SU1490106A1 - Method of preparing areas to agricultural development - Google Patents

Abstract

The invention relates to the field of ameliorative and agricultural land improvement using sapropel. The purpose of the invention is to accelerate the input of land into agricultural circulation and reduce labor costs. When a sapropel sump is built into it, sapropels are oriented into the embankment dam limiting the sump length in the direction perpendicular to the direction of the prevailing winter winds, and after the flush is completed, as the sapropel shrinks, the top of the embankment damming is cut to the sump length . 2 Il.

Description

The invention relates to measures for land reclamation and land improvement with sapropelles.

The aim of the invention is to accelerate the land drive into agricultural use and reduce labor costs.

Figure 1 shows the map of the alluvion plan; figure 2 - section aa in figure 1.

The method is carried out as follows.

Zemsnar house. 1, sapro pellets are developed and washed along pulping pipeline 2 into a settling tank 3, the length of which is limited by dams 4 and width by dams 5. In the settling basin 3 sapropels are deposited, clarified water is supplied through well 6, and the dams 4 are oriented perpendicular to the direction of the steppes x winds . At the end

the sapropel 7 layer shrinks all over the layer of B, and the top of the embankment dam is successively cut with a bulldozer 9 to the level of sapropel, ensuring that the snow is blown away by the wind, thus increasing the depth of the sapropel.

When creating areas for agricultural development after winter freezing, dam 5 is cut to the level of sapropels and a general layout is made, after which these areas are put into agricultural use.

At the site for the extraction of sapropel from Lake Nero, areas were prepared for injecting sapropel into settling tanks 100x200 m in size. The first site for development was prepared according to the proposed technology, and the second one - according to the known method.

4 WITH

05

The dams embankment of the settling tanks were raised to a height of 2 m. Alluvium was carried out by the dredge house 31 1-1-350.

Dam embankments were cut to the level of washed sapropel in the direction perpendicular to the direction of the prevailing winds at one site. The snow layer was 10-15 cm. The depth of freezing is 1.8 m.

On the 2nd control section, the embankment dams were erected without orientation. In this area, a bed of 20x20 m was chosen, where snow was periodically cleared during the winter of 1984-1985 and 1985-1986. On the cleared site, the freezing depth was 1.1 m, in the rest of the (uncleanable) area, the snow layer was 40-50 cm, the depth of freezing is 30-40 cm.

Thus, the conducted study has shown that the 1st plot may be introduced into agricultural land14901064

Studies have shown the possibility of a significant reduction in the complexity of the process, reducing the area of alienated land.

Claims (1)

Invention Formula The method of preparing areas for agricultural development, including the construction of a settling tank for sapropel inlets, discharging clarified water and freezing during the winter period, characterized in that, in order to speed up the introduction of land into agricultural use and reduce labor costs, embankment dams limiting the length of the settling tank , oriented in the direction perpendicular to the direction of the prevailing winds in the winter, and after completion of the alluvium, as the sapropel shrinks, the top of the amb about The first turn of the year was an alluvial sweep, limiting the length of the otopian, and the 2nd section - only a steward to a level that settled down for 2-3 years to a saprose. .7 e, 8 6. j. .