SU1155670A2 - Land-reclamation system - Google Patents

Abstract

1. Meliorative system on author. St. No. 1049614, characterized in that. that, in order to increase the work efficiency by ensuring the groundwater level control system is uniform over the area in the drainage and humidification modes, the peripheral parts of the drainage and dampening network are equipped with absorbing wells, the upper mark of which corresponds to the drainage rate. 2. The system of claim 1, wherein the absorbing wells are located at a distance from each other, decreasing from the center to the periphery in proportion to the pressure drop in the network.

Description

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OTHOCHJOH iisoopcreHHe to agriculture, in particular to land reclamation.

According to the main author. St. No. 1049614 a system is known that includes a pumping unit, a waterproof screen, a closed drainage and humidification network in the form of a looped horizontal collector, to which drains are connected. At. This drainage and humidification network is located below the groundwater level and is divided into separate zones connected by a pump unit 1.

A disadvantage of the known system is low efficiency due to uneven lifting and lowering of the water level over the system area in the wetting and drying mode, which is caused by the free pressure drop on the peripheral network sections due to significant local resistances.

The purpose of the invention is to increase the efficiency of the system by uniformly spreading the level of the groundwater level in the regimes of draining and moistening.

This goal is achieved by the fact that in the ameliorative system, the peripheral areas of the drainage and humidification network are equipped with absorbing wells, the upper mark of which corresponds to the drainage rate.

The wells are spaced apart from each other, decreasing from the center to the periphery in proportion to the pressure drop in the network.

FIG. 1 schematically shows a reclamation system, a section; in fig. 2 - the same plan view.

The ameliorative system consists of a pumping unit 1, a waterproof screen 2 and a closed drainage and humidification network in the form of a looped horizontal collector 3, to which drain lines 4 with absorbing wells 5 located on them are installed. The valve 7 installed on collector 3 in well 6 allows divide the drainage network into two separate zones. On collector 3 on either side of

gate valves 7, pipelines 8 and 9 are installed, which are connected to pumping station 1 by means of valve 10. Air is supplied with air

An aeration installation consisting of a pressure tank 11 and a compressor 12. At the ends of the collector 3, ending with the knee 13 of each zone, are installed the valves 14, located in the manhole 15. Communication between the

manhole and open channel 16 is carried out by means of a outlet 17.

The system works as follows.

When the need arises

the moistening of the root zone soil reclamation system with valve 7 is divided into two autonomous zones, valves 14 are closed. At the same time, the soil mass is constantly divided by the screen 2 into injection and suction zones. To one of the zones (for example, to the right) using the valve 10

 pump unit 1 is connected, pipeline 8 and the right part of the collector 3 operate in suction mode.

The left part of the system is connected via a pipe 9 to a pressure reservoir to a tank 11 of an aeration installation. Pump unit 1 supplies water, and compressor 12 forces air into pressure tank 11. Under the action of air pressure accumulating in the upper part of tank 11, aerated water flows through conduit 9 to collector 3 and from it is distributed to drains 4.

Absorbing wells 5, installed on the collector-drainage network, have a water intake capacity of 6-10 times higher than the main soil of the system, and reduce the local resistance of the seepage flow. As a result of raising the water level in the wells to their elevations, the subsequent process of pressure spreading of the water column occurs. The level of water rise in the humidification zone is determined by the level of water in the well. The frequency of the absorbing wells, sufficiently located along the collector-drainage network, ensures an even rise in the water level throughout the system.

Claims (2)

1. Meliorative system for ed. St. No. 1049614, characterized in that, in order to increase work efficiency by providing a uniform groundwater level control system in the drainage and humidification modes, the peripheral sections of the drainage and humidification network are equipped with absorbing wells, the upper mark of which corresponds to the drainage rate. 2. The system by π. 1, characterized in that the absorbing wells are located at distances from each other, decreasing from the center to the periphery in proportion to the pressure drop in the network.