scholarly journals Increasing of filtration characteristics of ore bodies in borehole uranium mining

2020 ◽  
Vol 168 ◽  
pp. 00014
Author(s):  
Bayan Rakishev ◽  
Zhiger Kenzhetayev ◽  
Asel Shampikova ◽  
Bakytzhan Toktaruly
Keyword(s):  
Experimental Work ◽  
Uranium Mining ◽  
Optimal Parameters ◽  
Chemical Reagents ◽  
Chemical Type ◽  
Ore Bodies ◽  
Geological Conditions ◽  
Before And After ◽  
Degree Of Extraction ◽  
Borehole Mining

There is a description of technology by borehole uranium mining in Kazakhstan. The factors which affect for reduction of filtration characteristics in productive reservoirs are studied in detail and described an effective method for increasing borehole uranium production. The processes that occur during borehole mining of uranium with the use of sulfuric acid as solvent, as well as the conditions and reasons for reducing the productivity of geotechnical wells during their operation are considered. The results of experimental work on the intensification of borehole uranium mining in complex mining and geological conditions are analyzed and discussed, comparative graphs of the content of uranium in the productive solution, the flow rate of wells, the degree of extraction and the volume of production before and after the experiments are constructed. The results of experimental work on the efficiency of borehole uranium production, the content of uranium in PS and the productivity of wells, with predominance of the chemical type of sedimentation, are positively evaluated. The optimal parameters for the intensification of borehole uranium production in complex mining and geological conditions are recommended, and method for using complex of multi-purpose chemical reagents in combination with traditional methods of well regeneration is developed.

scholarly journals Hazard Assessment Comparison of Tazhiping Landslide Before and After Treatment

2017 ◽  
Author(s):  
Dong Huang ◽  
JianPing Qiao ◽  
Meng Wang
Keyword(s):  
Mass Movement ◽  
Characteristic Parameters ◽  
Treatment Results ◽  
Movement Process ◽  
Landslide Mass ◽  
Geological Conditions ◽  
Soil Deposits ◽  
Before And After ◽  
High Hazard ◽  
Volume Method

Abstract. Through investigation and analysis of geological conditions and mechanical parameters of the Taziping landslide, the finite volume method was adopted, and, the rheological model was adopted to simulate the landslide and avalanche entire mass movement process. The present paper adopted the GIS platform to simulate the mass movement process before and after treatment. This paper also provided the conditions and characteristic parameters of soil deposits (thickness, speed, and stresses) during the landslide mass movement process and mapped the 3D division of hazard zones before and after landslide treatment. Results indicated that the scope of hazard zones contracted after engineering treatment of the landslide. The extent of high-hazard zones was reduced by about 2/3 of the area before treatment, and characteristic parameters of the mass movement process after treatment decreased to 1/3 of those before treatment. Despite engineering treatment, the Taziping landslide still poses significant hazard to nearby settlements. Therefore, we propose that houses located in high-hazard zones be relocated or reinforced for protection.

Animals as Means of Evaluating Pasture Production

1948 ◽  
Vol 1948 (01) ◽  
pp. 7-21 ◽  
Author(s):  
S. J. Watson
Keyword(s):  
Experimental Work ◽  
Live Weight ◽  
Experimental Period ◽  
Early Years ◽  
Sheep Grazing ◽  
Pasture Production ◽  
Experimental Station ◽  
The World ◽  
Before And After ◽  
Agricultural Literature

The use of the animal as a means of evaluating pasture is an obvious approach to the problem, since this is the form in which the practical man will ultimately measure the return from his grassland. If anything has to be sacrificed it is the sward and not the animal, a point too often overlooked in our grassland work generally. Though many grazing trials of an observational nature are to be found in the early agricultural literature, the earliest experimental work was most probably that of the late Sir William Somerville. When Professor of Agriculture at Newcastle in 1897, he commenced the world-famous experiment at Cockle Park Agricultural Experimental Station on pasture improvement. An effort was then made to measure the effect of various systems of manuring in terms of the live-weight increase of sheep grazing on the different plots. In this experiment on Tree Field the relative values of the different systems of manuring were measured by weighing the sheep before and after the experimental period. In the early years the plots were stocked with hoggs, but in order to get closer grazing lambs and ewes are now used and have shown greater increases per acre.

scholarly journals Influence of technogenic factors on the engineering and geological conditions of the gas plant territory in the Orenburg region

2020 ◽  
Vol 164 ◽  
pp. 01021
Author(s):  
Nadezhda Korvet ◽  
Maria Zavodchikova ◽  
Marina Lazdovskaya
Keyword(s):  
Oil And Gas ◽  
Technogenic Pollution ◽  
Test Results ◽  
Orenburg Region ◽  
Chemical Reagents ◽  
Geological Surveys ◽  
Geological Features ◽  
Geological Conditions ◽  
Irreversible Effect ◽  
Helium Plant

The engineering and geotechnical conditions of the site of the helium plant in the Orenburg region are characterized. The possibility of its technogenic pollution has been identified by the results of literary and stock sources, as well as by engineering and geological surveys. The reason for the formation of pollution sites is substantiated. This fact is confirmed by analyzes of assessing the composition of groundwater and the physicomechanical properties of loess soils that make up the upper part of the geological section. Groundwater is characterized by increased mineralization, which is mainly caused by the high content of sulfates, chlorides, magnesium and calcium. Also, there is an increased content of ammonia, the smell of gasoline. Studies of the soil properties showed that it almost lost subsidence properties, with the exception of isolated cases. The subsidence of individual soil samples taken from a depth of 13.0-20.0 m is inexplicable by natural causes due to the impossibility of steeping them, taking into account the hydrogeological conditions of the site. It indicates an irreversible effect of leaks of chemical reagents on the soil. The established engineering and geological features of soils and their behavior along the depth of the section are confirmed by test results presented in the form of tables and graphs. The presented information is of great practical and scientific importance for predicting changes in the characteristics of the geological environment during technogenic pollution at oil and gas facilities. The feasibility of amending regulatory documents for a detailed study of this problem in accordance with existing recommendations and scientific developments is proposed.

scholarly journals NONTHERMAL EFFECTS OF MOBILE PHONE RADIATIONS ON HUMAN HEART RATE, BLOOD PRESSURE, AND SUGAR LEVEL

2017 ◽  
Vol 10 (7) ◽  
pp. 142
Author(s):  
Basandrai D ◽  
Dhami A K ◽  
Bedi A K
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Mobile Phone ◽  
Experimental Work ◽  
Cell Phone ◽  
Human Heart ◽  
P Wave ◽  
St Segment ◽  
Before And After ◽  
Cell Phone Radiation

Objective: A single-blinded pilot study has been conducted to investigate the effect of cell phone radiation on the human heart. Methods: Experimental work has been conducted in Jalandhar-based hospital under the supervision of a cardiologist. During experimental work, electrocardiogram (ECG), blood pressure (BP) level, and sugar level have been examined before and after cell phone radiation exposure. For ECG analysis, the parameters such as heart rate, rhythm, mechanism, axis, P wave, PR interval, QRS complex, ST segment, T wave, and QT interval have been examined in the study.Results: No significant variations in the results of above-mentioned parameter has been observed before and after acute exposure of cell phones radiations by placing cell phone closer to heart.Conclusion: The result of this study concludes that mobile phone radiations do not interfere with any electrical activity of the human heart, BP, and sugar level in healthy individuals.

Dechlorination of large marine iron artifact using a novel technique involving impressed current

2015 ◽  
Vol 62 (4) ◽  
pp. 259-269
Author(s):  
Georgios Batis ◽  
Angeliki Zacharopoulou ◽  
Evgenia Zacharopoulou ◽  
Helene Siova ◽  
Vasilike Argyropoulos
Keyword(s):  
Organic Coating ◽  
Corrosion Products ◽  
Alkaline Solutions ◽  
Content Type ◽  
Conservation Treatment ◽  
Chemical Reagents ◽  
Before And After ◽  
Long Time ◽  
Electrochemical Chloride Extraction ◽  
Short Time

Purpose – This paper aims to develop an electrochemical dechlorination method for large objects in a short time, which were for a long time in the sea. Traditionally, in conservation, chlorides are extracted from marine iron artifacts using complete immersion of those objects in alkaline solutions with or without electrolysis. However, these techniques are time-consuming and very costly, especially when applied to large marine artifacts such as cannons and anchors. Design/methodology/approach – An appropriate sponge was chosen based on resistance to NaOH and the rate of exacted chlorides. Application of electrochemical dechlorination in situ and removal of chloride were measured by the scanning electron microscope (SEM)-EDAX method on the corrosion products and by titration of the electrolysis solution. X-ray diffraction (XRD) method is used for identification of corrosion products before and after application of electrochemical chloride extraction. Findings – The electrochemical chloride extraction (ECE) method is applied against the corrosion of reinforced concrete. From the authors’ research, it is obvious that ECE can successfully extract chlorides from dried large metallic objects exported from the sea. The method of ECE removes the majority of chlorides from the metal during conservation treatment so that the application of organic coating will allow the object to remain stable over a long period. Originality/value – A new methodology was developed for dechlorination of metallic objects exported from the sea in a short time and thus the consumption of chemical reagents was cut down.

The relative roles of theory and acquisition studies

2004 ◽  
Vol 31 (2) ◽  
pp. 505-507
Author(s):  
NICHOLAS SOBIN
Keyword(s):  
Language Acquisition ◽  
Experimental Work ◽  
Empirical Studies ◽  
Theoretical Issue ◽  
Theory Construction ◽  
Human Language ◽  
The Core ◽  
Before And After ◽  
Theoretical Question ◽  
Real Target

Radford (1988: 2) and others before and after have argued that the core theoretical question (i) ‘How are human languages structured?’ is logically prior to another core theoretical question (ii) ‘How are human languages acquired?’ This is said to be so because the answer to (i), the structure of human language, is the real target of question (ii) – language acquisition is about acquiring the structure of a human language. Thus, we can't ask about how a thing is learned before we know what it is. Bearing this dictum in mind, consideration of both Crain & Thornton (1998) (C&T) and the Drozd critique (present volume) raises an interesting question: is linguistic theory and the data on which it is established sufficiently developed to inform ‘external’ empirical studies in areas such as language acquisition? At this point, it isn't clear that it is. The data of theoretical linguistics is often idealized and sometimes rather narrow. A given construction may be narrowly investigated (cited) for its apparent interest as a side-light on another area or a more general theoretical issue rather than being investigated more fully/paradigmatically in its own right. Further, the latter sort of investigation might shed a very different light on a phenomenon only investigated narrowly. So paradoxically, it is often only in the context of doing experimental work such as acquisition or variation research that such fuller investigation takes place, possibly revealing new and crucial facts which may prove relevant to theory construction.

scholarly journals Development of Psychomotor Functions in Preschool Children With Intellectual Disabilities Through The Means of Correctional Eurhythmics

2021 ◽  
Vol 9 (SPE2) ◽  
Author(s):  
S.V. Arkhipova ◽  
M.S. Podshivalova
Keyword(s):  
Preschool Children ◽  
Intellectual Disabilities ◽  
Experimental Work ◽  
Preschool Education ◽  
Psychomotor Functions ◽  
Before And After

Results: The conducted study demonstrates a positive dynamic in the development of psychomotor functions in preschoolers with intellectual disabilities before and after conducting experimental work using the means of correctional eurhythmics. Discussion and conclusion: The collected data confirms that specially organized work using musical rhythmic games and exercises effectively contributes to the level of development of psychomotor functions in children with intellectual disabilities not only in the motor but also in the cognitive and emotional and volitional components. The prepared materials can be used by specialists and teachers of preschool education organizations interested in the development of psychomotor functions in preschool children with intellectual disabilities by the means of correctional eurhythmics.

scholarly journals GEODETIC SUBSTANTIATION OF THE SARYARKA COPPER ORE REGION

2020 ◽  
Vol 6 (444) ◽  
pp. 194-202
Author(s):  
M. Nurpeissova ◽  
◽  
M. Zh. Bitimbayev ◽  
К. В. Rysbekov ◽  
K. Derbisov ◽  
...  
Keyword(s):  
Survey Methods ◽  
Mining Industry ◽  
Geodetic Network ◽  
Mineral Resources ◽  
Geodetic Survey ◽  
Copper Ore ◽  
Seismic Surveys ◽  
Ore Bodies ◽  
Geological Conditions ◽  
Tectonic Features

. Information about copper deposits of Kazakhstan, development of which is carried out in the Saryarka region and its role in the development of the mining industry are considered in the article. Geological, structural and tectonic features of the deposits are presented. Research results on improvement methods of studying and geomechanical processes management in the development of mineral resources are presented. It is shown that the problem of geomechanical processes management can be solved on the basis of methodology for rock condition geomonitoring considered in this article, which provides comprehensive accounting and analysis of all natural and technogenic factors, as well as use of control tools developed by the authors. The article presents technical solutions to ensure operational safety during the development of Saryarka region field reserves, which occur in difficult mining and geological conditions. Ore bodies of the deposit have different sizes and are located at different depths, therefore, seismic surveys are carried out. The geodetic network of provisional seismic surveys at the field has been substantiated. It is proposed to conduct surveys using modern geodetic instruments, such as satellite technologies, electronic, digital geodetic instruments. The geodetic survey methods proposed by the authors provide information on the bowels of the earth with a high degree of accuracy.

scholarly journals Methods for intensification of borehole uranium mining at the fields with low filtration characteristics of ores

2021 ◽  
Vol 15 (3) ◽  
pp. 95-101
Author(s):  
Zhiger Kenzhetaev ◽  
Marzhan Nurbekova ◽  
Kuanysh Togizov ◽  
Moldir Abdraimova ◽  
Bakytzhan Toktaruly
Keyword(s):  
Sulphuric Acid ◽  
Hydrogen Fluoride ◽  
Mineralogical Composition ◽  
Uranium Mining ◽  
Industrial Safety ◽  
Phase Method ◽  
Uranium Deposits ◽  
Advantages And Disadvantages ◽  
Before And After ◽  
Ammonium Hydrogen

Purpose. Improving the efficiency of borehole uranium mining and the selection of special decolmating solutions to improve the filtration characteristics of the seam due to effective destruction, as well as by preventing the sedimentation in the productive horizon, depending on the mineralogical composition and structure of sediment-forming materials. Methods. The advantages and disadvantages of the main methods used for improving the filtration characteristics of the productive horizon, when mining the uranium deposits by the borehole method, have been studied. Samples of sedimentation from the productive horizon are taken at the uranium deposit of the Shu-Syrasu depression. The quantitative and qualitative parameters, as well as the peculiarities of the mineral compositions have been determined by the X-ray phase method. A methodology has been developed and laboratory experiments have been conducted on the treatment of sedimentation samples by the drop method using various compositions of selected decolmating solutions. The microscopic method is used to determine the structure and peculiarities of sedimentation before and after treatment with various decolmating solutions. Findings. The effectiveness of the main methods used to improve the filtration characteristics of seams in the uranium deposits, mined by the borehole method, has been determined. The structure and composition of sedimentation, which causes a decrease in the filtration characteristics of the productive horizon, have been determined. To destroy and prevent the sedimentation in the productive horizon, an effective composition of a special decolmating solution using ammonium hydrogen fluoride with the addition of sulphuric acid and surfactants has been selected. An effective method for increasing the filtration characteristics of the productive horizon with the use of special decolmating solutions has been developed and scientifically substantiated. Originality. The use of special decolmating solutions based on ammonium hydrogen fluoride with the addition of sulphuric acid and surfactants according to the developed methodology allows to effectively destroy and prevent sedimentation in the productive horizon of borehole uranium ore mining. Practical implications. The use of the developed decolmating solution and a special methodology for the intensification of borehole uranium mining can reduce the operating costs of its production. This increases the ecological and industrial safety of the work to intensify the leaching of uranium ores.

scholarly journals Optimization of Stope Structural Parameters Based on Mathews Stability Graph Probability Model

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Long Zhang ◽  
Jian-hua Hu ◽  
Xue-liang Wang ◽  
Lei Zhao
Keyword(s):  
Structural Parameters ◽  
Probability Model ◽  
Strip Width ◽  
Strip Mining ◽  
Equipment Operation ◽  
Drilling Equipment ◽  
Ore Bodies ◽  
Geological Conditions ◽  
Phosphate Mine ◽  
Stability Graph

Strip mining with subsequent filling is one of the main mining methods for gently inclined thin ore bodies. The production process of excavating alternate strips is beneficial to the safety of mining. Reasonable stope structural parameters are key to achieving safe and efficient mining. The Tiaoshuihe phosphate mine of Sanning Mining is taken as an example in this study. Based on precision finite element modeling and simulation, a reasonable width range and the interval value of the strip are determined. A reliable and efficient strip width is calculated by using the probability model of the improved Mathews stability graph method. The results show the following. Firstly, under the geological conditions and backfill environment of the Tiaoshuihe phosphate mine, the reasonable and safe strip width interval is 7–9 m. Secondly, the probabilities of open stope stability with strip widths of 7, 8, and 9 m are 88.55%, 86.76%, and 84.94%, respectively. The reasonable probabilities of stope stability with strip widths of 7 and 8 m are higher than 85%. Thirdly, combining this with the drilling equipment operation parameters, it is suggested that the best strip width is 7 m without increasing the strength of the backfill.

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