SU812878A1 - Method of fighting springtime floods - Google Patents

Description

(54) METHOD OF STRUGGLE AGAINST SPRING FLOORING

one

The invention relates to land reclamation, in particular to the operation of drainage and wetting systems.

There is a known method of dealing with spring flood by diverting a flood through ameliorative canals, which consists in clearing the canal sections in front of and behind the retaining structure (sluice, regulator pipe) from snow drifts 1.

Its disadvantage is the delayed discharge of flood waters through reclamation canals.

The purpose of the invention is the acceleration of water removal by increasing the capacity of the channels.

This goal is achieved by opening the mole cavity in its e-cover of the channel along its axis.

Mole cavity due to the large porosity of snow and its good stickiness. formed with resilient and permeable walls.

A molehill is created by a mounted or trailed mover that aggregates laterally to a cross-country (tracked) tractor.

The drawing shows the channel I, covered with snow 2, mole cavity 3, made above the bottom 4 of channel 1 in the snow 2.

Example. In the pre-spring period, an aggregate (a tractor with a draining machine) makes snow mole 2 in channel 1 at its bottom 4. As a result, a cavity 3 of a given size is formed in snow 2 at the bottom 4 of the channel. In the course of this snow formation, surface and groundwater flows. By entering a canal covered with snow in which a cavity has been made, water flows down the cavity into the receiving water without creating a high level in the canal. Therefore, in addition to surface runoff, groundwater also enters the channel. They have a temperature of t 2 ° C and above. As a consequence, the formation of a ground drain causes snow melting into the cavity made by the drains, increasing its throughput. The snowstorms, which are possible in the pre-spring period, do not have a negative effect, since the cavity is under a layer of previously fallen snow.

On drainage and humidification systems, the channels are covered with snow annually. Monitoring the work of land reclamation systems

and the spring period shows that, due to the introduction of snow by canals, there is a flooding of dry lands, which causes a partial loss of winter crops and a delay in planting up to 30 days. As a result, the yield is reduced by 20-30% or by 5-10 centners / ha, which results in a decrease in income by 50-100 rubles / ha.

Each year, 5-10% of drained land is affected by these factors. Providing optimal conditions for cultivating the land in such an area will provide a significant economic effect. Shsch

Claims (1)

Invention Formula A method of combating spring floods by diverting a flood through reclamation canals, characterized in that, in order to speed up the diversion of water by increasing the canal capacity, the mole cavity is opened in the snow cover of the canal along its axis. Sources of information taken into account during the examination 1. Tooth of V.M. Maintenance and repair of drainage systems. Minsk, 1963, p. 94-97 (prototype). $