SU1350362A1 - Method of setting tubular roof bolt - Google Patents

Abstract

The invention relates to the fastening of mine workings, and in particular to methods of installing tubular anchors (A). The goal is to increase the carrying capacity of A. Before installing A into the hole 1, it is fixed to the outer surface of the tubular body (k) 2 by the elastic of sleeve 3. The internal cavity K 2 is filled with a porous material. B cavities K 2 place the explosive charge distributed along the length. Hole 1 is inserted in A followed by blasting. Through the shank K 2, the porous material is pumped with a liquid. Completeness is determined after a liquid has passed through the head section A. During an explosion, detonation products affect porous material and water. The resulting hydraulic shock ensures flared K 2 in the hole 1.1 sludge. 2 (L

Description

The invention relates to the fastening of mine workings, namely to methods of installation. Tubular anchors.

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

The drawing shows a tubular anchor placed in the hole before it explodes.

The tubular anchor consists of a tubular body 1 placed in the hole: 2, elastic sleeves 3, a porous material 4 placed in the cavity of the body 2 with a charge of explosive in the form of a detonating pin 5, a base plate 6 pressed against the rock with a protrusion 7 on the shank housing 2. To the detonating cord 5 when installing the anchor explosive network is connected 8.

The method is carried out in the following manner.

Before installing the anchor in the hole 1, it is fixed to the outer surface

13503622

the anchors prepared for the explosion, after which they were made explosively secured.

g The method was carried out as follows.

When mounting the prefabricated ventilation port No. 11 with a cross section of 2 x 2 m on the mountains. + ZA5 m in the roof of the drill on the grid

10 0, 8 m vertical bore-holes with a diameter of 46 mm and a depth of 2 m. The body of the anchors are made of steel pipes with a diameter of 33.5 mm, cut into sections of 2.1 m. On the pipe end

15 welded protrusions for fixing the base plate. The outer surface of the tubular body is equipped with eight plastic sleeves with a length of 100 mm and a wall thickness of 5 mm. Detonating

20 the cord is wrapped with thick layers of foam rubber and installed in a pipe. A support plate with a size of 200 100-jf mm is fitted and the anchor is inserted into the hole. Then the ends of the detonating cord anchors

The tubular body 2 of the elastic sleeve 25 is connected to a switching network. Naki 3, fill the internal cavity of the tubular body 2 with a porous material 4, along whose axis. Place the explosive in the form of a detonating cord 5, then put the support plate 6 through the anchor head until it stops in the projection 7, after which the anchor is inserted into the hole 1 and through the shank of the body 2, saturate the porous material 4 with liquid, such as water, from the water mains, and its fullness is determined by the flow of liquid (water) through the head of the anchor. When a detonating cord 5 explodes, detonation products affect the transmission medium (raw material and water), a hydraulic shock occurs, which ensures the flaring of the tubular body 2 in the hole- 1. With large volumes of fastening, the installation of the explosive network 8 is performed before the fluid is introduced into porous material 4, and the last operation is carried out immediately in all the editor of N. Rogulich

Compiled by B.Usan-Podgornov Tehred L.Oliynyk

Order 5239/33

Circulation 453 Subscription

VNIIPI State Committee. USSR

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

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

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five

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The discharge of water into the tubular body of the anchor is denigrated from the mine water mains with pshangs to supply water to the perforators. After the foam rubber is saturated with water, the blasting is performed.

Claims (1)

Invention Formula The method of installation of the tubular anchor, including securing elastic tubing sleeves to the outer surface of the tubular body, placing the explosive charge distributed along the length of the charge in the body cavity, introducing the liquid into the anchor and installing it into the hole with an explosive fastening. that, in order to increase the carrying capacity of the anchor, the tubular body is pre-filled with a porous material, and the introduction of fluid into the anchor is carried out by saturating the porous material with it. Proofreader S. Shekmar