Engineering work on the development of design and working documentation for GDS No.7 has been completed
Comprehensive surveys have been completed for the development of design and working documentation for the object "Reconstruction of electrical networks of gas distribution station No. 7 in Dnipro". The purpose of the work was to obtain initial data for the development and justification of design documentation, which provides for a design solution for the installation of technical facilities and/or the installation of appropriate equipment to ensure the supply of electricity to internal 6 kV networks and to the network of JSC "DTEK Dnipro Networks".
Among the field and office work performed, the following should be highlighted:
- Collection and systematization of materials of triangulation, trilateration and polygonometry networks by object;
- Search for polygonometry signs using devices;
- Complex engineering and geodetic surveys in built-up areas with drawing up a plan in M 1:500 with a relief section height of 0.5 m;
- Horizontal theodolite survey M 1:2000;
- Survey of underground communications using a pipe and cable finder;
- Creation of a topographic plan M 1:2000 with the location of objects, with the application of all sites, routes of engineering networks, boundaries of land plots with their cadastral numbers, boundaries of agricultural lands and green spaces;
- Creation of a topographic plan of the site of the GDS No. 7 site in Dnipro and GKS-Krasnopillya at a scale of 1:500.
Topographical and geodetic surveys
According to the results of the field survey of the initial geodetic points, three geodetic points on the ground were surveyed, the condition of external signs, centers, and their external design were determined. As a result of the work, it was found that the points of the existing DGM are suitable for use as control points when performing complex engineering surveys. The centers have coordinates in the conventional coordinate system of 1963. The heights of the center are determined in the Baltic height system of 1977.
In the process of performing complex engineering and geodetic surveys, the completeness and reliability of the plan of underground and aboveground communications was agreed with representatives of the Dnipro LVUMG LLC "Operator of the GTS of Ukraine".
Engineering and geological surveys
The task of the surveys was to study the geological structure, engineering-geological and hydrogeological conditions, and physical and mechanical properties of soils.
The following activities were carried out on the survey site:
- engineering-geological (hydrogeological) reconnaissance (route observations) with good cross-country ability;
- drilling of 25 wells up to 20m deep;
- sampling of soil samples for laboratory tests with subsequent conduct of a reduced set of their physical and mechanical properties, determination of soil corrosion activity, optimal humidity and density;
- sampling of groundwater with subsequent chemical analysis of water.
At all stages of the survey, technical quality control of the execution and acceptance of the completed works was carried out in order to check them at all stages of the technological cycle, compliance with the requirements of current regulatory and technical documents, compliance of the results of the performed works and their registration in accordance with the requirements of technical and technological instructions and the technical task, determination of the degree of readiness of the manufactured materials and their suitability for further design and for transfer to the Customer.
Quality control was carried out in accordance with the requirements of the Instructions on the procedure for control and acceptance of topographic, geodetic and cartographic works, and the Quality System based on the international standard ISO 9001.