SU870725A2 - Device for consolidation of concrete of gaurding structures of underground constructions - Google Patents

Description

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The invention relates to the field of mountain industry, namely to equipment for the repair of structures while restoring their water resistance.

According to the main author. St. No. 275098, a device is known for compacting concrete enclosing structures of underground structures used in the mining industry in the construction of mines and tunnels. This device includes a source of compressed air, a container for supplying the cement slurry under pressure, a pressure plate, an anvil plate and an anvil, the anvil plate being made with a ferrule connected to the anvil by means of a coupling and mounted with the possibility of forced displacement by means of screw jacks of which the ball is mounted, supported on the support fixed on the pressure plate fl T.

However, this device is used in the injection of conventional cement slurries, when it is difficult to establish the discharge limit, and therefore the solution goes far beyond the limits of the compacted structure.

The aim of the invention is to accelerate the performance of work and reduce the consumption of cement slurry with magnetic additive.

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This is achieved by the fact that the device for compacting concrete enclosing structures of underground structures is equipped with permanent electromagnets located along the outer perimeter of the pressure plate.

FIG. 1 shows the device, a general view; Fig. 2 is a section A-A in Fig. 1; a clamping plate with permanent magnets along the contour, is a plan view.

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Claims (1)

This device consists of a source of compressed air 1, a container 2 for cement slurry, soybean, zinnoy through a hose 3 with a pressure 3 branch pipe with a cork valve 4, a pressure plate 5 for feeding into cracked concrete 6 under the pressure of cement slurry, a tubular stop 7 with a hemispheric support 8. At the end of the tubular stop 7 there is a stop plate 9 with kerchiefs 10 stiffness. The tip 11 is connected to the tubular stop 7 by the sleeve 12. On the perimeter of the thrust plate, nuts 13 are fastened into which the jacks 14 are screwed. In the annular groove 16, locking plates 17 are located, which with screws 1 and screw into centering supports fixed to the pressure plate 19. The screw jacks end with a hemispherical recess in which the ball 20 is located. the outer side of the presser plate 5 arranged permanent magnets 21 in the pole special GOVERNMENTAL the spacer 22. This device works as follows. By successively screwing in diametrically opposed screw jacks 14, the perimeter of the pressure plate 5 is sealed, and after it has been reached, the cement slurry with magnetic fluid is injected through the discharge nozzle with the cork valve 4. In this case, a magnetic field of the required intensity is preliminarily created with the help of available magnets 21, which act upon the magnetic particles of the cement slurry, do not allow it to go deep, crack, and retain it in the surface area until it is cured. In this way, a peculiar impermeable plug is created, sealing the surface layer of the structure. This device allows you to reduce the consumption of cement slurry with a magnetic additive and speed up the process of production work on the plugging. The invention The device for compacting concrete enclosing structures of underground structures according to ed. St. No. 275098, characterized in that, in order to accelerate the production of works and reduce the consumption of cement slurry with magnetic additive, it is equipped with permanent electromagnets located along the outer perimeter of the clamping plate. Sources of information taken into account in the examination 1. USSR author's certificate № 275098, cl. E O 5/12, 1969 (prototype).