Water supply system reconstruction in Turka (7260 inhabitants), Lviv Region taking into account the measures of shore protection of the Stryi River
Students Name: Vyshnevetskyi Dmytro Oleksandrovych
Qualification Level: magister
Speciality: Water Supply and Sewerage System
Institute: Institute of Civil Engineering and Building Systems
Mode of Study: full
Academic Year: 2020-2021 н.р.
Language of Defence: ukrainian
Abstract: Vishnevetsky D.O., Gnativ R.M. Reconstruction of the water supply system in Turka, Lviv region. (7260 inhabitants) taking into account the shore-strengthening of the River Stryi. Master’s qualification work. – Lviv Polytechnic National University, Lviv, 2020. Extended annotation The project of reconstruction of the water supply system of the city of Turka was carried out and a combined economic and drinking industrial and fire ring water system was designed. The water supply network is designed for maximum estimated consumption and the network is connected for three settlement cases. The diameters of the updated pipelines were determined at maximum cost and economic speed. Estimated cost estimated for specific water consumption. The source of water supply to the city of Turka accepted groundwater, namely the river Stryi. This source is the most reliable in terms of efficiency and safety. One of the most important tasks in the field of water management of Ukraine is to protect areas and settlements from floods and floods. Of all the ways of shore-strengthening the most effective for the conditions of the River Stryi selected fortifications with the help of gabions an important advantage of which is their flexibility, which is very useful on the reservoirs with current and with the possibility of ground feeding under the fastening, through which the gabions occupy a new, more stable position and at the same time there is no destruction of the entire fastening. Gabions are three-dimensional designs of factory manufacturing, made of galvanized metal mesh (double-tire with hexagonal links or wicker mesh with square holes) and divided into sections using aperture, which are installed inside the gabions through each meter in length. The paper describes the scientific researches of the effectiveness of strengthening the banks with gabions and ways to install and fasten it. Literary sources of changes in hydromorphology of Stryi were studied Assessment of the source information (rows of annual flow of water and sediments, maximum consumption of spring flooding and rain floods, minimal runoff) showed that economic activity in the upper reaches of the river Stryi (riverbed quarries, collapse of the riverbed, intensive plowing of land, etc.) has a significant impact on the runoff of sediments in the spread of a sharp reduction in the maximum costs of supply runoff. Extraction of gravel-pebble sediments, which is often carried out under the pretext of clearing the rolls, elimination of sediments and islets in order to prevent the negative impact of floods, is not always grounded on the geoecological side. In practice, such activity not only leads to the reduction of the local base of erosion, destruction of banks and deterioration of water quality, but also adversely affects spawning migration and spawning of fish in the basin of the River Stryi. In the study of hydrological and hydrogeological regimes in the direction of stryi received the following results: 1. Reducing the speed of flow in quarry pits contributes to the accumulation of pollutants in the bottom depending. 2. In conditions of regulation of the River Stryi, correctional and deepening works of the bottom of the river restore the natural functions of rolled and contribute to the improvement of the transfer of sediments. 3. After stopping the development of sand and gravel mixture (CSG), the distribution of speeds over the quarry notch becomes more uniform A set of hydrotechnical measures to improve water quality is proposed, namely: 1. Clearing and adjusting the channel. 2. Correction of the riverbed with its protection from erration and shore-strengthening measures for the device of gabions. 3. Improvement of factors of natural regulation of runoff, which include ironiness, wetliness and lakeiness of the basin. These factors are natural drainage batteries, and therefore reduce the value of maximum runoff. 4. Development of agrotechnical measures (deep pecking, planting forest strips, etc.), which contribute to the increase of porosity and water permeability of soils and improved water infiltration, resulting in reduced surface runoff. The object of the study is the River Stryi and its banks Subject of study – Design of protection, correction of the river bed with its protection from erration and shore-strengthening measures The purpose of the study is to analyze the factors influencing the change of the longitudinal profile of the riverbed and the formation of flood and the selection of the optimal method of shore-strengthening for the River Stryi. Results of the study. 1. It is determined what shore-strengthening measures are needed. 2. More economical and environmental method was found. 3. Found which method of shore strengthening will be more durable. 4. The advantages and disadvantages of selected shore-strengthening cleaning methods have been identified 5. The results provide an opportunity to prevent in the future to receive losses for the national economy Keywords – gabionoy, Stryi, riverbed, hydromorphology. List of used literature 1. DSanPiN 2.2.4-171-10 (DSanPiN 2.2.4-400-10). Hygienic requirements for drinking water intended for human consumption.. 2. Petrochenko V.I. Methodology of justification and calculation of parameters of shore-strengthening coatings of mountain rivers / V.I. Petrochenko, O. V. Petrochenko // Problems of water supply, drainage and hydraulics – scientific and technical collection of issue No. 16. – KNUBA, Kyiv. – 2011. – P. 149-158. 3. Klymenko V.G. Hydrology of Ukraine / V.G. Klymenko. – Kharkiv, 2010. – 124 p. 4. River Bank Protection Amrapalli Garanaik Joel Sholtes CIVE 717 – April 11. -2013. – 20 g. 5. CDOT Drainage Design Manual Bank Protection CHAPTER 17 BANK PROTECTION. – 2013. – 77 p.