Relative coherent stacking potential of fundamental particles of illite-smectite and its relationship to geological environment

Clay Minerals ◽  
2012 ◽  
Vol 47 (3) ◽  
pp. 319-327 ◽  
Author(s):  
Il-Mo Kang ◽  
S. Hillier ◽  
Yungoo Song ◽  
In-Joon Kim
Keyword(s):  
Particle Growth ◽  
Growth Conditions ◽  
Mineral Deposits ◽  
Average Thickness ◽  
Geological Environment ◽  
Short Supply ◽  
Fundamental Particles ◽  
Geological Conditions ◽  
Detrital Particles ◽  
Mathematical Relations

AbstractInterstratified illite-smectite (I-S) occurring authigenically in diverse earth crust environments reacts toward more illite-rich phases as temperature increases. For that reason, I-S is used for geothermometry when prospecting for hydrocarbons or ore mineral deposits. This study develops the mathematical relations for characterizing the coherent stacking potential of fundamental particles (FP) using the expandability ratio K, where K is defined as (%SMAX –; %SXRD)/%SMAX. The ratio can be applied to differentiating I-S samples from shales, bentonites, and hydrothermal alterations. In particular, patterns on a K vs. T diagram, where T is the average thickness of fundamental particles (FPs), appear to be indicative of the geological conditions related to I-S formation. Shale samples plot in the negative K domain of the diagram, possibly due to the intimate mixing of detrital particles. Both bentonitic and hydrothermal samples display trends of increasing K with T, which suggests the coherent stacking potential progressively decreases as FPs increase in thickness. Hydrothermal samples are more extensively distributed on the diagram than samples from bentonites. This result may reflect differences in particle growth conditions (nutrients and space) between bentonites (short supply) and hydrothermal alterations (good supply).

scholarly journals Dynamics of Engineering and Geological Conditions of Mineral Deposits (from Exploration to Exploitation)

2021 ◽  
Vol 20 (3) ◽  
pp. 222-228
Author(s):  
I.V. Abaturova ◽  
◽  
L.A. Storozhenko ◽  
E.D. Nugmanova ◽  
V.S. Kozlov ◽  
...  
Keyword(s):  
Large Scale ◽  
Human Life ◽  
Surrounding Medium ◽  
Mineral Resources ◽  
Mineral Deposits ◽  
Geological Environment ◽  
Geological Time ◽  
Geological Processes ◽  
Geological Conditions ◽  
Further Development

The development of mineral deposits has strong transformative effect on the geological environment. At the same time, all the components of geotechnical conditions (relief, structure of rock massifs, hydrogeological and geocryological conditions etc.), formed over a long geological time, are actively changing. Geological processes are activated and new mining-geological processes are formed. New strata are formed on the Earth's surface along with the technogenic formations and technogenic deposits. Today, the scale of technogenesis in mining is comparable to the results of geological activities that have been going on for many millions of years. The reaction of the geological environment is immediate and is expressed in the development of large-scale engineering and geological processes, which often do not allow the further development of mineral resources and threaten the human life. Therefore, even at the early stages of prospecting and/or exploration, it is necessary to understand the dynamics of changes in surrounding medium in order to develop methods for proper managing of the ore extraction. By the example of a number of objects, all the stages of study of engineering-geological conditions are considered, the dynamics of their change, which led to the formation of engineering-geological processes affecting the further development of mineral resource, is estimated.

scholarly journals Improving the criteria for choosing the strategies in management by geotechnical systems

2019 ◽  
Vol 109 ◽  
pp. 00048
Author(s):  
Yevhen Lapshyn ◽  
Robert Molchanov ◽  
Borys Blyuss ◽  
Nataliia Osadcha
Keyword(s):  
Game Theory ◽  
Optimal Strategy ◽  
Optimal Strategies ◽  
Mineral Deposits ◽  
Underground Space ◽  
Infrastructure Development ◽  
Main Indicator ◽  
Geological Conditions ◽  
Geological Faults

The conclusion has been made about the necessity to choose the optimal strategies for management by geotechnical systems, based on the analysis of geological faults, which are the main indicator of the mining and geological conditions that characterize the mineral deposits, as well as on the parameters for the infrastructure development of the underground space. The methodological peculiarity of solving the problems set is the use of game theory with modified criteria of Wald, maximax and Savage, since the manifestation of specific geological faults is probabilistic in nature. When choosing the optimal strategy, the average linear deviations of gains or risks are taken into account.

scholarly journals The choice of mining development strategy based on the improved Bayes criterion

2020 ◽  
Vol 168 ◽  
pp. 00053
Author(s):  
Yevhen Lapshin ◽  
Borys Blyuss ◽  
Serhii Dziuba ◽  
Larysa Tatarko
Keyword(s):  
Decision Making ◽  
Initial Data ◽  
Development Strategy ◽  
Economic Efficiency ◽  
Development Strategies ◽  
Mineral Deposits ◽  
Mining Operations ◽  
Acceptable Range ◽  
Geological Conditions

The choice of mining development strategies is based on the main indicators of mining and geological conditions that characterize mineral deposits. The purpose of the research is to argue the application of the improved Bayes criterion when choosing rational mining development strategies by taking into account the complex mining and geological conditions. The methodology of decision-making in terms of managing geotechnical systems depends on whether or not the probabilities of the conditions and dynamics of the parameters of rocks and soils are known during the development of mineral deposits, as well as the construction of infrastructure facilities. If the probabilities are unknown, then there is the problem of making decisions in the conditions of uncertainty of the initial data to assess the efficiency of the mining enterprises. And if the probabilities are known, then we are dealing with the task of making decisions in conditions of risk and assess the safety of mining operations. The improvement of the Bayes criterion enables us to determine, with an acceptable range of changes in efficiency, a strategy which provides more likely an increase in economic efficiency compared to a strategy selected using the traditional Bayes criterion.

Assessment of Geological Environment Bearing Capacity of Fengjie New Town Based on AHP

2014 ◽  
Vol 501-504 ◽  
pp. 318-322
Author(s):  
Jie Hu ◽  
Le Yang ◽  
Hai You Peng ◽  
Xiu Wen Ren
Keyword(s):  
Bearing Capacity ◽  
Great Difficulty ◽  
Geological Environment ◽  
Assessment Index ◽  
New Town ◽  
Regional Feature ◽  
Geological Conditions ◽  
High Investment ◽  
Assessment Index System ◽  
City Construction

Because of the problems, such as bad geological conditions, great difficulty of construction, and high investment cost, Fengjie new Town has changed the location three times in reservoir resettlement project. Considering the geological and regional feature, this paper first constructs the assessment index system of geological environment bearing capacity; and then obtains the weights of assessment indexes based on AHP; finally through extracting, analyzing and processing the of assessment indexes by means of GIS, gets the zone map of geological environment bearing capacity of Fengjie County Town. The results not only provide an evidence for the construction plan for Fengjie new Town, but also provide a reference for relocated cities of similar reservoir areas and city construction of hilly and mountainous areas.

scholarly journals Sequence of studying engineering and geological conditions of mineral deposits from exploration to development

2020 ◽  
Vol 7 (7) ◽  
pp. 83-91
Author(s):  
Irina V. Abaturova ◽  
◽  
Ivan A. Savintsev ◽  
Liubov A. Storozhenko ◽  
Elvina D. Nugmanova ◽  
...  
Keyword(s):  
Large Scale ◽  
Geological Environment ◽  
Geological Time ◽  
Protective Measures ◽  
Early Stages ◽  
Geological Processes ◽  
The Earth ◽  
Geological Conditions ◽  
Geological Information ◽  
Further Development

geological environment. Actively change all the components of engineering-geological conditions (EGC), formed during the long geological time: the topography, structure of rocks, hydrogeological and permafrost conditions, are formed by geological processes and, at the same time on the surface of the Earth formed a new strata of man-made structures, and often man-made deposits. The scale of technogenesis in mining today is comparable to the results of geological activity that took place over many millions of years. Therefore, even at the early stages of studying the EGC MD, it is necessary to understand the dynamics of changes in the EGC in order to provide preliminary protective measures. Purpose of work. Consideration of striking examples of the dynamics of the EGC MD (from exploration to development), in order to provide methods for managing these changes. Methodology. The article considers the stages of obtaining engineering and geological information for the period of MD operation, which will solve the problems of rational use of the subsoil and protection of the geological environment. Results. For example, the number of objects marked all the stages of learning to yoke the dynamics of their changes, which led to the formation of engineering-geological processes that adversely affect the further testing of MD. Summary. The reaction of the geological environment in the development of MD is not long in coming and is expressed in the development of large-scale engineering and geological processes, which often do not allow further development of MD and threaten people's lives. Therefore, even at the early stages of studying the EGC MD, it is necessary to understand the dynamics of changes in the EGC in order to provide preliminary protective measures.

scholarly journals Model for Bacteriophage T4 Development inEscherichia coli

1999 ◽  
Vol 181 (5) ◽  
pp. 1677-1683 ◽  
Author(s):  
Avinoam Rabinovitch ◽  
Hilla Hadas ◽  
Monica Einav ◽  
Zeev Melamed ◽  
Arieh Zaritsky
Keyword(s):  
Standard Deviation ◽  
Burst Size ◽  
Bacteriophage T4 ◽  
Growth Conditions ◽  
Wild Type ◽  
E Coli ◽  
Phage Development ◽  
Dependent Parameter ◽  
Mathematical Relations ◽  
Infected Bacterium

ABSTRACT Mathematical relations for the number of mature T4 bacteriophages, both inside and after lysis of an Escherichia coli cell, as a function of time after infection by a single phage were obtained, with the following five parameters: delay time until the first T4 is completed inside the bacterium (eclipse period, ν) and its standard deviation (ς), the rate at which the number of ripe T4 increases inside the bacterium during the rise period (α), and the time when the bacterium bursts (μ) and its standard deviation (β). Burst size [B = α(μ − ν)], the number of phages released from an infected bacterium, is thus a dependent parameter. A least-squares program was used to derive the values of the parameters for a variety of experimental results obtained with wild-type T4 inE. coli B/r under different growth conditions and manipulations (H. Hadas, M. Einav, I. Fishov, and A. Zaritsky, Microbiology 143:179–185, 1997). A “destruction parameter” (ζ) was added to take care of the adverse effect of chloroform on phage survival. The overall agreement between the model and the experiment is quite good. The dependence of the derived parameters on growth conditions can be used to predict phage development under other experimental manipulations.

Engineering Geological Condition Analysis of some Beijing Engineering

2012 ◽  
Vol 446-449 ◽  
pp. 1989-1992
Author(s):  
Yun Long Shangguan ◽  
Qing Wang ◽  
Cen Cen Niu ◽  
Ke Wang ◽  
Yan Ge Zhang
Keyword(s):  
High Speed ◽  
Geological Condition ◽  
Engineering Geological Condition ◽  
Geological Environment ◽  
Rock Blasting ◽  
Tunnel Excavation ◽  
High Speed Railway ◽  
Geological Conditions ◽  
Tunnel Design ◽  
Railway Engineering

With the high speed railway construction in our country, the launch of the railway engineering will inevitably lead to all kinds of engineering geological problems, resulting in the construction and operation of landslides, sudden gushing mud, rock blasting and other diseases. So with geological environment and engineering geological conditions of the station tunnel excavation , analysis and evaluate the influence of the engineering geological conditions of the tunnel, put forward the measures and suggestions for the engineering, and provide the basis for tunnel design and construction .

Preparation of Barium Titanate/Strontium Titanate Multilayered Nanoparticles

2011 ◽  
Vol 485 ◽  
pp. 305-308 ◽  
Author(s):  
Takayuki Goto ◽  
Kouichi Nakashima ◽  
Ichiro Fujii ◽  
Yoshihiro Kuroiwa ◽  
Yoji Makita ◽  
...  
Keyword(s):  
Barium Titanate ◽  
Epitaxial Growth ◽  
Strontium Titanate ◽  
Particle Growth ◽  
Growth Conditions

Nucleation and particle growth conditions of barium titanate (BaTiO3, BT) were investigated for preparation of the BT/strontium titanate (SrTiO3, ST) multilayered nanoparticles. The conditions with and without BT nucleation were clarified. Epitaxial growth of the BT layer on the ST substrate particles was studied using both conditions. The formation of the BT layer on the ST substrate particles was confirmed using the condition with BT nucleation.

scholarly journals Neotectonics and geodynamics of the Streltsovsky ore region according to the analysis of digital elevation models

2021 ◽  
Vol 946 (1) ◽  
pp. 012007
Author(s):  
I Yu Rasskazov ◽  
V I Usikov ◽  
Yu V Fedotova
Keyword(s):  
Underground Mining ◽  
Digital Elevation Models ◽  
Mineral Deposits ◽  
Eastern Region ◽  
Potential Hazard ◽  
Preliminary Assessment ◽  
Digital Elevation ◽  
Geological Conditions ◽  
Far Eastern ◽  
Drift Direction

Abstract In the case of underground mining of mineral deposits under difficult mining and geological conditions and at great depths, one of the most urgent problems is the prevention of dangerous geodynamic events. The use of digital elevation models significantly expands the possibilities of preliminary assessment of the potential hazard of their manifestation. This article discusses the results of an assessment of the neotectonics and geodynamics of the Streltsovsky ore region carried out using digital elevation models. The interpretation of the obtained data is based on the concept of lateral tectonic flows adapted for the Far Eastern region of Russia. Digital elevation models based on the GTOPO30 made it possible to identify and evaluate the drift direction of three tectonic flows in the region. The direction determined by the relief coincides satisfactorily with the GPS direction.

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