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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
21 - 40 of 54 results
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Электропрофилирование методом сопротивлений при изучении инженерно-гидрогеологических условий формирования растительного покрова на рекультивируемом отвале Лебединского горно-обогатительного комбината
Authors Ю.С. Погорелов and С.В. СергеевThe technique and results of geophysical dipolar electroprofiling on various sites of a sailing of rocks on Lebedinsky ore dressing industrial complex are stated. It is established that the pseudo-cut of seeming electric resistance characterizes heterogeneity of the top part of a bulk file on degree of dispersion of a firm phase and water penetration of a ground in a zone of aeration and allows to allocate in it sites with various conditions of development of a vegetative cover, a zone of a deep reservoir. It is shown that the method of resistance can be effectively used for monitoring of a blanket of sailings by working out of mineral deposits.
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Использование метода Резонансно-Акустического Профилирования (РАП) при поисках золоторудных и алмазных месторождений на примере месторождений Западной Африки, Южной Америки и Финляндии
Authors И.В. Зуйков and В.В. БединовDifference in apparent resistivity values determined in galvanic and inductive electrical and EM methods depends on macroanisotropy of layered cross-section and decreased penetration depth of galvanic methods without changing penetration depth of inductive methods. Joint influence of these two factors in case of high contrast of layers' resistivities results in difference in several tens of apparent resistivity values.
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Технология использования программного комплекса АСАД для интерпретации георадарных данных на площадных объектах строительства
By Н.И. УразаевIn modern practice, the interpretation of seismic data using complex programs with visualization of time and depth of cuts in three dimensions. For a sufficiently dense network of observations using GPR at construction sites of area without such a tool of interpretation is very difficult to do. Typically, the customer engineering geophysical studies has specialized seismic program complexes for independent review and analysis of the materials. The standard material transfer to the customer in engineering geophysics - the format of Acad, all organizations associated with the construction must have AutoCAD software produced by Autodesk. The report provides an example of 3D technology, and interpretation of GPR data of area in AutoCAD 2008. In the case of data in the format of Acad specialists in other areas of land surveyors, or designers can independently process the information about the object under study, for example, determine the location of underground utilities, etc.
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Различие результатов гальванических и индуктивных методов на примере ДИП и БИЭП
Authors В.А. Шевнин, А.А. Бобачев, И.Н. Модин and Т.В. ЯловNew field technology for studying anisotropy of hydraulic properties in fractured rocks on azimuthal SP measurements, developed by D.N. Wishart and L. Slater, is considered and used to study water filtration in loose grain sediments of river floodplain. Azimuthal SP diagrams allow finding direction of groundwater filtration and can add to traditional azimuthal resistivity survey
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Метод стоячих волн в инженерной сейсмологии
Authors А.Ф. Еманов, В.С. Селезнёв, А.А. Бах and А. КрасниковA standing wave field, different from other waves by coherence property in time, is always formed in closed spaces and stratified media. Extraction of standing waves per se from recorded wave fields on filtering basis by coherence in time and conversion of nonsimultaneous observations in simultaneous standing waves records in studied objects forms the basis of standing wave method. The method performs well in study of self-induced vibrations of buildings and constructions. The maps of amplitudes and phases of standing waves in set of natural frequencies, derived with given detail and accuracy, characterize an object in full and allow to determine not only its seismic stability, but realize a diagnostics of physical state at a level of constructional elements. In seismic microzoning the standing wave method performs well as direct researchmethod of resonant properties of section. Realizing a selection of standing waves in property of coherence in time, a standing wave field is separated in upper part of section and segregated on layer resonance. As a result we have a set of section natural frequencies and maps of vibration amplification on each of frequencies. On the basis of maps of standing wave phases a resonance type is simply set. The resonances, formed as multiples between horizontal boundaries, have the same close phase on area, whereas in lenses and block mediums horizontal resonances may appear characterized by banded change of areal phase. Combination of high-accuracy study of resonant properties of areas and buildings provides a new echelon of accuracy in seismic risk assessment.
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Геофизические исследования городища Джанкент
Authors С.А. Ерохин, И.Н. Модин and А.М. ПавловаThe article daels with the results of geophysical investigations of Djankent fortress, which was the capital of Oguz Turks, the historical Turkic tribal confederation. Very small part of the site (its size iz about 250×450 m) were explored by the means of archaeological excavations, so the aim of geophysical researches was investigation of the origin and structure of the base of a settlement (the average nowadays height is about 6 m) and recostruction of the ancient planning of some districs. The task was successfully completed by the means of electrial resistivity imaging and magnetic survey. The electrical tomography showed, that the base of fortress was made artificially with complex technology. The results of magnetic survey enabled to reveal the planning of a district, consisting of parts (40×40 m) with four yards in each part.
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Первые результаты применения георадара «Питон-3» в составе комплексов геофизических исследований в различных геологических условиях
Authors К.А. Костенко, Р.В. Пейсахов and А.В. ХилькоThe report shows the results of a profiling with the new GPR "Python 3" in the various complexes of geophysical research. In particular, discusses the results of GPR profiling under conditions of permafrost of Yamal, represented by sands and loams varying degrees of salinity. We compare the results of GPR with the results of seismic with CDP method. The report also covers the results of GPR profiling upon the ice on the aquatorium of the Novomoskovsk water storage basin. The water depth is up to eight meters, the power of the bottom muds of up to five feet. Soils represented by fluvioglacial deposits. We also consider an example of GPR research in the area of Novorossiysk in comparison with the results of seismic studies by multiple overlaps. Soils represented by marly strata, weathered from the surface to loam. In all cases the studies, with the use of low-frequency antennas (25 - 38 MHz), confidently reached the depth of the study 15 - 30 m, which is a revolutionary step in using GPR for engineering surveys, requiring, usually, the depth of the study about 15 - 20 m.
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Георадиолокационный способ определения электрофизических свойств грунтов
Authors А.В. Морозов, В.Л. Шаповалов and В.А. ЯвнаAs a result of experimental and theoretical studies the techniques are developed allowing to determine the permittivity by the visible borders of groundwater layers and intensity of the signals reflected from them as well as to estimate the conductivity of soil by the attenuation of the signal
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Основные преимущества телеметрических регистрирующих сейсмических систем при инженерно-геофизических исследованиях
Authors А.С. Федотов and С.А. ФедотовThe main advantages of telemetry seismic recording systems in engineering and geophysical studies
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Определение эффективности георадиолокационного метода по результатам измерения диэлектрических свойств грунта
Authors К.Ю. Кислица, З.Б. Хакиев, М.С. Рассудов and В.А. ЯвнаThe work is dedicated to the development of the method for determining the attenuation coefficient of electromagnetic radiation in a medium based on the results of direct measurements of the soil dielectric permittivity and conductivity in the range of frequencies used in the practice of GPR. The method is based on a comparison of the resonance frequency of a soil and reference samples. Advantage of this method is to maintain the soil structure during the measurement
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Определение сезонных изменений электрофизических свойств грунтов методом георадиолокации
Authors А.А. Кругликов, А.В. Морозов, В.А. Востров and В.А. ЯвнаThis work is dedicated to the development of a method based on GPR for assessing the moisture of railroad structural layers wich is varying by the occasional rainfall patterns and seasonal changes in weather conditions. As a result of theoretical and experimental research the technique of inspection of subgrade of railway track.
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Обработка георадиолокационных данных в режиме реального времени
Authors В.А. Явна, В.Л. Шаповалов, М.В. Окост, Г.И. Лазоренко and В.А. ВостровThe work describes a hardware-software complex (HSC) for the speed diagnosis of the condition of railway track. Designed HSC allows to handle the information received simultaneously from multiple channels of GPR system. As a result of the data processing the profiles and structural components of the layers are generated as well as their characteristics: the slope of the ground layers, moisture, layering and deformation of subgrade.
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Георадиолокационные исследования ледяных образований в пещерах
Authors Ю.И. Степанов, А.А. Тайницкий and А.В. КичигинIn 2010, we are carried out GPR studies in a remote cave Medeo. The cave is located in the territory of Srednevisherski area of West Ural folded zone carbone-bearing karst. The aim of the study was to examine the power and homogeneity of perennial ice formations. According to the results of the first defined power of multi-year ice and built a three-dimensional model of sediments.
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Георадарные обследования оползневых деформаций грунтов на откосах земляного полотна
Authors А.М. Кулижников and Р.А. ЕреминThis paper describes the experience of landslide road sections surveying by Ground Penetrating Radar (GPR) method. Theoretical justification of landslide soil deformations prediction based on the interpretation of amplitude-frequency characteristics of reflected signal of GPR in three specific zones is given. GPR surveying methodology, as well as received field, processed and interpreted radaragrams are reviewed. The article confirms working hypothesis based on the results of a subgrade slopes survey on the M-5 «Ural» Highway section.
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Опыт обследования высоких опор мостовых сооружений методом георадиолокации
Authors А.В. Старовойтов, М.Л. Владов, М.С. Судакова and А.М. РомановаThe results of GPR investigation of railway bridge bearings are shown. The internal structure of the bearings was determined and weak areas were identified. The results were compared with data from acoustic tomography; for the certification of the results drilling was used.
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Исследования на александровском полигоне методом георадиолокации с использованием моностатического георадара «ПИТОН»
Authors А.М. Пятилова, М.Л. Владов, А.А. Бобачев, И.Н. Модин and А.М. ТурчковGeoradar “Phyton” is a new equipment for GPR surveys. Using this radar in December 2011 were made researches on Alexandrovka’s training ground on the profile 1, where lots of geophysical methods data exists(electrical prospecting in different modifications, seismic methods, borehole geophysical studies), boreholes have been drilled. This information makes possible exact data binding and make its qualitative evaluation. In present report brief descriptions of “Phyton” and other used equipment are given, as well as methods of different investigations on Alexandrovka area. Techniques of data processing using RadExPro Advanced 2011.4, RES2inf, X2IPI software are given. The task of results interpretation is not only the maximum value of data mining in each method, but also comparison of different types of data – boring, seismic investigations, electrical prospecting.
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Изучение карстово-опасных территорий московского региона методом МОВ МОГТ
Authors Б.А. Гранит and А.Г. ГинодманThe study of karst-prone areas of the Moscow region by the CDP
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Возможности обработки данных многоканальных сейсморазведочных данных в инженерной сейсморазведке
Authors Н.А. Рагозин and А. С. ФедотовThe possibilities of processing with use of various types of seismic waves are given by the example of the seismic data received by means of multichannel telemetering system TELSS
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Сейсморазведочное обоснование инженерно-геологических исследований на территориях техногенных катастроф
Mine-technical collapses in many cases are stimulating the different near surface negative geological processes. They are karst activity, suffusion, destruction of the hydrodynamic balance. Most dangerous result of their activity is earth surface fast subsiding. Main target of the geological, geophysical and other services is the possibility such events prediction. Shallow seismic reflection is one of the most important sources of the information for this problem decision. Theoretical and methodical ensuring of the seismic using for this target is presenting with results of the practical checking for flooded salt mine territory
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Особенности деформируемости глинистых грунтов в диапазоне малых деформаций
Authors Е.А. Вознесенский, М.С. Никитин and А.Н. УсовSome regularities of clay soils deformation behavior in small-strain range (10-5 - 10-4) are presented based of consolidated drained triaxial tests. Both usual and local sensors were used for measurements of strains and pore pressure. The presented data demonstrate sufficient differencies between total and local strains at the same stage of loading as well as the influence of strain rate
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