SU734373A1 - Sports grounds - Google Patents

Description

one

The invention relates to the field of construction, in particular, to structures of open sports fields such as football fields, grass courts, etc.

Constructions of open sports grounds are known, the top layer of which is located on a drainage device made in the form of a gravel bed or in a drainage drainage company; hectors laid in trenches and covered with soil with channels for draining the good 1.

The disadvantages of such a site are: firstly, the unevenness of drainage over their area and, secondly, the lack of a solid base, which leads to a gradual deformation of the upper soil layer.

The closest technical solution to this invention is a sports field comprising an upper layer of coating and a base made of docked drainage plates made of filter material with communicating through channels connected to the source of heat carrier, forming sections of different permeability, decreasing as they move away from the source Supply of heat carrier 2.

The different permeability of the base plates allows to increase the heat transfer uniformity over the area when it is artificially heated, which improves the quality of the site and increases its service life.

The disadvantage of this design is the need to use plates of different permeability, which greatly complicates the technology of their manufacture. In addition, the discreteness of changes in the permeability of the plates leads to uneven temperature of the floor of the site and, consequently, to the deterioration of their quality.

The purpose of the invention is to simplify the manufacture of the sports ground.

The delivered chain is achieved by the fact that in a well-known sports field, which includes the top layer of the coating and the base, made of docked drainage plates made of filter material with communicating through channels connected to the coolant supply source, to form

sections of different permeability, decreasing with distance from the source of heat carrier supply, the plates are made with the same permeability and partially covered with a variable polymer film in each site area, with the film area increasing with distance from the source of heat carrier and ranging from 5-10 to 60- 70% of the area of the plates. FIG. 1 shows a sports field

in plan (coverage conditionally not shown);

in fig. 2 - section A-A on fng. one; FIG. Section BB in FIG. one;

The sports field contains the top

coating layer 1 (sand, soil mix, grass lawn) and base 2, consisting of drainage plates 3, laid, for example, in longitudinal and transverse rows. We call the longitudinal rows coinciding with the direction

the axes of the channels (voids of the plates) along the leveling layer of sand 4, under which there is a waterproofing film 5.

The plates 3 are made of filter material, for example, expanded clay concrete or porous concrete, and have through channels 6 for draining the drained moisture and supplying heated air. The channels 6 form in plan a closed system (see Fig. 1) connected to the heated air supply source 7 by the supply manifold 8 and return (modular) collectors 9. This allows the creation of a recirculation heating system for the athletic field and significantly save thermal energy consumption .

On top of the filter plates (under the coating) in places where it is necessary to reduce the permeability of the site, there is a polymer film 10, which prevents vertical filtration of air into the soil layer.

The selective installation of an impermeable polymeric film or thin sheets allows a gradual change in the average space of the site sections, although the base is made of standardized plates with a single porosity. The film (thin sheets) covers part of the plates in those parts of the site where the permeability of the base should be reduced.

With a single permeability of the site, filtration of the heat transfer fluid (heated air) into the soil layer is irregular. With the distribution of air passing through, its speed in the plate channels will decrease (the cross-sectional area of the channels when plates are made is assumed to be constant), the static pressure increases, so the volume of air filtering into the soil layer will increase as far from the air supply in

channel. Calculations show that, in order to ensure uniform distribution of air over its entire width, the permeability of the most distant parts of the floor should be 30-40% of the permeability of the initial sections.

The area of the film in each subsequent transverse row of plates will be larger than in the previous one. To reduce the discreteness of the change in permeability from one row to another, the film can be placed on each row of plates in a single strip, and in narrow strips (20–50 cm) with uniform intervals between them. To provide greater uniformity of moisture drainage and fine adjustment of the area’s air permeability, the film or thin polymer plates can be made perforated, especially in the part where they cover a significant part of the plate area.

The ratio of the areas of the covered and uncovered parts in a certain area of the site characterizes the average permeability of the base on this area (from 200-300 to 1000 m / bitch) and, in the case of coating with perforated film, can be corrected by the area of perforations in the film. Moreover, such an adjustment does not require re-laying of plates that have a uniform permeability index.

The use of a heated electrically conductive film or sheets connected to a source of electric current will increase the uniformity of the temperature field in the root layer, i.e. the temperature of the air in the channel of the plates as it moves away from the source of the heat-carrier will kill, and the area of the film will increase, which accordingly will compensate for heat losses.

The use of this invention in the construction of sports fields and playgrounds will improve their quality, increase the stability of operational performance for up to 9-10 months per year and increase the service life.

Claims (1)

Invention Formula The playground, which includes the top layer of the coating and the base, made of docked drainage plates made of filter material with communicating through channels connected to the heat transfer supply source, to form sections of different permeability, decreasing with distance from the heat transfer supply source, in order to simplify production, the plates are made with a single thickness and are partially covered with a variable polymer film in each area of the area, with the film area being increased is examined as it is removed from the 4J source. Is 1.1 XiV iV IJiyirVO. - - 34373, Sources of information taken into account during the examination 1. England patent No. 1152825, clause E 01 C published. 1965. .. eGGs "about: / 0 7 J -9 .10