Клімов, С. В. та Klimov, S. V. (2018) ЗМЕНШЕННЯ УЩІЛЬНЕННЯ ҐРУНТУ ПРИ БУДІВНИЦТВІ ГОРИЗОНТАЛЬНОГО ТРУБЧАСТОГО ДРЕНАЖУ БЕЗТРАНШЕЙНИМ СПОСОБОМ. Вісник Національного університету водного господарства та природокористування (1(81)). с. 12-22.

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Анотація

В статті наводиться аналіз основних конструктивних рішень зі зменшення ущільнення ґрунту в навколодренній зоні при будівництві горизонтального трубчастого дренажу безтраншейним способом. В огляді наведені приклади як існуючих дреноукладачів з пасивним робочим органом різних країн, так і перспективні розробки в даному напрямку.

Title in English

PREVENTION OF SOIL COMPACTION IN THE CONSTRUCTION OF HORIZONTAL TUBULAR DRAINAGE BY THE TRENCHLESS METHOD

English abstract

In the article the analysis of the main constructive solutions for reducing the compaction of soil in the near-drain zone at the construction of horizontal drainage from pipes by drainage plows is given. The trenchless installation is promising in the construction of drainage systems, especially taking into account its significant advantage over the trench-type way of productivity and labor costs. The experience of Europe, Africa, Asia, and America indicates a lower cost using drainage plows with a construction drainage depth of 1.3 to 1.4 meters, which is explained by a much higher rate of insertion. In the Netherlands, at depths of drainage from 1.0 to 1.2 m and diameters of pipes to 0.08 m, the difference is from 15 to 25%. However, the advantage of this method of insertion decreases rapidly with increasing depth of insertion of drainage and increase of the resistance of cutting of soil. However Drainage Straight Leg Plow at more crytical depths will result in soil compaction in the walls and bottom of the crack, which reduces soil watertightness in these zone and adds additional resistance to inflow water in the drains. The review gives examples of both existing drainage-plows of different countries and promising developments in this direction. It was shown that the Mastenbroek VPlow drainage guide avoids soil compaction and creates favorable conditions for inflow water in drains. This is due to the loosening of the soil above the drain, increasing its volume with the bulging on the day surface and the absence of soil compaction zones by redirecting compression forces from the horizontal to the vertical plane. The V-plow can insert pipes with a maximum external diameter, including protective-filtering material, from 0.10 to 0.125 meters. The V-plow in different soils (semi-unstable, in medium textured and fine textured soils) allows you to obtain better indicators than the usual drainage plows and drainage trenchers. However the advantage of trenchless installation decreases rapidly with greater drain depth and with higher soil resistance. It works best in clay loam and clay, worse in sand.

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