 |
advertisement |
|
|
|
|
|
|
|
Ecological Systems and Devices Annotation << Back
|
THE PHYSICAL CHARACTERISTICS OF THE DEVELOPMENT PROCESSES OF GAS POLLUTION OF THE ATMOSPHERE IN UNDERGROUND MINING |
E.D. Yakusheva
In industrial emissions of gas impurities, a number of complex chemical and photochemical reactions occur, resulting in the emergence of new toxic substances that were not in the initial emissions. Among the inorganic substances of anthropogenic origin especially emissions of nitrogen oxides and sulfur oxides and carbon dioxide, etc. In its Genesis gas revenues in the atmosphere can be divided into two large groups: eye-catching from rocks during mining and formed in the underground space during the execution of technological processes. Each of these groups, in turn, is divided by sources and forms of gases entering the atmosphere. Gases of endogenous deposits are formed at the expense of magmatic gases, gases of interaction of the melted magma and lateral breeds, gases of sedimentary breeds, radiochemical gases and gases of chemical and biological weathering of breeds. Rocks of exogenous deposits are characterized by high open porosity, gas permeability, and some of them (for example, coals) and high sorption activity, i.e. they have high reservoir properties. Conventional continuous and sudden discrete methane emissions from coal and gas emissions, in addition to the negative impacts on coal production, also contribute to changes in the composition and properties of the main components of the biosphere (atmosphere, hydrosphere and lithosphere) and to the deterioration of the conditions of natural exchange in the biosphere, which causes warming of the earth’s climate. The assessment of the role of methane released from coal mining and sudden releases of coal and methane in the climate change of the Earth plays an important role, because, fi rstly, the release of methane from coal seams can be controlled to some extent, and secondly, methane screens infro-red radiation is much stronger than the main greenhouse gas-carbon dioxide. Gas pollution of the atmosphere belonging to the second genetic group (Fig.), formed in the conduct of mining operations at the level of applied Geotechnology. The basis of any geotechnologies of solid minerals mining is the destruction of rock mass using mechanical energy or explosion energy. The inevitable result of the application of this technology in the development of mineral resources is the pollution of the atmosphere with gaseous detonation products, the composition and amount of which is determined by the type of BB, the design of the charge, the explosion conditions and the properties of the destroyed array. Another sufficiently intense source of atmospheric gas pollution is loading, delivery and transportation of fragmented rock mass from the place of occurrence to the surface complex, as well as drilling operations performed with the use of diesel equipment. The analysis of these expressions shows that the overall effect on the atmosphere by the factor under consideration is related to the applied Geotechnology only through the performance indicator of the unit of equipment (QB and qn). other factors that determine the overall emissions from geotechnologies are virtually independent.
Keywords: underground mining; deposits; atmosphere; gases; rocks; technological processes; natural sources; man-made sources; intensity; geoecology.
DOI: 10.25791/esip.11.2018.255
Contacts: E-mail: yakusheva-ed@mail.ru
Pp. 47-55. |
|
|
|
Last news:
Выставки по автоматизации и электронике «ПТА-Урал 2018» и «Электроника-Урал 2018» состоятся в Екатеринбурге Открыта электронная регистрация на выставку Дефектоскопия / NDT St. Petersburg Открыта регистрация на 9-ю Международную научно-практическую конференцию «Строительство и ремонт скважин — 2018» ExpoElectronica и ElectronTechExpo 2018: рост площади экспозиции на 19% и новые формы контент-программы Тематика и состав экспозиции РЭП на выставке "ChipEXPO - 2018" |