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8th EAGE International Scientific and Practical Conference and Exhibition on Engineering and Mining Geophysics 2012
- Conference date: 23 Apr 2012 - 27 Apr 2012
- Location: Gelendzhik, Russia
- ISBN: 978-90-73834-99-6
- Published: 23 April 2012
41 - 54 of 54 results
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О возможностях применения F-X деконволюции для подавления некогерентных помех на сейсмических данных
Authors П.И. Блинова and С.А. ВакуленкоIn this paper we analyze capabilities of F-X deconvolution in reducing incoherent noise. Different types of seismic data, including synthetic data with linear and non-linear in t-x domain events and real seismic reflection data were processed using F-X deconvolution and results were compared. We came to conclusion that F-X deconvolution is efficient method for reducing of incoherent noise when the input data contains events close to linear. To achieve better filtering result on pre-stack reflection seismic gathers it is recommended that NMO correction is applied prior to FX filtering.
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Классификация аномалий сейсмоакустических волновых полей при совместной интерпретации наземных и шахтных исследований
Authors И.А. Санфиров, А.И. Бабкин, Г.Ю. Прийма and К.Б. ФатькинSafety Upper Kama potash deposit salt mines connects closely with stability of the water protective pillar above the potash thickness. Surface and mine seismic researches with using CDP observations are the main instruments for probable nature and technical origin hazards in water protective pillar limits predictions. Possibility of the most information receiving is in common using surface and mining seismic researches. Example of such kind complex interpretation is presenting.
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Сравнение эффективности применения метода MASW c традиционными методами сейсморазведки для целей инженерных изысканий
Authors А.А. Ясницкий, А.А. Колодий, В.Н. Шабарин and г. ТуапсеAlong with the traditionally used in seismic engineering survey methods (seismic profiling, CDP, seismotomography), the multichannel analysis of surface waves (MASW) method becomes all increasingly popular and already been successfully applied abroad. The main research tasks of this report are: testing techniques of field work by the MASW method; implementation of seismic profiling on the same profile; processing of the received materials, and their interpretation; analysis and comparison of the results.
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Компрессионно-вакуумный источник упругих колебаний для малоглубинной сейсморазведки
Authors А.А. Репин, В.Н. Белобородов and А.К. ТкачукThe authors give a brief review of the available elastic vibration sources for shallow seismic exploration, substantiate the need in the development of the compression vacuum percussion machines as an elastic vibration source and report the laboratory evidence on the new-designed prototype models.
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Возможности применения метода Резонансно-Акустического Профилирования (РАП) для изучения и прогнозирования развития процессов карстообразования
Authors И.В. Зуйков and В.В. БединовThe report briefly overviews the theory and possibilities of using the Resonance-Acoustic Profiling (RAP) method for engineering-geological surveys. The authors presents some examples of applying the method for mapping a karst zones and also for studying hydrogeology of survey sites. In the report examples of application of a method for studying both natural, and a technogenic karst are considered.
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Ложные границы на разрезах ОГТ
More LessThis report reflects the process of the formation transverse waves reflected in the horizontal direction from vertical contacts. Sometimes this waves form clear coherent lineups on the sections of CDP. It can put to the building of false dipping boundaries by interpretation.
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О достоверности наблюдаемых отражающих границ на суммарных разрезах инженерного МОВ ОГТ
Authors С.В. Буряк and С.А. ВакуленкоComplex wavefield frequently observed on the near-surface prestack seismic gathers being combined with suboptimal application of seismic processing algorithms may lead to observation of prolonged coherent events on the resulting stacked sections, which can be easily interpreted as reflections, although have nothing to do with reflected waves. To avoid misinterpretation, it is crucially important to compare the resulting stack with pre-stack seismic gathers to make sure that each reflection on the stack has a corresponding hyperbola time-curve on the gather
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Исследование динамических свойств карбонатно-глинистых полускальных грунтов в диапазоне малых сдвиговых деформаций
Authors Е.А. Вознесенский and А.С. ГорбуноваResults from laboratory tests on marls are presented, which have been conducted in order to observe the behavior of marls at very small strains and determine its dynamic properties. Damping properties of marl were of particular interest, since published data on this subject is extremely limited and its theory needs further development. Rock shear modulus (G, Pa) and damping ratio (D, %) were studied by means of resonant-column method. The study was carried out on intact solid cylindrical specimens and test results demonstrated shear modulus degradation and damping ratio growth as a function of shear strain. Aside from resonant-column testing, laboratory measurements of damping ratio α(f) were carried out using geophysical ultrasonic test methods. It was found, that damping indexes, obtained from two abovementioned methods, did not correlate with each other. It might have resulted from differences in equipment operational frequencies, as damping is a frequency-dependent parameter.
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Разведочные возможности нового образца многоканального сейсмоакустического комплекса с пневматическим излучателем малого объема
Authors М.Ш. Шарипов, Д.Ф. Исмагилов, А.А. Терехов and А.В. ФиличевEstimation of Real Possibilities of New Russian Multi-Channel 2D CDP HR Seismic & Acoustic Complex in the Examples Studies Sites in the Caspian Sea
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Применения метода Резонансно-Акустического Профилирования (РАП) на стадии инженерно-геологических изысканий при строительстве и реконструкции объектов на примере работ в Брянской и Калужской областях
Authors И.В. Зуйков and В.В. БединовThe report briefly overviews the theory and Applications of a Resonanse-Acoustic Profiling (RAP) method of at the stage of engineering-geological surveys at building and reconstruction of objects on an example of works in Bryansk and Kaluga areas. Problems of forecasting of processes of a karst formation and tectonic zones are considered at construction surveys, and uses of this data at designing of buildings and structures.
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Сейсмическая разжижаемость грунтов: инженерная оценка и классифицирование
Authors Е.А. Вознесенский and Е.С. КушнареваPaper presents the state-of-the-art in geotechnical approach to the problem of soil seismic liquefaction evaluation in the practice of site investigations. Generally used methods, including cone penetration test (CPT), standard penetration test (SPT), dynamic sounding and seismic sounding as well as laboratory dynamic tests (cyclic triaxial, cyclic simple shear, cyclic torsional shear and others), are described. Basing on the published data and on the wide practical experience of the authors a new classification for identification of potentially liquefiable soils is developed.
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Инженерные изыскания в условиях больших глубин
Authors С.М. Клещин, К.С. Попова and А.П. ДемоновThe main methods for carrying out of detailed engineering-geophysical and hydrographical surveys in deep depths, their advantages and disadvantages are considered in this document. Also it contains results which were obtained by using Autonomous Underwater Vehicle (AUV). The work procedure via Remote Operated Vehicle (ROV) does not considering due to very low speed of research (1-2 knots).
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Сейсмоакустические методы при инженерных изысканиях под установку буровых и добывающих платформ на акваториях
Authors Е.А. Самсонов and Н.Б. СамсоноваThis paper presents comparison characteristic of two perspective system of engineering seismic CDP: High resolution seismic (HRS) and Ultra High resolution seismic (UHRS) and sub-bottom profiling with generated a linear pulse (swip) in engineering survey in water area.
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Опыт изучения сейсмических свойств грунтов оснований после их улучшения методами инженерной подготовки (устройства свайного фундамента)
Authors Б.А. Трифонов, И.Г. Миндель, В.В. Севостьянов, Н.А. Рагозин and В.В. НесыновResults of experimental researches for the purpose of an estimation of degree of improvement of a seismic building conditions for the account of device of a pile foundation of the base are presented.
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