SU1332029A1 - Prestrained roof bolt - Google Patents

Abstract

The invention relates to the mining industry and is intended to fasten mining workings. The purpose of the invention is to increase labor productivity when installing an anchor. The anchor contains a hollow rod 1 with a perforated - diaphragm 2 and the projections 3 in the castle part. In the cavity of the rod 1 is placed a heating element 9. At the protruding end of the rod 1 has a tail-y, (L with 00 to to about to with

Description

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Vic (X) 4 in the shape of a truncated cone. A support plate 8 is mounted on X 4, interacting with a large cone base. Rod 1, X4 and protrusions 3 are made of an alloy of metals of the system, which has the properties of shape memory when heated. The projections 3 are in the form of perforated disc-shaped ribs bent in the direction of X 4. On the diaphragm 2 there is a cup 5 with corrugated walls, filled with fixing compound (C) 6 and a device for monolithing the locking part of the bar 1. Butt end

one

The invention relates to the mining industry, in particular, to anchor lining of mine workings, which are affected by earthquakes, the dynamic forms of mining pressure of mass explosions.

The aim of the invention is to increase labor productivity during installation, an anchor.

The drawing shows an anchor with a pre-tension.

The anchor consists of a hollow rod 1 with a perforated diaphragm 2 and protrusions 3 in the castle part and a shank 4 at the protruding end, a device for homonolishing the castle part of the rod 1, a glass 5 with corrugated walls, filled with a fixing piece 6, for example, a rapidly hardening cement-sand solution, a sealer 7, made in the form of a round plate, and a support plate 8. In the cavity of the rod, 1 a heating element 9 is placed. The rod 1 with the shank 4 and the projections 3 is made of a material having the shape memory property when heated, for example from an alloy of metals of the system Fe.-Mn. The tabs Z. on the rod 1 are made in the form of perforated disc-shaped ribs that are bent in the direction of the shank 4 of the rod 1. The shank 4 has the shape of a truncated cone that interacts with a large base with the base plate 8. The corrugators 1 breaks the film at the bottom of the cup 5. Corrugated; the walls of the glass 5 are compressed with the extrusion of C 6 into the gap between the locking part and the walls of the well. The castle is monolithic. After curing C 6 on X 4, they put on plate 8, connect element 9 to the mains and heat rod 1. It compresses C 6. The ribs of the protrusions 3 expand and spread to the walls of the well, and X 4, increasing with diameter , hooks onto the hook 8. The compression force of the anchor is transmitted to the rock enclosing the well. 1 hp f-ly, 1 ill.

five

0

five

0

five

Bathroom 5 is made of durable elastic material, and its bottom is made of film. It is mounted on diaphragm 2 and secured to it with a cord or oil gum.

The prestressing anchor is installed as follows.

The well is drilled and the anchor rod 1 is inserted into it with a corrugated glass 5 fixed on the diaphragm 2, which is filled with a fixing composition 6. When the glass 5 is pressed into the bottom of the well, the end of the rod 1 breaks the bar at the bottom of the glass 5 and further axial movement rods 1 The corrugated walls of the cup are compressed with pressing of the replenishing compound 6 into the gap between the locking part of the rod 1 and the walls of the well, and the lock is homogenized. After curing of the fixing composition 6, the shank 4 is put on the support plate 8, the heating element is connected to the mains and the rod 1 is heated to a temperature at which the shape memory properties of its material appear. When this temperature is reached, the rod 1 is shortened, the hardened fixing composition 6 is compressed, the disk-shaped ribs of the protrusions 3 expand and spread into the walls of the well, and the cone shaft 4, increasing in diameter, engages the support plate 8, while

compressing the anchor is transmitted to the rock enclosing the well.

Ph o rmula of the invention

1, The prestressing anchor, which includes a hollow rod with a perforated diaphragm and protrusions in the castle part, homogeneous fixing composition and a shank at the protruding end, differs in the device for monolithing the lock part of the boom, the sealer and the supporting plate on the shank.

This is due to the fact that, in order to increase labor productivity during the installation of the anchor, it is equipped with a heating element placed in the shtanga cavity, and a shank with a shank

Editor L. Langazo

Compiled by B. Usan-Podgornov

Tehred M. Khodanich Proof-reader V. But ha

Order 3781/30 Circulation 454 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

and the protrusions are made of a material that has the shape memory property when heated, while the protrusions on the I bar have the shape of perforated disc-shaped ribs that are bent towards the stem of the bar, and the shank has the shape of a truncated cone with the possibility of its interaction with a large base with the base plate, and the device for homonolitic lock part of the shtangi is made in the form of a glass with corrugated walls filled with a fixing composition, mounted on the diaphragm,

2. Anchor POP.1, characterized in that the pole with the shank and protrusions is made of an alloy of metals of the system Fe-Mh.

Claims (2)

Claim G <Anchor with prestressing, including a hollow rod with a perforated diaphragm and protrusions in the locking part, monolithic with a fixing composition and a shank on the protruding end, a device for monoling the locking part of the rod, a sealant and a base plate mounted on the shank, distinguish 15 I mean that, in order to increase labor productivity when installing the anchor, it is equipped with a heating element located in the cavity of the rod, and the rod with a shank and protrusions is made of material having the shape memory during heating, while the protrusions on the I rod have the form of perforated disk-shaped ribs that are curved towards the shaft end, and the shaft - the shape of a truncated cone with the possibility of its interaction with a large base with the base plate, and the device for monolithic locking part of the rod is made in a cup filled with a fixing composition with corrugated walls mounted on a diaphragm. 2. Anchor pop. 1, characterized in that the rod with a shank and protrusions is made of an alloy of metals of the Fe-Mn system.