SU1693195A1 - Meliorative system - Google Patents

Abstract

The invention relates to land reclamation, in particular to the construction of land reclamation systems. The purpose of the invention is to increase the efficiency of the reclamation system and reduce capital and operating costs. The ameliorative system includes a drainage channel and a pressure collector 2, to which the drain 3 is connected using check valves 4. To catch sediments coming along with the groundwater into the drains 3, under them are arranged the collectors made in the form of pockets-traps 7 And the drains 3 and the trap pockets 7 are hydraulically interconnected by means of tees 8. The drainage drain containing sediments gradually flows out of the sediments as it flows over each pocket 7 of the trap 7. until all the pockets 7 have been completely filled with sediment. 1 з п. Ф-лы, 2 Il.

Description

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The invention relates to land reclamation, namely to the construction of land reclamation systems.

The aim of the invention is to increase the efficiency of land reclamation systems and reduce capital and operating costs.

FIG. 1 shows the layout of the ameliorative system, top view; in fig. 2 shows section A-A in FIG. one.

The reclamation system includes a drainage channel (or pressure pipe) 1, pressure manifold 2 and drains 3 connected to it using check valves 4. To allow the reclamation system to function in irrigation mode, pressure collector 2 is equipped with regulating valves in the form of hydrants 5 for connecting sprinklers (not shown) and switching valves 6 for regulating the water supply to the pressure collector for irrigation. In order to trap sediments that come along with groundwater into drains 3, along the whole length of the sediments there are sosobotniki in the form of pockets-traps 7, which have the shape of cylindrical glasses with waterproof walls and bottom. The pockets of the traps 7 are arranged simultaneously with the passage of trenches for drains 3, for example, with an auto-drilling machine. The cavities of the pockets of the traps 7 are hydraulically communicated with the cavity of the drain 3 by means of tees 8. When determining the total volume of the pockets of the traps 7, the total volume of sediment entering the cavities of drains 3 is calculated for the estimated service life of the meliorative system (20-30 years). The operational experience of the closed drainage in the humid zone shows that the indicated calculated volume can be

Wp (1.5 ... 2.0) VgM3, where Vg is the volume of the drain cavity 3.

The volume of each pocket-trap 7, necessary for determining its dimensions, is determined from the condition

Vi V2 V3.

,

where n is the number of sites on the drain 3, equal to the number of pockets-traps 7.

The distance between the pockets-traps 7 depends on the intensity of sediment entry into drains 3 and can be taken as a multiple of the lengths of the latter, for example, in the area of 20 ... 50 m (depending on the length of the drain L),

Thus, the volume of each kerm in the trap 7 at the same distance

between them should be equal (ip a little more with a margin) to the volume of sediment that comes along with the drainage flow from the overlying section of length I.

The operation of the ameliorative system in the drainage mode is as follows.

During periods of snowfall (spring) and intense rain showers (summer, autumn), the excess groundwater from the core layer with a height h in the form of separate jets with soil particles and

iron enters the cavity drains 3 (through the gaps between the drainage tubes with a length of 333 mm). Further, streams of water, collected in a single stream, form a drainage drain, which flows by gravity into the pressure head.

the collector 2, and by gravity also through it - into the drainage channel (or pressure pipe) 1 when the valve 6 is open. The drainage drain containing sediments, when flowing over each pocket-trap 7, is gradually released from some part of the bottom pumps. Owing to the force of gravity, due to a larger specific gravity compared to water, they fall into the pockets of the trap 7, thus displacing the corresponding volume of water from them. The process of deposition of sediment from the drainage flow into the pockets of the trap 7 occurs until the latter is completely filled with sediment.

Claims (2)

Invention Formula 1, The ameliorative system, including a drainage channel, a pressure manifold with control valves and drains, coupled to it by means of reverse 5 valves, characterized in that, in order to increase operating efficiency and reduce injection and operating costs, the drains are provided with a nano-collector located under them 0 length, and drains and nososbornik hydraulically interconnected. 2. The ameliorative system according to claim 1, about tons of l - is based on the fact that the nanos-collectors have waterproof walls and a bottom. / V 1