SU1715952A1 - Drainage plant - Google Patents

Abstract

The invention relates to land reclamation, in particular to the drainage of over-wetted lands in the permafrost zone. The purpose of the invention is to improve the performance of the drainage device under low temperature conditions, as well as to simplify the testing and updating of aggregates. The drainage device includes a column 1, made of a perforated pipe with a heat-insulating tip 2. A cylindrical perforated glass 3 with a rim 4 in the upper part is inserted into column 1. Glass 3 is made of a material with a low thermal conductivity. The lower part of the glass 3 is filled with gravel-pebble material 5, and in the middle part there is inorganic salt 6 in a water-permeable shell 7. In the upper part of the glass 3 there is a heat-insulating layer of sawdust loaded with a layer of sand 9. The device is covered with a cover 10. 1 sludge.

Description

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The invention relates to land reclamation, in particular to the drainage of over-wetted lands in the permafrost zone.

The purpose of the invention is to improve the performance under low temperature conditions and to simplify the testing and updating of the cup fillers.

The drawing shows the device in what condition, section.

The device consists of a column 1, which was removed from a perforated pipe with a heat insulating cap 2. 8 column 1 is inserted into a cylindrical perforated glass 3 with a rim 4 in the upper part. The glass 3 is made of a material with a low thermal conductivity, for example of plastic. The lower part of the glass 3 is filled with gravel-glechnikov material 5, and in the middle part of the inorganic salt 6 is placed in a permeable shell 7, for example in a strong canvas fabric. In the upper part of the glass 3 there is a heat-insulating layer of sawdust 8, loaded from above with a layer of sand 9. The device is closed by a lid 10, which prevents precipitation from entering column 1, especially in summer.

Drainage device operates as follows.

With the onset of negative temperatures in the autumn, in the areas with permafrost, the process of soil freezing begins, which comes from both the surface and the bottom from the permafrost soil. In this case, the freezing water in the soil increases in volume, which creates an overpressure in the decreasing thaw zone. Compressed at the top and bottom, the water under pressure enters column 1, and then into glass 3, passes through the dead-pebble material 5, enters through the water-permeable shell 7, and is saturated with inorganic salt 6. At the same time, the freezing temperature of the resulting eutectic solution is significantly reduced. After that, the solution, penetrating through sawdust 8 and sand 9. pours out of column 1 onto the surface and freezes. Frozen water containing inorganic salt is cleaved and shipped to a designated place.

The operation of the drainage device ends at the moment of freezing of the ground.

In the summertime, the installed devices are inspected and updated, for which glasses 3 are removed from the columns, their contents are poured on a flat surface, the shells are replenished with inorganic salt 6, the heat-insulating sawdust 8 and sand 9 are dried and the glass 3 is filled in the specified sequence. Before the onset of cold weather glass 3 is placed in

column 1.

The operability of the drainage device in conditions of negative temperatures is ensured by the presence of a coaxial tip 2, a cup 3 filled with a heat insulating layer of sawdust 8, a column and a cup made of a material with a low thermal conductivity, such as plastic or ceramic.

Example. Drainage device

5 can be used for drainage of over-wetted lands in the zone of permafrost in the conditions of the agricultural regions of the Yakut ASSR. For example, the Central region of the Autonomous Soviet Socialist Republic has

0 significant areas to be drained. For this in the warmer months. Wetted areas of the wellbore to the depth of the drilling layer, vertical columns are installed in them. Before the onset of cold weather, perforated glasses are placed in columns filled with appropriate components. The distance between the wells is established depending on the terrain, degree

0 watering, salinity and other factors. In wintertime, the ice formed near the installations is removed and stored in a special place, and in summertime the contents of the perforated glass are updated.

When using the proposed device, a more reliable operation of the device for drainage during the coldest time of the year is ensured, revision and updating

0 the contents of the device, the exclusion of precipitation into the device for drainage.

Claims (1)

Claims Drainage Device Including 5 a vertical column made of a rigid perforated pipe, the upper part of which is provided with a coaxial heat insulating head, and the filter material of the filler, which is different 0, in order to improve performance under low temperature conditions and simplify the testing and updating of aggregates, the drainage device is equipped with a perforated cup filled with filter material made of a material with a low thermal conductivity, while the cup is inserted into a vertical column, and the filter cup is placed inorganic salt in a waterproof shell.