scholarly journals Interaction of Natural and Technical Systems in the Subsoil Development Areas

Author(s):  
В.И. Голик ◽  
Х.Х. Кожиев ◽  
О.Г. Бурдзиева ◽  
С.А. Масленников

Деятельность горнодобывающей отрасли осуществляется с высокой степенью риска. Проблема управления состоянием массива особо актуальна в условиях горного региона с неработающими выработками, воронками провалов и отвалами пород и хвостов обогащения на террасных участках и в долинах рек. Она особо актуальна в условиях региона Северная Осетия с неработающими выработками, воронками провалов и отвалами пород и хвостов обогащения на террасных участках и в долинах рек. Увеличение глубины горных работ и объемов выемки сырья в сейсмически активных районах усиливают статическое и динамическое воздействие на геомеханические системы. Одним из способов исследования динамики напряжений в массиве являются измерения с помощью тензометрических датчиков. На одном из месторождений была оборудована замерная тензометрическая станция. Полученные эпюры напряжений вокруг выработки служили основанием для оценки поведения массива. Установлено, что изменение состояния крепи в зависимости от фазы развития очистных работ подчиняется закономерности. Пока рудное тело в пределах блока ведет себя как защемленная в висячем и лежачем боках балка, напряжения распределяются равномерно. После отрезки рудного тела со стороны висячего бока нагрузка на верхний элемент крепи со стороны очистных работ возрастает. Одним из направлений совершенствования технологий является использование феномена заклинивания дискретных пород, что нередко позволяет обеспечить возможность отработки месторождений с получением экологоэкономического эффекта при обеспечении безопасности горных работ. Эффективность использования породных конструкций складывается из экономии труда и материалов на управление состоянием скальных массивов при подземных работах. Оптимизация влияния напряжений в зоне взаимодействия очистных и подготовительных выработок уменьшает разубоживание руд породами и снижает опасность травмирования работающих отлаивающимися породами. При подземной разработке скальных сложноструктурных металлических месторождений в зоне взаимодействия горных выработок величина и знак напряжений во времени и пространстве может быть прогнозирована с достаточной для оперативного управления детализацией. Учет геомеханических факторов при отработке таких участков позволяет корректировать параметры разработки с получением экономического эффекта от повышения качества добываемых руд и уменьшения опасности для работающих. Mining activities are carried out with a high degree of risk. The problem of managing the state of the massif is especially relevant in the conditions of a mountainous region with idle workings, funnel dips and dumps of rocks and tailings in terraced areas and in river valleys. It is especially relevant in the conditions of the North Ossetia region with idle workings, funnel dips and dumps of rocks and tailings in terraced areas and in river valleys. An increase in the depth of mining and volumes of raw material excavation in seismically active areas reinforce the static and dynamic effects on geomechanical systems. One of the methods for studying the dynamics of stresses in an array is measurements using strain gauge sensors. At one of the fields, a metering strain gauge station was equipped. The obtained stress diagrams around the working served as the basis for assessing the behavior of the array. It was established that the change in the state of the lining, depending on the phase of development of the treatment works, is subject to regularities. While the ore body within the block behaves like a beam pinched in the hanging and lying sides, the stresses are distributed evenly. After segments of the ore body from the side of the hanging side, the load on the upper support element from the side of the treatment works increases. One of the areas of technology improvement is the use of the phenomenon of jamming of discrete rocks, which often allows you to provide the opportunity to develop deposits with environmental and economic effects while ensuring the safety of mining. The efficiency of using rock structures consists of saving labor and materials on managing the state of rock masses during underground work. Optimization of the effect of stresses in the zone of interaction between treatment and preparatory workings reduces ore dilution by rocks and reduces the risk of injury to workers using exfoliated rocks. In underground mining of rocky complex structural metal deposits in the interaction zone of mine workings, the magnitude and sign of stresses in time and space can be predicted with sufficient detail for operational control. Consideration of geomechanical factors when mining such sites allows you to adjust the development parameters to obtain the economic effect of improving the quality of ore mined and reducing the risk to workers.

2021 ◽  
pp. 69-86
Author(s):  
Alla KHOMUTENKO

Introduction. The results achieved in managing state finances can be expressed through organizational, social and economic effects. They are dialectically related and, to a large extent, determine the degree of satisfaction of public interests that change over time. Financial indicators obtained in the budget sphere and in the state sector of the economy, characterize the economic effect of managing state finances. Economic effect, as a rule, confirms the feasibility of a functioning managerial apparatus and the effectiveness of its decisions in all spheres of society. The purpose of the article is to evaluate the economic effect of managing state finances of Ukraine, based on the author’s methodological approach, and substantiate the directions for its increase. Results. The indicators of the economic effect of state finance management are defined in the article. The analysis of individual indicators of fiscal, debt, investment and innovation stability in the state, as well as the financial stability of subjects of the state sector of the economy for 2008–2018. The tendencies of performance indicators of the plan of the State Budget of Ukraine, the reliability of the profitable part of Pension Fund of Ukraine, revenues from privatization, external state debt, efficiency and level of mastering of budget investments are established. The number and structure of the state sector, its financial contribution to the national economy are investigated. The necessity of carrying out a number of priority measures that will positively affect the indicators of the economic effect of managing state finances of Ukraine is substantiated. Conclusions. According to the results of the assessment of the economic effect of the efficiency of state finance management it is necessary to apply measures aimed at ensuring budgetary, debt, investment and innovation stability and financial stability of state sector entities. For example, it is necessary to improving the management of state-owned enterprises, in particular: 1) to change methodological approaches to assessing the effectiveness of state sector management; 2) to establish the relationship between the budget funding of the state sector of the economy and the results of its work; 3) to use budget lending as a tool for managing the initial financial flows of the state budget; 4) to increase the responsibility of heads of state enterprises for the results achieved by them. It is proposed to improve the management of budget investments due to: 1) the development of the institution of public-private partnership in certain areas of the economy such as infrastructure, science, etc.; 2) intensification of the use of innovation potential through the creation of innovation clusters, business incubators, etc.; 3) improving the quality of evaluation of the investment project, which will positively affect the effectiveness of its implementation; 4) reorientation of the directions of movement of funds from investments in means of production to investments in human resources, which has a long-term perspective, but with higher profitability; 5) securing for the state intellectual property rights for the development of state research institutes (patents, certificates, etc.), which will provide additional revenue from franchises and trademarks.


Antiquity ◽  
1976 ◽  
Vol 50 (200) ◽  
pp. 216-222
Author(s):  
Beatrice De Cardi

Ras a1 Khaimah is the most northerly of the seven states comprising the United Arab Emirates and its Ruler, H. H. Sheikh Saqr bin Mohammad al-Qasimi, is keenly interested in the history of the state and its people. Survey carried out there jointly with Dr D. B. Doe in 1968 had focused attention on the site of JuIfar which lies just north of the present town of Ras a1 Khaimah (de Cardi, 1971, 230-2). Julfar was in existence in Abbasid times and its importance as an entrep6t during the sixteenth and seventeenth centuries-the Portuguese Period-is reflected by the quantity and variety of imported wares to be found among the ruins of the city. Most of the sites discovered during the survey dated from that period but a group of cairns near Ghalilah and some long gabled graves in the Shimal area to the north-east of the date-groves behind Ras a1 Khaimah (map, FIG. I) clearly represented a more distant past.


2020 ◽  
Vol 45 (2) ◽  
pp. 340-348
Author(s):  
James Lucas da Costa-Lima ◽  
Earl Celestino de Oliveira Chagas

Abstract—A synopsis of Dicliptera (Acanthaceae) for Brazil is presented. Six species are recognized: Dicliptera ciliaris, D. sexangularis, and D. squarrosa, widely distributed in South America; D. purpurascens, which ranges from the North Region of Brazil (in the state of Acre) to eastern Bolivia; D. gracilirama, a new species from the Atlantic Forest of northeastern Brazil; and D. granchaquenha, a new species recorded in dry and semideciduous forests in Bolivia and western Brazil, in the state of Mato Grosso do Sul. Furthermore, we propose new synonyms and designate lectotypes for eleven names. An identification key to the six accepted Dicliptera species in Brazil is provided.


Author(s):  
Ruzanna V. Miroshnichenko ◽  
◽  
Anna Yu. Lukyanova ◽  
Svetlana A. Fedorova ◽  
Svetlana V. Nedvizhaj ◽  
...  

2002 ◽  
pp. 22-31 ◽  
Author(s):  
T. V. Maltseva ◽  
N. I. Makunina

The North-Eastern Altai is an ultra-humid area with climax vegetation represented by tall-herb fir (Abies sibirica) dark-coniferous forest. Its meadows belong to the class Molinio-Arrhenatheretea. The typical asso­ciation Aegopodio podagrariae—Dactyletum glomeratae originates in the watershed clearings after climax forests whereas ass. Hyperici perforati—Agrostietum giganteaereplaces the previous one under mowing and grazing. The Molinietalia wet meadows are widespread in the river valleys. The meadows of ass. Cirsio heterophylli—Calama­grostietum langsdorffii occur on wet soils in small depressions and along floodplain mire margins, and ass. Ca­rici ovalis—Deschampsietum cespitosae comprises typical floodplain hay-meadows on moist, nutrient-rich soils.


2007 ◽  
Vol 66 (4) ◽  
pp. 303-321
Author(s):  
Lode Wils

In het tweede deel van zijn bijdrage 1830: van de Belgische protonatie naar de natiestaat, over de gebeurtenissen van 1830-1831 als slotfase van een passage van de Belgische protonatie doorheen de grote politiek-maatschappelijke en culturele mutaties na de Franse Revolutie, ontwikkelt Lode Wils de stelling dat de periode 1829-1830 de "terminale crisis" vormde van het Koninkrijk der Verenigde Nederlanden. Terwijl koning Willem I definitief had laten verstaan dat hij de ministeriële verantwoordelijkheid definitief afwees en elke kritiek op het regime beschouwde als kritiek op de dynastie, groeide in het Zuiden de synergie in het verzet tussen klerikalen, liberalen en radicale anti-autoritaire groepen. In de vervreemding tussen het Noorden en het Zuiden en de uiteindelijke revolutionaire nationaal-liberale oppositie vanuit het Zuiden, speelde de taalproblematiek een minder belangrijke rol dan het klerikale element en de liberale aversie tegen het vorstelijk absolutisme van Willem I en de aangevoelde uitsluiting van de Belgen uit het openbaar ambt en vooral uit de leiding van de staat.________1830: from the Belgian pre-nation to the nation stateIn the second part of his contribution 1830: from the Belgian pre-nation to the nation state, dealing with the events from 1830-1831 as the concluding phase of a transition of the Belgian pre-nation through the major socio-political and cultural mutations after the French Revolution, Lode Wils develops the thesis that the period of 1829-1830 constituted the "terminal crisis" of the Kingdom of the United Netherlands. Whilst King William I had clearly given to understand that he definitively rejected ministerial responsibility and that he considered any criticism of the regime as a criticism of the dynasty, the synergy of resistance increased between the clericalists, liberals and radical anti-authoritarian groups in the South. In the alienation between the North and the South and the ultimate revolutionary national-liberal opposition from the South the language issue played a less important role than the clericalist element and the liberal aversion against the royal absolutism of William I and the sense of exclusion of the Belgians from public office and particularly from the government of the state.


2020 ◽  
Vol 93 (4) ◽  
pp. 88-100
Author(s):  
V. R. Darbasov ◽  
◽  
M. Р. Solomonov ◽  

The article assesses the state of the heat economy of the Northern region. The purpose of the article is to reveal the reasons for chronic backwardness of the region's industry from the average Russian indicators. To achieve the goal, solved the following problems: the features of heat economy in the North, analyzes the housing development, production and consumption of heat energy, as the sources of heat energy and heat networks, and also reforms in the heat economy of the region, based on which conclusions on assessment of the heat economy of the region. In recent years, there has been a twofold decrease in the rate of renewal of fixed assets of the heat economy against the norm, low rates of introduction of the resource-saving technologies in the heat economy, and in general, in the housing and communal services of the region. The level of marginal balance of supply and demand in the heat energy market is determined. The article is written to correct the decisions of the Federal and regional Executive authorities in terms of ensuring the reliability of heat economy of the Northern region.


2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Lindsey Haynes-Maslow ◽  
Stephanie B. Jilcott Pitts ◽  
Kathryn A. Boys ◽  
Jared T. McGuirt ◽  
Sheila Fleischhacker ◽  
...  

Abstract Background The North Carolina Healthy Food Small Retailer Program (NC HFSRP) was established through a policy passed by the state legislature to provide funding for small food retailers located in food deserts with the goal of increasing access to and sales of healthy foods and beverages among local residents. The purpose of this study was to qualitatively examine perceptions of the NC HFSRP among store customers. Methods Qualitative interviews were conducted with 29 customers from five NC HFSRP stores in food deserts across eastern NC. Interview questions were related to shoppers’ food and beverage purchases at NC HFSRP stores, whether they had noticed any in-store efforts to promote healthier foods and beverages, their suggestions for promoting healthier foods and beverages, their familiarity with and support of the NC HFSRP, and how their shopping and consumption habits had changed since implementation of the NC HFSRP. A codebook was developed based on deductive (from the interview guide questions) and inductive (emerged from the data) codes and operational definitions. Verbatim transcripts were double-coded and a thematic analysis was conducted based on code frequency, and depth of participant responses for each code. Results Although very few participants were aware of the NC HFSRP legislation, they recognized changes within the store. Customers noted that the provision of healthier foods and beverages in the store had encouraged them to make healthier purchase and consumption choices. When a description of the NC HFSRP was provided to them, all participants were supportive of the state-funded program. Participants discussed program benefits including improving food access in low-income and/or rural areas and making healthy choices easier for youth and for those most at risk of diet-related chronic diseases. Conclusions Findings can inform future healthy corner store initiatives in terms of framing a rationale for funding or policies by focusing on increased food access among vulnerable populations.


2018 ◽  
Vol 60 ◽  
pp. 00029 ◽  
Author(s):  
Vladimir Golik ◽  
Yuriy Razorenov ◽  
Volodymyr Morkun ◽  
Nataliia Morkun

The article is aimed at improving development mining to prepare an ore body for stoping by access ramps to provide comfortable conditions and high technical and economic indices in underground mining. Efficient parameters of underground mining are chosen in the course of simulating data on the mining theory and practice considering ore losses and dilution on the basis of critical analysis of uranium mining enterprises’ activities. The research provides data on geological and engineering zoning of an ore deposit and physical-mechanical properties of ore bearing rocks. The advanced experience is systemized and there is provided system analysis of modern development mining schemes with access ramps (ring, spiral, one-way inclined, central inclined and across the strike). The research recommends schemes of development mining and substantiates their advantages. There are quantitative indices of physical simulation of development variants as to drawn ore quality according to criteria of soil location in ore draw points. The scientific novelty implies developing the criterion of optimality and ranking variants of development mining according to technical-economic and geomechanical indices considering some technological factors as well as the number of stopes operating simultaneously on the level. The study consists in increasing authenticity of development projects through applying complex schemes of access ramps according to the complex criterion of increasing mining depths, equipment application, ventilation and underground mine capacity.


Oryx ◽  
2014 ◽  
Vol 49 (1) ◽  
pp. 60-63 ◽  
Author(s):  
Guilherme Braga Ferreira ◽  
Marcelo Juliano Rabelo Oliveira ◽  
Rogério Cunha de Paula ◽  
Flávio Henrique Guimarães Rodrigues ◽  
Érica Daniele Cunha Carmo

AbstractThe bush dog Speothos venaticus, a rare Near Threatened South American canid that lives in packs, was thought to be extinct in Minas Gerais state, south-eastern Brazil, until recently. Here, we report four recent records of the species in Minas Gerais, the first in the state since the description of the species in 1842. All records are from the Cerrado ecosystem in the north and north-west of the state; two are from animals found dead, one from footprints and another from a camera trap. Three of the records were inside or close (< 10 km) to strict protected areas, in a region recognized as the Protected Areas Mosaic Sertão Veredas–Peruaçu, where we expect any new records of the bush dog to be found. We discuss the low probability of detecting the bush dog and the main regional threats to the species, and emphasize the need to protect large and interconnected natural areas and keep them free of domestic dogs to avoid the extinction of the bush dog in Minas Gerais.


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