SU987020A1 - Method of constructing a drying system - Google Patents

Description

The invention relates to land reclamation, in particular, to a method for the construction of closed drainage systems.

A drainage system is known, including a territory with a system of closed drains, formed by laying drains into the soil mass ..

The disadvantage of this system is a small amount of water flow from drains, especially when draining heavy clay GFUNT .;

There is also known a method of building a drainage system, including laying of drains and loosening the upper layer of soil and ground (| 2j.

The disadvantage of this method is that with an insignificant increase in the water flow from the drains, the complexity and cost of building the system arises, since with considerable depth of the soil the carrying capacity of the soil decreases, mainly in the middle between drains, where the influence of the latter is not felt.

The purpose of the invention is to reduce the cost, system construction and increase productivity.

The goal is achieved by the fact that according to the method

the soil layer is loose with variable depth, decreasing to the middle of the interdiscipline.

The drawing shows a drainage system, a general view.

The drainage system includes a drainage 1 with backfilling 2 and soil and soil, loosened with 3 rippers 4 variable depth H and non-loosened 5

10 with a surface convex to the middle distance between drains 1.

The proposed drainage system is constructed as follows.

15

Lay the closed drainage through the excavator-doenoukladchika. Then the soil is loosened at an angle in the plan of 60-90 to the direction of drains 1. For this purpose,

20 a ripper 4, hinged by means of a parallelogram hinge on a base tractor, equipped with an automatic speed control system depending on the load on

25 working body, for example hydromechanical transmission. In the process of loosening the depth H regulate the minimum mid-distance between drains to the maximum

Claims (2)

30 directly above drains 1. It is advisable to choose 50–60 cm, –a Н х - 1–1.2 m, but less than the depth of laying of drains 1 by 10–15 cm. As the depth of loosening decreases, the tractor speed automatically increases . When loosening is carried out immediately after the laying of drains 1, their location is determined by backfill 2. With subsequent loosening, the road is marked on the ground. The drainage system works as follows. The water in the soil moves to closed drains 1. The volume of the drain from the drains is determined by the filtration and water return of the upper loosened 3 layers, which are higher than the un-activated 5 layers. The shape of the surface of the loosened 5 layer convex to the middle corresponds to the shape of the depression curve when the groundwater levels draw down, so drains 1 have a structural effect on the entire loosened 3 layer. The use of the invention allows, compared with loosening at a constant depth of 5060 cm, to increase the volume of runoff from drains 1.2-1.3 times and increase the speed of drainage to a depth of 20-30 cm by 1.41, 6 times compared to loosening to a constant depth of 1–1.2 m, reduce energy consumption and increase productivity in the construction of the system by 1.8–2 times, compared with the laying of closed drainage without conducting deep loosening on heavy soils, the drain flow increases by 2–2.5 times, the drying rate to a depth of 20-30 cm in 2.8-3.2 times. Claims A method of constructing a drainage cHCxeN & j, comprising laying down drains and loosening an upper layer of soil, characterized in that, in order to reduce the cost of building a system and increasing productivity, the upper layer of soil is loosening with a variable depth decreasing towards the middle. Sources of information taken into account in the examination 1.Murashko A.I. Plastic drainage, Minsk, Harvest, 1969, p.113. 2. Experience of using deep loosening during the draining of heavy mineral soils. Survey information TSBNTI Minvhokhoz USSR, 1978, No. 15, p.10 (prototype). - .. .- -h. " one- ; ; |: v; / ..l: r ;,: J;.