Improving the methods to improve the stability of hydrotechnical structures in Yakutia

2020 ◽  
pp. 37-39
Author(s):  
M LOSKIN
Keyword(s):  
Agricultural Production ◽  
Hydraulic Engineering ◽  
Process Water ◽  
Small Rivers ◽  
Limiting Factor ◽  
Safe Operation ◽  
Central Yakutia ◽  
Agricultural Water Supply ◽  
Temperature Impact ◽  
The Stability

Problems of providing the population and agricultural production by qualitative potable and process water in the Central Yakutia are covered. This territory belongs to the region with acute shortage of water resources which is always a limiting factor of development of agricultural production. For the solution of this burning issue in the 80th years of the last century along the small rivers the systems of hydraulic engineering constructions providing requirements with process water practically of all settlements of the Central Yakutia were constructed. At a construction of all hydraulic engineering buildings the method of construction with preservation of soils of the basis of constructions in a frozen state was applied. When warming the climate which is observed in recent years hydraulic engineering constructions built in regions of a wide spread occurance of breeds of an ice complex and with the considerable volume of water weight, were especially vulnerable. On character and a design they experience continuous threat of damage and demand very attentive relation from the operating organizations. Taking this into account, safe operation of hydraulic engineering constructions in a zone of distribution of permafrost breeds demands new approaches. The article examines features of hydraulic engineering constructions’ operation of agricultural water supply objects in the Central Yakutia. Distinctiveness of hydraulic engineering constructions’ operation is that stability of constructions is intimately bound to temperature impact of a reservoir on ground dams’ body and the basis of constructions. The possibility of inclusion of ways for an intensification of a freezing of constructions in the structure of operational actions is studied. The new method on safe operation of hydraulic engineering constructions as prewinter abatement of the water level in a reservoir accounting volumes and norms of water consumption of the settlement is offered.

CLIMATE CHANGE PROCESSES THAT AFFECT THE SUSTAINABILITY OF GEOSYSTEMS (IN THE EXAMPLE OF CENTRAL YAKUTIA)

2021 ◽  
pp. 22-28
Author(s):  
M. I. LOSKIN ◽  
◽  
S. P. GOTOVTSEV ◽  
S. A. PAVLOVA
Keyword(s):  
Climate Change ◽  
Agricultural Land ◽  
Irrigation System ◽  
Extreme Weather ◽  
Extreme Weather Events ◽  
Small Rivers ◽  
Taiga Zone ◽  
Central Yakutia ◽  
Weather Events ◽  
The Stability

In Central Yakutia, compared with the seventies of the XX century. the average annualair temperature increased by 2,5-3,0°C. Against the background of climate warming, which provoked extreme weather events, degradation of ground ice, the water regime of small rivers and forested areas changed, which affected the stability of geosystems located in the basins of small rivers. On the example of the Ebe estuary irrigation system located in Central Yakutia,studies were carried out to establish the causes of the occurrence of processes associated with climate change that affect the stability of geosystems. The increasing incidence of extreme weather events, changes in precipitation and temperature indicators lead to a decrease in the yield of agricultural land, disruption of the life of rural areas. Excessive holding of flood waters in a forced mode in order to protect the residential and social sector of the settlement located in the downstream pool from flooding led to the destruction of the gateway regulator of the estuary irrigation system. The main reason for the overstandard holding of the gateway regulator in forced mode in order to avoid the threat of flooding of the settlement was the backwater from the mouth of the river. Haar Balagan, which slows down the outflow of flood waters downstream. According to the research results, it can be assumed that one of the negative processes that negatively affect the stability of geosystems is an increase in the depth of seasonal thawing under conditions of climate change under forests in the taiga zone of Central Yakutia, which, in the studies carried out, provoked a decrease in the stability of the ameliorative agricultural landscape and disruption of the life support of the settlement.To reduce the risks of these negative phenomena, it is necessary to take a set of preventive adaptive measures to climate change, including the study of the climatic variability of the flow of small rivers and technical solutions for its regulation. Сlimate change, hydraulic engineering, estuary irrigation, Central Yakutia, spring floods, stability of geosystems.

scholarly journals How Much Is Enough? First Steps to a Social Ecology of the Pergamon Microregion

Land ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 479
Author(s):  
Julian Laabs ◽  
Daniel Knitter
Keyword(s):  
Carrying Capacity ◽  
Agricultural Production ◽  
Large Population ◽  
Future Research ◽  
Limiting Factor ◽  
Cultural Dynamics ◽  
Imperial Period ◽  
Self Sufficiency ◽  
Complementary Region ◽  
The City

In this study, we present a transparent and reproducible approach to model agricultural production with respect to environmental characteristics and available labour. Our research focuses on the city of Pergamon and its surroundings, with an emphasis on the transition between the Hellenistic and Roman Imperial Period, where widespread demographic changes took place. We investigated the degree of local self-sufficiency using different concepts of a city’s complementary region. Using simple topographic derivatives, we derive a measure of environmental suitability that we translate into a carrying capacity index. Our results show that workforce was not a limiting factor for local self-sufficiency. However, environmental carrying capacity may have been limiting in a scenario with a large population. An active investment into the environment, e.g., by the construction of terraces, could have helped to increase the degree of self-sufficiency. Future research should investigate the level of resilience of such a coupled socio-ecological system in relation to environmental and socio-cultural dynamics.

The Stability Analysis of Slope of Shegang Protecting Dyke

2011 ◽  
Vol 261-263 ◽  
pp. 1841-1845
Author(s):  
Hui Qin Yao
Keyword(s):  
Stability Analysis ◽  
Working Conditions ◽  
Saturation Line ◽  
Dam Safety ◽  
Design Code ◽  
Embankment Dam ◽  
Safe Operation ◽  
Calculation Results ◽  
The Stability ◽  
Reinforcement Design

Appraisal of dam slope safety is essential for security and stability of the dyke that has been constructed for many years. According to the requirements of the appraisal of dam safety, the stability analysis of slope of Shegang dyke has been carried out by using Sweden circular-arc method, Bishop method, Engineer Corps method and Lowe method four methods under many kinds of working conditions and some conditions when the saturation line raising. Combined with the design code form embankment dam, the calculation results can be analyzed. The analysis can show that the security indexes of anti-slide under four kinds of working conditions and some conditions when the saturation line raising meet the requirements of the design code. This can provide basis for the reinforcement design of the dam, which also has a certain directive significance for the safe operation and observation of the dam in the future.

Temperature Impact on the Stability of Wetting Water Films on Quartz Surfaces

2018 ◽  
Vol 75 (3-4) ◽  
pp. 102-107 ◽  
Author(s):  
S. I. Evdokimov ◽  
T. E. Gerasimenko ◽  
V. S. Evdokimov
Keyword(s):  
Water Films ◽  
Temperature Impact ◽  
The Stability

Summary of the Stability Chanllenges and Safe Operation of Power Systems in View of Dispatching

2014 ◽  
Vol 960-961 ◽  
pp. 1588-1591
Author(s):  
Xiang Dong Zhao ◽  
Xin Zhao ◽  
Ming Jun Lv ◽  
Jian Guo Liu ◽  
Feng Zhen Liu ◽  
...  
Keyword(s):  
Power Systems ◽  
Power System ◽  
Rapid Development ◽  
Power Grids ◽  
System Stability ◽  
Stable Operation ◽  
Safe Operation ◽  
The Stability ◽  
Continuous Power ◽  
Grid Market

The Internet and the gradual implementation of the continuous power grid market in recent years make the power system more complex under different operating environment. Safe and stable operation of power grids have become increasingly important . With the rapidf development of the grid and constant innovation, safe and stable operation also has a new requirement , because the rapid development of the power system brings more This paper analyzes the causes of blackouts and reviews security of the power system stability problems related to measures on the security and stability of the power system operation .

The Stability of Agricultural Production

1984 ◽  
Vol 27 (5) ◽  
pp. 66-84
Author(s):  
I. Zagaitov ◽  
P. Polovinkin
Keyword(s):  
Agricultural Production ◽  
The Stability

Optimization Study on Stability of Dragline Stripping Bench and Mining Parameters of Dragline Stripping Technology

2011 ◽  
Vol 361-363 ◽  
pp. 183-187
Author(s):  
Xiao Ren Mei
Keyword(s):  
Coal Mine ◽  
Limit Equilibrium ◽  
Influence Factors ◽  
Safe Operation ◽  
Surface Coal Mine ◽  
Optimization Study ◽  
Operation Parameters ◽  
The Stability ◽  
Safety And Stability ◽  
High Bench

Heidaigou Surface Coal Mine (HSCM) is a large surfaces coal mine that first uses the throwing blasting - dragline stripping technology. Lots of new demanding prompt solution issues appears in HSCM without any successful experience in China, such as the stability of dragline stripping bench, the design and implementation of throwing blasting parameters, and the optimization of dragline stripping technology parameters. Rigid Body Limit Equilibrium Method (RBLEM) was used to study the safety and stability of dragline solid high bench and dragline stripping loosen bench under different workface parameters and influence factors. The safe operation parameters of dragline stripping bench are proposed. The dozer lowered height of the stripping bench, the width of extended bench and dragline operation parameters are optimized using the Optimization System of Dragline Stripping Technology (OSDST). The results can provide the decision support for HSCM.

3D Simulation Analysis of Sedimentation of Superhigh Fill

2015 ◽  
Vol 744-746 ◽  
pp. 400-406
Author(s):  
Bi Hong Song ◽  
Jin Chao Yang ◽  
Qing Chen ◽  
Jian Hua Chen ◽  
Da Li
Keyword(s):  
Simulation Analysis ◽  
3D Simulation ◽  
Project Design ◽  
Stable Operation ◽  
Mountainous Areas ◽  
Safe Operation ◽  
Road Base ◽  
The Stability ◽  
Simulated Calculation ◽  
Topographic Relief

The sedimentation deformation of superhigh fill in the mountainous areas is very complicated in law, and will be influenced the topographic relief, and it is specially outstanding for the sedimentation of high-fill project. For the significant project such as airport and road base, in order to guarantee the safe operation of the project during use, it is required to strictly control the post-construction and uneven sedimentation. Therefore, the stability of superhigh fill has become the key to influence the safety and stable operation of projects. In this paper, a simulated calculation is conducted to the ultrahigh fill of expansion project of an airport in Chongqing to analyze its stability, so as to provide references for the project design and construction.

GROWTH AND BIOCHEMICAL RESPONSES ON CORN PLANTS CULTIVATED IN SOILS CONTAMINATED WITH CADMIUM AND ZINC

2017 ◽  
Vol 16 (2) ◽  
pp. 193
Author(s):  
LORENA GABRIELA ALMEIDA ◽  
ADELCIO DE PAULA JORGE ◽  
EDER MARCOS DA SILVA ◽  
PAULO CÉSAR MAGALHÃES ◽  
HUGO RAFAEL BENTZEN SANTOS ◽  
...  
Keyword(s):  
Trace Elements ◽  
Agricultural Production ◽  
Synergistic Effects ◽  
Limiting Factor ◽  
Corn Plant ◽  
Physiological Mechanisms ◽  
Specific Behavior ◽  
Biochemical Responses ◽  
High Concentrations ◽  
Corn Plants

Contamination with trace elements is characterized by an abiotic stress that represents a limiting factor in agricultural production. As cadmium (Cd) and Zinc (Zn) are physically and chemically similar, they can interact with the environment, causing antagonistic or synergistic effects. In this sense, physiological mechanisms to exclude detoxify or compartmentalize the excess of those trace elements is crucial for the survival of the vegetables when they are exposed to high concentrations of those elements. To comprehend the responses of the species sensible to the presence of Cd and Zn, this study aims to access the behavior of corn plants (Zea mays) cultivated in Cambisoils and Latosol with growing concentrations of Cd/Zn in a 21 days period. We performed growth and biochemical analyzes like antioxidant enzyme SOD, CAT and APX activity, hydrogen peroxide and lipidic peroxidation. Our data showed the specific behavior of cultivated corn plant in each of the soils analyzed. We observed that the interaction between both the elements resulted in a synergistic effect, negatively influencing all the analyzed parameters.  

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