SU489487A1 - Drainage system - Google Patents

Description

one

The invention relates to agriculture and can be used in the field of land reclamation in the drainage and wetting systems.

A drainage and humidification system is known for two-way regulation of the water regime of wetlands. It consists of vertical wells with filters that do not reach 30-40 cm to the earth's surface and are connected through concrete boxes (water inlets) with horizontal hermetic drains, a waste collector, a connecting pipe, its horizontal drains, and a suction pump.

In order to regulate the water regime in the LetNII period by pumping water into the system, it is necessary to have water in the waste collectors and wells. Since in summer the intensity of the drainage flow is low, as a result, it is difficult to accumulate enough water for irrigation. The system also does not allow the use of compressed air to raise the level of groundwater to moisten upstream soil layers.

The purpose of the invention is to increase the reliability of the system in the humidification cycle.

This is achieved by the fact that vertical wells are made with filters in the end part and are located below the horizontal

drains that are connected to a source of compressed air.

FIG. 1 shows a section of the drying and humidifying system, a longitudinal section; in fig. 2 is a section along A-A in FIG. one.

The system consists of vertical wells 1 with filters 2 in the end part, horizontal drains 3, wells 4 with valves 5 and 6, respectively, at the drainage and nx pipes

7 and air inlets 8, the air duct of the pipe 9 and the air supply unit.

The wells 1 are spaced from each other at a distance which is determined by calculation, and are interconnected by horizontal drains 3. Horizontal drains 3 are made tightly and located from the surface of the bed below the depth of the required lowering of the groundwater level. By means of drainage pipes 7, horizontal drains 3 are connected to the channel, and through valves 6 and the air-conducting pipe 9 to the installation (compressor).

The system works as follows.

This time period when the groundwater level is above the calculated one, the water is collected from the soil of the site by vertical wells 1 and is drained by gravity into the channel along the horizontal drains 3 when the valves 5 of the drainage pipes 7 are open. When the depressive curve 10 decreases, the calculated horizon of the valve 5 closes the desiccant action of the system is terminated. During the summer period, for subsurface humidification, an air supply unit (compressor) with open valves 6 on the air inlet nozzles 8 and closed on the drainage pipes 7 through the air conduction pipe 9 and horizontal drains 3 produces air to the wells 1. As a result, a part of the soil water is displaced from the air injection zone and the groundwater level rises around the wells 1. The depression curve takes position 11. After the air supply is stopped, the groundwater level drops below, but the supply of boards in the upper soil horizons becomes larger than the original. The subject matter of the invention is a dehumidifier-humidification system comprising vertical wells with filters connected to hermetic horizontal drains, characterized in that, in order to increase the reliability of the system in the humidification cycle, the vertical wells are made with filters in the cond part and are located below the horizontal drains, which connected to a source of compressed air.

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