SU1372009A1 - Method of constructing enclosed horizontal pipeline - Google Patents

Abstract

This invention relates to the field of land reclamation. The purpose of the invention is to simplify the construction of the pipeline and reduce the volume of earthworks during its laying at a great depth in flooded soil. The trenchless plowing machine, moving along the pipeline route along planned route 1, lays down the drainage 2 of the 1st rus of drainage. Drain 2 lowers the groundwater level from domestic 3 position to intermediate 4. Drain water is discharged from drain 2 into a higher-order drainage collector, into a digging hole for mechanical pumping or into a receiving basin. In dry ground, the 1st Russian 5 trenches are torn off with a shelf device for a subsequent cavalier. On the drained and planned path at the bottom of 1st tier 5 trench, the draining layer passes again and lays the drainage tide 6 of the 2nd trenching drain, which lowers the groundwater level from position 4 to position 7, etc. At the bottom of the last drying stage, a closed horizontal pipeline 12 and its structures are laid, drains are connected to it and the drying grounds are laid with the excavated soil. 1 il. S (l

Description

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The invention relates to the field of land improvement and can be used in the construction of closed drainage collectors and main pipelines.

The purpose of the invention is to simplify the construction of the pipeline and reduce the volume of earthworks during its laying at a great depth in flooded soil.

The drawing shows a trench with a pipeline laid in it, a cross-section, the rushes of preliminary draining of the flooded soil behind covered horizontal drains and trench fragments (for example, the construction of a closed drainage collector with a diameter of 500 mm and a depth of 5 m at a depth of 1 m from ground water surface of the earth).

The method is carried out as follows.

Construction is carried out using earth-moving machines, such as a single-bucket excavator or scraper, a trenchless plowing machine, an ETR-204 trench excavator, a truck crane and a bulldozer.

The trenchless plowing machine moves along the pipeline route along planned path 1 and, at a depth of 3.0 m, closes the horizontal drainage 2 of the first drainage floor, which lowers the groundwater level from the domestic 3 to the intermediate 4 position (from a depth of 1 m to, for example, 2.5 -3.0 m). Drainage water is discharged from the drain 2 into a higher-order drainage manifold, into a digging hole for mechanical pumping or into a water intake, and the like. In the drained soil of the first rus, the first rus 5 trenches are torn off with an excavator or scraper to a depth of, for example, 1.5 m with a shelf device for a subsequent cavalier. By drained and planned path at the bottom of the first.

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The trench trench 5 again passes the trenchless plowing truck and places the closed drainage 6 of the second drying trough, which lowers the groundwater level from intermediate position 4 to position 7. This allows the scraper or excavator to open the trench to a depth of, for example, 3 meters and prepare a path for moving the trenchless draining machine with laying the drainage of the third rus for dewatering to a depth of, for example, 6.0 m and lowering the water table from 15 to position 7 to position 10. After

This trench excavator tears off a third Russian trench 11 with dumping excavated material onto the shelf of the first Russian trench 5.

Claims (1)

20 At the bottom of the third trench 11 of the trench, located at a depth of 5.0 m and dried drain 9, the closed horizontal pipeline 12 and its structures (25 boats, etc.) are connected by a truck crane, connect drains 6 and 9 to the pipeline 12 , the drain 2 is removed for reuse and the Russes 11, 8 and 5 are filled up with trenches with excavated soil 13. Claims The method of construction of a closed horizontal pipeline, including the preliminary drainage of soil jf along the pipeline route, a fragment of a trench, installation of the pipeline and structures on it and backfilling of the trench with excavated soil, is characterized in that, in order to simplify 4C pipeline construction technology and reduce the volume of earthworks when it is laid at a great depth in flooded soil, the preliminary drainage and trench extract are carried out in full over the entire length of the trench, while each Russian is dried with closed g rizontalnoy drains placed within the width limits and below the bottom tier of the trench.