SU1612088A1 - Method of producing ampoules with setting composition - Google Patents

Abstract

The invention relates to the fastening of mine workings. The aim of the invention is to improve the quality of manufacturing ampoules by ensuring that the components of the hardening mixture (TC) are fully and uniformly mixed during the manufacturing process. To do this, the components of the vehicle are fed separately into the ampoule, first the filler (H), then the resin. After that place the ampoule in a heat chamber in a vertical position. The vial is heated and kept in a heated state until it is fully impregnated with resin by filtering the latter through H. For H TS, H particle sizes from 3 to 0.5 mm are used. Full saturation of H resin is determined visually by the resin reaching the bottom of the ampoule when the resin is distributed throughout the volume N. The ampoules made are used to fix the mine workings with steel-polymer anchor bolts. For this, ampoules are placed in pre-drilled holes. Reinforcing bars are inserted into them. By rotating the rods, the ampoules are destroyed. The contents of the vials are agitated, cured and consolidated in the hole. 1 hp f-ly, 1 ill., 2 tab.

Description

one

(21) 4654555 / 23-03

(22) 02.01.89

(46) 12/7/90. Bul Number 45

(71) Mining Institute of the Kola Scientific Center. S.M. Kirov AN

(72) C. M. Dianov, Yu. G. Smirnov, O. V. Timofeev, and V. L. Trushko

(53) 622.281.74 (088.8)

(56) Koshumov B. X. Improving the efficiency of roofing of mine workings in the mines of Dzheskazgan. - Tsvetna metallurgists, 1982, No. 9, p. 15-18.

USSR Author's Certificate No. 934039, cl. E 21 D 20/02, 1980.

(54) METHOD FOR MAKING AMPULES WITH A HARD MIXTURE

(57) The invention relates to the fastening of mine workings. The aim of the invention is to improve the quality of manufacturing ampoules by ensuring that the components of the hardening mixture (TS) are fully and uniformly mixed during the manufacturing process. To do this, the components of the vehicle are fed separately into the ampoule, first the filler (H), then the resin. After that stir the vial in a heat chamber in a vertical position. The vial is heated and kept in a heated state until it is fully impregnated with resin by filtering the latter through H. For H TS, H particle sizes from 3 to 0.5 mm are used. Full saturation of the H resin is determined visually by the resin reaching the bottom of the ampoule when the resin is distributed throughout the volume N. The ampoules made are used to fix the mine workings with steel-polymer anchor bolts. For this, ampoules are stirred in pre-drilled holes. Reinforcing bars are inserted into them. By vrasheni rods destroy ampoules. The contents of the ampoules are agitated, hardened and secured the rod in the hole. 1 hp f-ly, I ill., 2 tab.

(ABOUT

(/)

The invention relates to the fastening of mine workings, and in particular to methods for the manufacture of ampoules with a hardened mixture for anchor lining.

The aim of the invention is to improve the quality of manufacturing ampoules by ensuring that the components of the hardening mixture are fully and uniformly mixed during the manufacturing process.

The drawing shows a scheme for the manufacture of ampoules by the proposed method.

The technology of manufacturing vials with a hardened mixture is as follows.

A vial 1, for example, from a polyethylene film, inside of which is a glass test tube with hardener 2, is fed separately filler 3, for example, quartz sand (granulated slag or tailings of enriched products can be taken, etc.) with a particle size of 3.0- 0.5 mm. Then, synthetic resin, for example, ED-20 epoxy resin, is poured into the free space of the ampoule on top of the filler. The volume ratio of the resin and the filler is chosen in an amount sufficient to evenly distribute the resin throughout the entire volume of the filler, in the case under consideration 1: 2. The ampoules thus filled are placed in a vertical position in the cassette 5 with holes 6, which are 1-2 mm in diameter larger than the diameter of the ampoules, and the cartridge with ampoules is placed in the heat chamber -7, for example, the SNOL drying cabinet. A constant temperature is maintained in the cabinet, which ensures that the filler is soaked in resin by filtering the resin through the filler.

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In tab. Figure 1 shows the dynamic viscosity values of ED-20 epoxy resin, determined by VZ-4 viscometer, depending on the iMOCTH on the heating temperature.

For the ED-20 epoxy resin, if the temperature inside the chamber is maintained at 60-70 ° C, the viscosity of the resin will decrease to 120-150 cPz and the entire volume of the filler in the ampoule will be impregnated with resin for 3-5 minutes. The quality and degree of impregnation of the filler with the resin is monitored visually and evaluated using an impregnation factor, which is equal to the ratio of the mass of the filler, which is impregnated with the resin, to the total mass of the filler in the ampoule.

The temperature in the heat chamber is controlled with a thermometer. Full impregnation of the filler with the resin is determined by the resin reaching the bottom of the ampoule when the resin is distributed throughout the entire volume of the filler.

When used as a shell of ampoules of other highly destructible materials (glass, cloth, paper), as well as the use of other types of resins: polyester, urea, phenolic, impregnation of the filler with resin is provided by temperature regulation inside the heat chamber.

In tab. 2 shows the results of laboratory studies to determine the time of impregnation of the filler with resin, i.e. holding time of the ampoules in the heat chamber for various types of synthetic resins.

With a filler with a particle size of 3.0-0.5 mm in the manufacture of ampoules using the proposed method, the filler is soaked evenly with resin. If the size of the filler is less than 0.5 mm, the resin wets only the boundary layer between the filler and the resin no more than 2 cm, since the packing of the filler particles is very dense. With a further increase in temperature in the heat chamber until the destruction of the ampoule shell (for example, for polyethylene film is thicker, a different 0.015 mm melting point of polyethylene is 75-80 ° C), the heating temperature is heated;

20 30 50 60 70 75 80 90 18000 2300 640 150 120 70 45 20

no washing of the filler with the resin occurs. In the case where the size of the filler is more than 3.0 mm, the impregnation uniformity is not ensured and the large filler particles poorly bind to each other into a homogeneous mass using resin. The mixture becomes loose, falling apart. As a result, the strength properties of polymer concrete are reduced by a factor of 2-3. With a filler size of 3.0-0.5 mm, the strength of samples of a polymer mixture based on epoxy resin ED-20 is 50-60 mPa after 1 day, and with a particle size of more than 3.0 mm, this value decreases to 20-25 mPa.

The ampoules made by the proposed method with a fixing composition for fastening the mine workings by a steel-polymer anchor support are placed in pre-drilled holes, a reinforcing bar is inserted into them, to which rotational movement is attached with the help of special equipment. As a result, the ampoules are destroyed, their contents are mixed, and the rod is fixed in the hole.

Claims (2)

1. A method of making vials with a hardening mixture, including feeding and moving the vials of hardening mixture components from a resin and a filler, characterized in that, in order to increase the quality of the manufacture of vials, by ensuring that the components of the hardening mixture are fully and uniformly displaced, the components are fed into the ampoule separately, first a filler, then a resin, then the ampoule is placed in a heat chamber in a vertical position, where it is heated and kept in a heated state until fully impregnated filler resin by filtration through a final excipient. 2. A method according to claim 1, characterized by the fact that for a hardening mixture a filler with a particle size of 3.0-0.5 mm is used. Table 1 1612088 table 2