SU1321782A1 - Installation for thermal consolidation of upper soil layer - Google Patents

Description

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The invention relates to road hydraulic and land reclamation construction, in particular, to devices for thermal strengthening of the upper layer of soil,

The purpose of the invention is to reduce energy consumption.

FIG. 1 shows the installation, general view; in fig. 2 - the same, top view.

The plant for thermally reinforcing the top layer of soil has a chassis 1 with a rigid frame, in front of which are a receiving hopper 2 for soil, cutting milling equipment 3, a screw conveyor 4 for cut soil, a processing chamber 5 with leveling device 6, nozzles 7 for incorporation into ground of dust additives, storage bin 8 for these additives, placed behind the leveling device 6 vibratory rollers 9, to which the heat insulating plate 10 adjoins, and with coil 11 for heating addition of air and fuel5 supplied to supersonic nozzles of drains 12 placed in the through vertical guide openings 13 of the heat insulating plate 10. On the sides of the plate 10 there are downward fins 14 that prevent the heat flux from falling to the sides At the rear end of the heat insulating plate 10, a generator of 15 ultrasonic vibrations is mounted.

The plate 10 also has longitudinal channels 16 located in the projection on the vertical plane between the drains 12 with the openings 17 going under the bottom face of the plate 10, the axes of which are inclined at an angle of 30-45 ° towards the drains 12. The angle of inclination of the axes of the holes 17 is established experimentally and is optimal, since as the angle increases to more than 45 °, the holes 17 are clogged with soil, and when the angle is less than 30, the depth of the holes increases dramatically, which makes them more labor intensive and resistance to air flow. The channels 16 are adjacent to the heat collecting chamber 18 with the outlet 19.

The installation works as follows.

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In the course of the continuous movement of the chassis 1, the cutting equipment 3 cuts off the necessary layer of fixed soil, which is further moved

the conveyor 4 is re-placed in place in the treatment chamber 5 and leveled with the help of the device 6. During these operations, using the nozzles 7 installed above the ends of the conveyor 4 and above the leveling device 6, dust additives from the hoppers 8 are introduced into the loosened soil After which the soil is compressed by vibrating

the compactor 9 to the required density strengthening technology. Then, in a compacted compacted for burning, a layer of soil is cut in two rows in staggered order

drains 12, which form horizontal drains 20 in the ground, along which supersonic gas flow with a temperature of 800 flows from drains of 12

1200 C, formed during combustion

low grade fuels or wastes from refineries, for example, phenolic resins that are supplied at a pressure of 150–200 atm, while the pressure of the gases in the drainer 20 is

0.3–1.0 atm. The heat insulation plate 10, in close contact with the surface of the GRUNTA, prevents gas breakthrough to the surface, contributes to the preservation of heat

and increasing the efficiency of thermal strengthening by increasing the pressure of gases in the horizontal drainage 20 by 0.2-0.3 atm without breaking the strength of the surface layer. For collection

filtering through the surface layer of hot gases, the heat insulating plate 10 has longitudinal channels 16 with inclined openings 17 through which the hot

the gases enter chamber 18 and are subsequently used to preheat the soil in the screw conveyor 4.

A generator 15 located at the exit of the firing soil creates ultrasonic oscillations directed against the movement of the gas flow, contributing to the improvement of the diffusion of heat flow in the treated soil layer.

Such an installation implementation provides thermal strengthening of the upper layer of soils by burning as broken.

natural build, -0.35 m with less energy than the known, which allows to reduce the construction costs of buildings.

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Claims (1)

Claims of the Invention An installation for thermally reinforcing an upper layer of soil, including a chassis with a rigid frame, cutting equipment successively mounted on it, a screw conveyor. a heat insulating plate with a coil of heat removal and ribs lowered on its sides and an ultrasonic oscillator, characterized in that, in order to reduce energy costs, the heat insulating plate is equipped with a heat collecting chamber located in its rear part and located next to the latter in projection on a vertical plane between the drains of the longitudinal channels with the openings going under the bottom of the slab, the longitudinal axis of which is inclined at an angle of 30-45 a processing chamber with a leveling device mounted in the direction of the drains; the last measure of the processing nozzles for insertion is passed through the front-shaped additives made of vibrocat, the openings of the plate part of the slab, and the drains used in chessboard order It is connected to the treatment chamber, and the heat transfer machines with the ledges located upstream of the chamber are in communication with the cavity of the second row axes, a rectangular 20 screw conveyor. O a heat insulating plate with a coil of heat removal and ribs lowered on its sides and an ultrasonic oscillator, characterized in that, in order to reduce energy costs, the heat insulating plate is equipped with a heat collecting chamber located in its rear part and located next to the latter in projection on a vertical plane between the drains of the longitudinal channels with the openings going under the bottom of the slab, the longitudinal axis of which is inclined at an angle of 30-45 - 5 in the direction of drains, the latter being passed through the openings made in the front part of the plate, the plate is adjacent to the treatment chamber, and the heat exchange chamber communicates with the cavity of the screw conveyor. (9 15 - ;. fff 20 f FIG. 2