Pub Date : 2022-09-08DOI: 10.32962/0235-2524-2021-2-6-11
Yurij M. Kosichenko, O. Baev, A. Garbuz
The purpose of the work: comprehensive reconstruction, including the reconstruction of the irrigation network and increasing water availability, increasing the efficiency (efficiency) and ensuring guaranteed receipt of agricultural products; modernization-provides for the replacement and renewal of individual elements of the GTS. To select the most appropriate option, the target function is used, taking into account the given costs for the reconstruction or modernization of the system, the profits from irrigation of agricultural crops and the indicators of the technical level of the system. Based on the technical and economic comparison, four options were considered: complex and partial reconstruction; modernization of irrigation systems and current repairs. According to the objective function, the optimal version of the sys-tem is selected based on the minimum cost reduced to the estimated year. Carrying out a comprehensive reconstruction will increase the availability of water resources to the system to 100 %, increase the main indicators of the technical condition of the system: KZI – more than 90 %, efficiency-up to 0.85-0.95, the depth of siltation of the ground water level-more than 2.5-3.5 m, will ensure guaranteed receipt of agricultural products-up to 90-100 %. Among all the variants, the objective function is the smallest for complex reconstruction. Partial reconstruction provides for certain types of work, which allows to increase the water supply of the system to 60-80 %, KZI - to 0.60-0.80, efficiency-to 0.80, guaranteed production of up to 80 %. The option of modernization of irrigation systems gives the same values of indicators as for partial reconstruction. We consider two examples of calculating the objective function, where the minimum value was obtained for both variants of the complex reconstruction. The algorithm of computer calculations for choosing the optimal option is developed.
{"title":"ASSESSMENT OF INTEGRATED RECONSTRUCTION AND MODERNIZATION IRRIGATION SYSTEMS","authors":"Yurij M. Kosichenko, O. Baev, A. Garbuz","doi":"10.32962/0235-2524-2021-2-6-11","DOIUrl":"https://doi.org/10.32962/0235-2524-2021-2-6-11","url":null,"abstract":"The purpose of the work: comprehensive reconstruction, including the reconstruction of the irrigation network and increasing water availability, increasing the efficiency (efficiency) and ensuring guaranteed receipt of agricultural products; modernization-provides for the replacement and renewal of individual elements of the GTS. To select the most appropriate option, the target function is used, taking into account the given costs for the reconstruction or modernization of the system, the profits from irrigation of agricultural crops and the indicators of the technical level of the system. Based on the technical and economic comparison, four options were considered: complex and partial reconstruction; modernization of irrigation systems and current repairs. According to the objective function, the optimal version of the sys-tem is selected based on the minimum cost reduced to the estimated year. Carrying out a comprehensive reconstruction will increase the availability of water resources to the system to 100 %, increase the main indicators of the technical condition of the system: KZI – more than 90 %, efficiency-up to 0.85-0.95, the depth of siltation of the ground water level-more than 2.5-3.5 m, will ensure guaranteed receipt of agricultural products-up to 90-100 %. Among all the variants, the objective function is the smallest for complex reconstruction. Partial reconstruction provides for certain types of work, which allows to increase the water supply of the system to 60-80 %, KZI - to 0.60-0.80, efficiency-to 0.80, guaranteed production of up to 80 %. The option of modernization of irrigation systems gives the same values of indicators as for partial reconstruction. We consider two examples of calculating the objective function, where the minimum value was obtained for both variants of the complex reconstruction. The algorithm of computer calculations for choosing the optimal option is developed.","PeriodicalId":136110,"journal":{"name":"Melioration and Water Management","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130188300","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-08DOI: 10.32962/0235-2524-2021-2-26-29
Yuri Hopkalov
The article presents the main stages of the formation of the Volga Research Institute of Hydraulic Engineering and Land Reclamation, the prospects for the development of research activities. The main directions of research and development work of the leading scientists of the institute are given.
{"title":"DEDICATED TO THE 55TH ANNIVERSARY OF THE VOLZHA SRI OF HYDRAULIC ENGINEERING AND RECLAMATION. STAGES OF FORMATION AND CONTRIBUTION TO THE DEVELOPMENT OF RECLAMATION IN THE POVOLGA REGION","authors":"Yuri Hopkalov","doi":"10.32962/0235-2524-2021-2-26-29","DOIUrl":"https://doi.org/10.32962/0235-2524-2021-2-26-29","url":null,"abstract":"The article presents the main stages of the formation of the Volga Research Institute of Hydraulic Engineering and Land Reclamation, the prospects for the development of research activities. The main directions of research and development work of the leading scientists of the institute are given.","PeriodicalId":136110,"journal":{"name":"Melioration and Water Management","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115973017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-08DOI: 10.32962/0235-2524-2021-2-17-25
A. Kozhanov, Vyacheslav Schedrin
The aim of the research is to develop an algorithm for calculating the combined closed drainage and humidification network as part of the drainage and humidification systems. The technical literature was used as the main source material for the calculation of closed collectors of drainage systems and closed pressure pipelines. The construction of the algorithm was carried out in accordance with the provisions of GOST 19.701-90 (ISO 5807-85). To develop a general algorithm for calculating a combined closed drainage and humidification network, a procedure was drawn up for calculating the lengths of collector sections according to the ac-cepted diameters and a procedure for calculating the diameters of humidifying pipelines in the form of an algorithm, while the calculated dependencies were used from publicly available sources. A calculation scheme for a combined closed drainage and humidification network and a form for outputting the calculation results have been developed. The developed algorithm includes the calculation of the diameters of the collectors for the drainage drainage and the diameters of the humidification pipelines for supplying water for humidification, as well as the coordination of the diameters of the drainage collectors and humidification pipelines
本研究的目的是开发一种算法来计算作为排水和加湿系统一部分的封闭排水和加湿网络。以技术文献为主要资料，计算了排水系统的封闭集热器和封闭压力管道。算法的构建按照GOST 19.701-90 (ISO 5807-85)的规定进行。为了开发一种用于计算封闭排水和加湿联合网络的通用算法，根据公认的直径制定了计算集热器段长度的程序，并以算法的形式制定了计算加湿管道直径的程序，而计算的依赖关系则来自公开可用的来源。提出了封闭排水加湿联合管网的计算方案和计算结果的输出格式。所开发的算法包括用于排水的集热器直径和用于加湿供水的加湿管道直径的计算，以及排水集热器直径和加湿管道直径的协调
{"title":"ALGORITHM FOR CALCULATING THE COMBINED CLOSED DRAINAGE AND HUMIDIFICATION NETWORK AS PART OF THE DRAINAGE AND HUMIDIFICATION SYSTEMS","authors":"A. Kozhanov, Vyacheslav Schedrin","doi":"10.32962/0235-2524-2021-2-17-25","DOIUrl":"https://doi.org/10.32962/0235-2524-2021-2-17-25","url":null,"abstract":"The aim of the research is to develop an algorithm for calculating the combined closed drainage and humidification network as part of the drainage and humidification systems. The technical literature was used as the main source material for the calculation of closed collectors of drainage systems and closed pressure pipelines. The construction of the algorithm was carried out in accordance with the provisions of GOST 19.701-90 (ISO 5807-85). To develop a general algorithm for calculating a combined closed drainage and humidification network, a procedure was drawn up for calculating the lengths of collector sections according to the ac-cepted diameters and a procedure for calculating the diameters of humidifying pipelines in the form of an algorithm, while the calculated dependencies were used from publicly available sources. A calculation scheme for a combined closed drainage and humidification network and a form for outputting the calculation results have been developed. The developed algorithm includes the calculation of the diameters of the collectors for the drainage drainage and the diameters of the humidification pipelines for supplying water for humidification, as well as the coordination of the diameters of the drainage collectors and humidification pipelines","PeriodicalId":136110,"journal":{"name":"Melioration and Water Management","volume":"116 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114603625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-08DOI: 10.32962/0235-2524-2021-2-41-45
L.Zh. Nastueva
The article describes the design and operation of an installation for hydraulic research and a pneumohydraulic reversible installation for calibration and laboratory research to determine the flow characteristics of drainage components. Theoretical dependencies, methodological and practical recommendations for the use of the developed devices are presented.
{"title":"Development of a stand for laboratory studies of the hydraulic characteristics of devices with through holes","authors":"L.Zh. Nastueva","doi":"10.32962/0235-2524-2021-2-41-45","DOIUrl":"https://doi.org/10.32962/0235-2524-2021-2-41-45","url":null,"abstract":"The article describes the design and operation of an installation for hydraulic research and a pneumohydraulic reversible installation for calibration and laboratory research to determine the flow characteristics of drainage components. Theoretical dependencies, methodological and practical recommendations for the use of the developed devices are presented.","PeriodicalId":136110,"journal":{"name":"Melioration and Water Management","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121838486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-08DOI: 10.32962/0235-2524-2022-3-36-39
V. Shalanin
The paper describe application of the variational principle of minimum curvature in the development of a new method for design form spillway piers. Result of the study - new theoretical method was obtained for calculating the shape of a curvilinear piers noses with an equal effect on the carrying capacity, but having a smaller area and lower costs for building materials and construction of the structure. Analyze of the original calculation method shows that the widespread statement was found that, under equal boundary conditions, the profile constructed according to the shape of a circular arc has the smallest dimensions. Computer modeling was carried out and an analysis was made of the influence of the shape of the head of the support on the throughput of the structure.
{"title":"The variational principle of minimum curvature in the design of spillway piers","authors":"V. Shalanin","doi":"10.32962/0235-2524-2022-3-36-39","DOIUrl":"https://doi.org/10.32962/0235-2524-2022-3-36-39","url":null,"abstract":"The paper describe application of the variational principle of minimum curvature in the development of a new method for design form spillway piers. Result of the study - new theoretical method was obtained for calculating the shape of a curvilinear piers noses with an equal effect on the carrying capacity, but having a smaller area and lower costs for building materials and construction of the structure. Analyze of the original calculation method shows that the widespread statement was found that, under equal boundary conditions, the profile constructed according to the shape of a circular arc has the smallest dimensions. Computer modeling was carried out and an analysis was made of the influence of the shape of the head of the support on the throughput of the structure.","PeriodicalId":136110,"journal":{"name":"Melioration and Water Management","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130443458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-08DOI: 10.32962/0235-2524-2021-2-36-40
V. Zhelyazko, V. Lukashevich
The main scientific, practical and environmental aspects of land irrigation are presented, and its feasibility and efficiency in Belarus are substantiated. The main directions of increasing the efficien-cy of irrigation in the Republic of Belarus at the current stage have been developed, taking into ac-count the combination and differentiation of various types and methods of melioration for specific areas with the use of resource-saving and environmental technologies.
{"title":"Scientific-practical and environmental aspects of land irrigation in Belarus","authors":"V. Zhelyazko, V. Lukashevich","doi":"10.32962/0235-2524-2021-2-36-40","DOIUrl":"https://doi.org/10.32962/0235-2524-2021-2-36-40","url":null,"abstract":"The main scientific, practical and environmental aspects of land irrigation are presented, and its feasibility and efficiency in Belarus are substantiated. The main directions of increasing the efficien-cy of irrigation in the Republic of Belarus at the current stage have been developed, taking into ac-count the combination and differentiation of various types and methods of melioration for specific areas with the use of resource-saving and environmental technologies.","PeriodicalId":136110,"journal":{"name":"Melioration and Water Management","volume":"262 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131960860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-20DOI: 10.32962/0235-2524-2022-1-22-26
A. Komissarov, A. Hafizov, M. Ishbulatov, A. Khazipova
The article provides an analysis of the current state and prospects of irrigated agriculture in the Republic of Bashkortostan. The possibility of neutralizing the risk of adverse weather conditions and providing the population of the republic with food by increasing the irrigated areas in Bashkortostan by 7 times is shown. The volumes of local runoff water as a whole provide the irrigation norms necessary for irrigating areas that guarantee the food security of the population of the republic. However, in the context of a trend towards climate aridization, it is necessary to carry out research work on the productive use of local runoff for irrigation. The technical condition of the irrigation systems of the republic requires their reconstruction, taking into account modern innovative technologies and irrigation techniques. It is necessary to conduct research and develop scientific methods for the introduction of modern innovative technological and technical means of irrigation.
{"title":"Current state and prospects for the development of irrigated agriculture in the Republic of Bashkortostan","authors":"A. Komissarov, A. Hafizov, M. Ishbulatov, A. Khazipova","doi":"10.32962/0235-2524-2022-1-22-26","DOIUrl":"https://doi.org/10.32962/0235-2524-2022-1-22-26","url":null,"abstract":"The article provides an analysis of the current state and prospects of irrigated agriculture in the Republic of Bashkortostan. The possibility of neutralizing the risk of adverse weather conditions and providing the population of the republic with food by increasing the irrigated areas in Bashkortostan by 7 times is shown. The volumes of local runoff water as a whole provide the irrigation norms necessary for irrigating areas that guarantee the food security of the population of the republic. However, in the context of a trend towards climate aridization, it is necessary to carry out research work on the productive use of local runoff for irrigation. The technical condition of the irrigation systems of the republic requires their reconstruction, taking into account modern innovative technologies and irrigation techniques. It is necessary to conduct research and develop scientific methods for the introduction of modern innovative technological and technical means of irrigation.","PeriodicalId":136110,"journal":{"name":"Melioration and Water Management","volume":"237 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123999161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-20DOI: 10.32962/0235-2524-2022-1-32-38
E. Kamenetsky, A. Radionov, V. Timchenko
To analyze the seasonal and long-term variability of the normalized relative vegetation index NDVI, the multichannel MODIS spectroradiometer measurements with a 10x10 km resolution over a 20-year period of time are used. On the territory of the RNO-Alania in the foothill areas and on the plains near the border of the Stavropol Territory five geographical locations are selected, located at different distances from the Northern spurs of the Caucasian Ridge. For each geographical location the sets of time series are obtained for: 16-day NDVI composites, daily temperature at an altitude of 2 m and precipitation for the 20-years period from 01.01.2000 to 31.12.2019. By calculating the integral characteristic for an annual period of time for every location, the series of 20 annual values are obtained. According to the obtained series, three 20-year trends are built and the trend parameters of a first-order polynomial are calculated using the least squares method. The NDVI trend slope switch is observed in the Mozdok-Russkoe location for transition from the time period 2000–2009 to the period 2010–2019, when the slope changes from positive to negative. Similar NDVI trend slope switches are observed for other locations. This may be due changing the level of soil moisture over time, taking into account mainly the downward trends in precipitation. The trend slope of the NDVI integral characteristic 5–15 % increases with the increasing of the distance from the mountain ridge. The temperature trends for all locations are ascending, that indicates an average increase of the number of warm days from year to year. At the same time, the maximum temperature during the summer period does not significantly increase. The trend of the integral characteristic for the amount of precipitation is mainly downward. However, its specific values have a fairly large spread, which means that the amount of precipitation varies significantly from year to year. In addition, the amount of precipitation decreases with distance from mountain ridges. These factors should be taken into account when choosing agricultural products for cultivation and planning additional land-reclamations in the flat and foothill areas on the south of the Russian Federation.
{"title":"THE ANALYSIS OF SATELLITE MEASUREMENT OF THE VEGETATION INDEX IN THE FOOTHILL AND PLAIN AREAS OF THE RSO-ALANIA","authors":"E. Kamenetsky, A. Radionov, V. Timchenko","doi":"10.32962/0235-2524-2022-1-32-38","DOIUrl":"https://doi.org/10.32962/0235-2524-2022-1-32-38","url":null,"abstract":"To analyze the seasonal and long-term variability of the normalized relative vegetation index NDVI, the multichannel MODIS spectroradiometer measurements with a 10x10 km resolution over a 20-year period of time are used. On the territory of the RNO-Alania in the foothill areas and on the plains near the border of the Stavropol Territory five geographical locations are selected, located at different distances from the Northern spurs of the Caucasian Ridge. For each geographical location the sets of time series are obtained for: 16-day NDVI composites, daily temperature at an altitude of 2 m and precipitation for the 20-years period from 01.01.2000 to 31.12.2019. By calculating the integral characteristic for an annual period of time for every location, the series of 20 annual values are obtained. According to the obtained series, three 20-year trends are built and the trend parameters of a first-order polynomial are calculated using the least squares method. \u0000The NDVI trend slope switch is observed in the Mozdok-Russkoe location for transition from the time period 2000–2009 to the period 2010–2019, when the slope changes from positive to negative. Similar NDVI trend slope switches are observed for other locations. This may be due changing the level of soil moisture over time, taking into account mainly the downward trends in precipitation. The trend slope of the NDVI integral characteristic 5–15 % increases with the increasing of the distance from the mountain ridge. The temperature trends for all locations are ascending, that indicates an average increase of the number of warm days from year to year. At the same time, the maximum temperature during the summer period does not significantly increase. The trend of the integral characteristic for the amount of precipitation is mainly downward. However, its specific values have a fairly large spread, which means that the amount of precipitation varies significantly from year to year. In addition, the amount of precipitation decreases with distance from mountain ridges. \u0000These factors should be taken into account when choosing agricultural products for cultivation and planning additional land-reclamations in the flat and foothill areas on the south of the Russian Federation.","PeriodicalId":136110,"journal":{"name":"Melioration and Water Management","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129283174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-20DOI: 10.32962/0235-2524-2022-1-3-10
K. Baymanov, R. Baymanov
The article presents the results of long-term field studies of the re-formation of water courses in the zone of the Takhiatash hydroelectric complex. It was noted that due to low water, for a significant part of the year, the Takhiatash dam worked with fully closed gates in all spans. In these years, the role of regulating the level regime of the shield dam is almost lost, and the end regulators of the main channels are regulated. The data of comparison of actual expenses, turbidity and back-up at the Takhiatash hydroelectric power plant with the calculated ones are presented. It is proved that sharp fluctuations in the water level in front of the dam and water intake into the channels lead to changes in the hydraulic and alluvial regime of the shield dam and channels. As the analysis of the survey of the riverbed cross-sections in the headwaters of the Takhiatash hydroelectric complex showed, in the initial period of operation, the bottom marks in the upper stream are increasing and the bottom marks in the lower stream are decreasing. Further years of operation (after 1982) were characterized by the stability of the flowing riverbed processes, that each characteristic year has its own level and consumption regime. It is noted that in high-water years there were no difficulties with water intakes, and the main difficulties are associated with the passage of flood flows through the shield dam. In recent years, there has been a rapid rise in the water level in the upper reaches, despite all the open dam gates, shipping locks and water intake structures, which are explained by the influence of the drifted streams on the capacity of the shield dam. It is proved that without any damage to the water intake during the growing season, it is possible to effectively flush the upstream with a constant decrease in the water intake coefficient - Kv < 0.55. Practically, this means for the Takhiatash hydroelectric unit that the flushing flow rate should not be lower than Q ≥ 250 – 300 m3/s.
{"title":"A study of the re-shaping of the backwaters of low-pressure hydrosystems in the lower reaches of lowland rivers","authors":"K. Baymanov, R. Baymanov","doi":"10.32962/0235-2524-2022-1-3-10","DOIUrl":"https://doi.org/10.32962/0235-2524-2022-1-3-10","url":null,"abstract":"The article presents the results of long-term field studies of the re-formation of water courses in the zone of the Takhiatash hydroelectric complex. It was noted that due to low water, for a significant part of the year, the Takhiatash dam worked with fully closed gates in all spans. In these years, the role of regulating the level regime of the shield dam is almost lost, and the end regulators of the main channels are regulated. \u0000The data of comparison of actual expenses, turbidity and back-up at the Takhiatash hydroelectric power plant with the calculated ones are presented. It is proved that sharp fluctuations in the water level in front of the dam and water intake into the channels lead to changes in the hydraulic and alluvial regime of the shield dam and channels. As the analysis of the survey of the riverbed cross-sections in the headwaters of the Takhiatash hydroelectric complex showed, in the initial period of operation, the bottom marks in the upper stream are increasing and the bottom marks in the lower stream are decreasing. Further years of operation (after 1982) were characterized by the stability of the flowing riverbed processes, that each characteristic year has its own level and consumption regime. It is noted that in high-water years there were no difficulties with water intakes, and the main difficulties are associated with the passage of flood flows through the shield dam. In recent years, there has been a rapid rise in the water level in the upper reaches, despite all the open dam gates, shipping locks and water intake structures, which are explained by the influence of the drifted streams on the capacity of the shield dam. It is proved that without any damage to the water intake during the growing season, it is possible to effectively flush the upstream with a constant decrease in the water intake coefficient - Kv < 0.55. Practically, this means for the Takhiatash hydroelectric unit that the flushing flow rate should not be lower than Q ≥ 250 – 300 m3/s.","PeriodicalId":136110,"journal":{"name":"Melioration and Water Management","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125994789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-20DOI: 10.32962/0235-2524-2022-1-17-22
Maxim Lapushkin, G. Vasilyeva, N. Lukyanova
When implementing projects for reclamation of lands contaminated with chemicals, the problem of choosing methods and technologies for performing work arises. The article discusses the methodology of risk assessment as a decision-making tool when choosing technologies for land reclamation. The calculation of the risk and its assessment are given on the example of a land plot contaminated with polychlorinated biphenyls near OOO «Serpukhov Condenser Plant «KVAR» in the city of Serpukhov, Moscow Region.
{"title":"Risk assessment as a decision-making tool in remediation of land contaminated with chemicals","authors":"Maxim Lapushkin, G. Vasilyeva, N. Lukyanova","doi":"10.32962/0235-2524-2022-1-17-22","DOIUrl":"https://doi.org/10.32962/0235-2524-2022-1-17-22","url":null,"abstract":"When implementing projects for reclamation of lands contaminated with chemicals, the problem of choosing methods and technologies for performing work arises. The article discusses the methodology of risk assessment as a decision-making tool when choosing technologies for land reclamation. The calculation of the risk and its assessment are given on the example of a land plot contaminated with polychlorinated biphenyls near OOO «Serpukhov Condenser Plant «KVAR» in the city of Serpukhov, Moscow Region.","PeriodicalId":136110,"journal":{"name":"Melioration and Water Management","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117217615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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