STUDY OF LABOR COSTS FOR INSTALLATION OF THE HDPE GEOMEMBRANE OF THE RECHARGEMENT COVERING OF THE LANDFILL №5 OF THE KYIV REGION

Abstract

The article presents the results of studies of labor costs for the complex process of installation of the HDPE geomembrane of the multifunctional reclamation cover of Site No. 1 of the landfill site No. 5 in the village of Pidhirtsi Obukhiv district, Kyiv region. These studies also correspond to the direction of the scientific work of the Department of Construction Technologies of the Kyiv National University of Construction and Architecture on the topic "Creation of an algorithm and an electronic database for determining time standards for construction processes" (DR No. 0121U108931), scientific supervisor prof. Tonkacheev G.M.
HDPE membrane of the AGRU company, 1.5 mm thick, 5.0 m wide, 100 m long, was used for the research. The research was carried out in the area of sector №2 during the laying of a 5x100 m roll geomembrane with an area of 500 m2. 60% of the site was a horizontal surface, and 40% was a 180 degree slope.
The timing was used to determine the duration of the following technological operations: unloading geomembrane rolls from a truck with an excavator; moving one roll of geomembrane to the installation site with an excavator; unpacking, rolling, stacking with trimming and leveling of the geomembrane with an excavator; placement of ballast bags with sand to hold the geomembrane (loading); dust removal of geomembrane seams before welding; welding of geomembrane panels with a double seam; inspection of geomembrane seams with a pressure of up to 2 atm, elimination of detected weld defects, applying patches to inspection sites.
The experimental laying of the membrane was carried out on a 500 m2 (10 x 50 m) area of the landfill, marked with outriggers for gas drainage - 30 cm (crushed gravel fraction 20-40 mm), without the use of a geotextile layer. According to the research results, labor costs for laying 100 square meters of structured HDPE geomembrane with a thickness of 1.5 mm amounted to 4.982 man-hours, in addition, the working time of the excavator was 1.50 machine-hours.