SU1286784A1 - Method of mounting roof-bolt support - Google Patents

Abstract

The invention relates to mining and allows an increase in the carrying capacity of anchor bolts when securing mine workings. To do this, after producing in the ceiling a row of inclined pair wells (C) 1-4, which intersect each other in the middle part. After that, in C -1 and 3 install reinforcing anchor rods (AC) 6, made stranded. Then, in C 2 and 4, rigid anchor rods 8 with a notch on the outer surface are installed by the crushing method, which are passed through the AC 6. The notch ensures reliable coupling of the AC 6 and 8 at their intersection points. In adjacent: along the length of development, rows of lining AUs are installed in oppositely directed wells. It provides equal strength of anchor lining. After installing the AU, the free space of the wells is filled with hardening or insulating material, or sealed. 1 hp f-ly, 3 ill. (L

Description

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The invention relates to the fastening of mine workings, and in particular to methods of erection of anchor lining in the construction of underground structures, as well as in the development of mineral deposits with cameras.

The purpose of the invention is to increase the carrying capacity of anchor lining.

Fig. 1 shows the development of a rectangular shape with a ceiling fixed by anchor rods and pickup; figure 2 is adjacent to figure 1 along the development of its cross-section; Fig. 3 shows a node for intersection of anchor rods.

The technology of the method of erection of anchor lining is as follows

After producing in the ceiling a row of inclined mountain wells. 1-4 intersecting each other. The depth of drilling of wells is chosen such that the contouring of at least one row of tetrahedral blocks 5 in the array is ensured by intersecting wells. After that, reinforcing anchor rods 6, made from multicore, are installed in wells 1 and 3

ropes cross twist. Fixing anchor Rods b at the bottom of the wells 30 can be carried out by means of locks 7.

Then, in wells 2 and 4, anchor rods 8 with notch 9 are mounted on the outer 35 ku in the wells of reinforcing anchor surfaces that pass through rods that differ in rods 6 by means of pressure. The notch 9 ensures reliable adhesion of rods 6 and 8 at their intersection points . Fastening rod1. The method of erection of the anchor pi, including the drilling of a number of inclined pair of wells intersecting at the bottom with each other, filling the well with hardening material and

the fact that, in order to increase the bearing capacity of the anchor lining, in the sequence of the pair of wells will

8 at the bottom of the well is made by installing plugs 10 made of durable wood or other materials. The outgoing ends of the anchor rods are attached to the pick-up 11. In section (Fig. 2), the anchoring rods 8 are installed in opposite direction. directional wells compared with the section in figure 1. This provides anchor bolt of equal-strength.

To ensure the long-term operation of the lining and eliminate the harmful effects of the mine atmosphere on the anchor

rods free space in well 55 wells.

after installation the rod is filled with hardening or insulating material, or sealed.

An example. In the ceiling of the completed production of a drill hole with a diameter of 42 mm at specified angles and for the calculated depth. After that, anchor rods 6 are inserted into wells 1 and 3 (Fig. 1), for example, from double-layered rope of type LC-RO of construction 6 X 36 according to GOST 7668-80, which by means of locks 7 are fixed at the bottom, and the free ends they are attached to the pickup 11. Then, solid anchor rods 8 are pressed through wells 3 and 4, which are threaded through the multi-core rods 6 and secured with them by notch 9. Round steel of a periodic section is used as anchor rods 8. special hire. The rods 8 also pass through the pickup 11 and are pressed against the working surface. After that, squalvesins are filled with hardening material, for example, cement-sand mortar.

Claims (2)

1. A method of constructing anchor supports, including drilling a series of inclined paired wells intersecting at the bottom with each other, filling the wells with hardening material and installing reinforcing anchor rods in the wells, different the fact that, in order to increase the bearing capacity of the anchor lining, in the interval, Additional inclined wells forming additional intersections in the middle part of them with a pair of wells; in this case, when intersecting anchor rods are installed, one of them is passed through the other and interlocked at the intersection site, and the filling: squalling with hardening material is made after the anchor rods are installed. 2. The method according to claim 1, characterized in that, in adjacent lengths of production, the lashing fixing reinforcing anchor rods are set in the opposite direction / , //. /BUT/ , . X Ya l /. /. / / at Mr. J // l (/ L (.,. V . at f  ////// / ZZZZ. FIG. 2 // fi $. 3