installed on the ropes with the possibility of emphasis in the upper plane of the plate 3. The length of the free ends of the 7 ropes is equal to the amount of support of the lining.

Anchor lining works as follows m. Rope lengths are inserted into the drilled holes on the sides of the top 1 of the frame support and secured to the bore-holes by means of locks 5. Then the ends of the ropes are passed through the main holes 4 of the plate 3 and the ends of the ropes are passed through the bottom holes 6 and install

clamping sleeves 8 on them, tightening the nut 9 with a given force.

Anchor lining works as follows.

As the rocks move upward to

1 with base plate 3 is lowered. When this occurs, the creep (5 of one ends 7 through the clamping sleeves 8). After the exhaustion of exhaustion, the existing end stops in the form of additional

sleeves or bulges on the ropes (not shown in the drawing) abut against the clamping sleeves 8 and the slipping of the free ends 7 through them stops.

Claims (1)

Invention Formula Anchor lining, including upper and paired anchors on its sides, with a common base plate, having openings through which anchor rods are passed, characterized in that, in order to ensure the lining support, it is provided with clamping sleeves with nuts, and anchor shtangi are made from the rope sections, while in the base plate there are additional holes through which the ropes are threaded from the bottom leaving the free ends which are fixed on the plate by means of bushings installed on the ropes with the possibility of an abutment in the upper plane of the slab, and the length of the free ends is equal to the amount of flexibility of the support.