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    Tytuł:
    Zastosowanie metody georadarowej do identyfikacji stref erozji dna rzecznego na przykładzie wybranego odcinka doliny Wisły w Warszawie
    Application of GPR method for identifying riverbed erosion zones on the example of selected section of the Vistula valley in Warsaw
    Autorzy:
    Mieszkowski, R.
    Wójcik, E.
    Żmudzin, D.
    Szwarc, A.
    Sosnowska, A.
    Popielski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/2075716.pdf
    Data publikacji:
    2017
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    metoda georadarowa
    GPR
    dolina Wisły
    erozja
    ground penetrating radar method
    Vistula riverbed
    erosion processes
    Opis:
    In the article the occurrence ofseveral natural thresholds in Vistula River valley was discussed. These forms are stabilizing river channel regime and impeding shipping at the same time. The example of application of ground penetrating radar (GPR) for detecting and identifying the erosion zones in the bottom of the river valley was presented. The investigations were carried out along the chosen section of Vistula River in the vicinity of Gdansk Bridge (Most Gdański) in Warsaw. The survey was conductedfrom a motorboat with the MALA GroundExplorer (GX) georadar system installed with 160 MHz screen antenna. The prospection down to 7.5 m below the water surface was obtained. The applied methodology allowed to obtain radar echograms indicating the following anomalies: from the river bottom, from cohesive soil (includingNeogene clays) andfrom thresholds (noticeably elevatedforms in the bottom). In identifying and interpreting georadar anomalies, archival boreholes data were used.
    Źródło:
    Przegląd Geologiczny; 2017, 65, 10/2; 785--789
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Rozpoznanie budowy geologicznej podłoża obiektu ARENA w Krakowie-Czyżynach metodami geofizycznymi pod kątem występowania gruntów organicznych
    Astudy of bedrock geological structure of the ARENA object in Kraków-Czyżyny using geophysical methods to detect the presence of organic soil
    Autorzy:
    Pasierb, B.
    Nawrocki, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/2075329.pdf
    Data publikacji:
    2015
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    tomografia elektryczna
    rezystywność
    ERT
    georadar
    GPR
    gleby organiczne
    electrical resistivity tomography
    Ground Penetrating Radar
    organic soil
    Opis:
    Geophysical research assists in clarifying the methodology of future building work. The geological structure in terms of lithological variation of Quaternary and older formations was identified in the area of the proposed garage near the ARENAobject in Krakow. In particular, the possibility of the presence of inserts of organic soils was determined. Ground Penetrating Radar (GPR) and Electrical Resistivity Tomography (ERT) were used for more complete and comprehensive recognition of the ground. As a result of the study of the subsurface, thin interbeds of weak bearing organic soils have been found just outside the outline of the planned building. It was found that the Quaternary formations which were identified by geophysical and geotechnical methods are an appropriate ground for direct foundation of the object.
    Źródło:
    Przegląd Geologiczny; 2015, 63, 5; 289--294
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Badania modelowe strefy aeracji z wykorzystaniem programu Unsat Suite i badań georadarowych
    Modelling research of the vadose zone using the UnSat Suite program and a ground-penetrating radar
    Autorzy:
    Gańko, M.
    Trzeciak, J.
    Zabłocki, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/2075623.pdf
    Data publikacji:
    2017
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    strefa aeracji
    Unsat Suite
    badania georadarowe
    czas perkolacji
    ładowanie
    vadose zone
    UnSat Suite
    ground-penetrating radar
    percolation time
    recharge
    Opis:
    The purpose of this paper was to analyze the effect of detailed recognition and correct mapping of the boundaries between layers of different grain sizes on the results of modelling tests of the vadose zone. The modelling was performed using UnSat Suite software that enables modelling of water permeability and migration ofpollutants through the vadose zone using various numerical programs, including VS2DT that was used in this case study. Directfield research, including drilling of boreholes and ground-penetrating radar investigation, has shown a significant variation in lithology of the vadose zone in a small test area located in Włocławek city. Various sand fractions have been found: from fine to coarse sand, with varying filtration parameters and moisture content. Ground-penetrating radar investigations have enabled a more accurate recognition and refinement ofgeologic structures, particularly in the context oflithological boundaries, including the space between boreholes. The results of the modelling tests conducted in the vadose zone enabled determination of the velocity, time and volume of infiltration water.
    Źródło:
    Przegląd Geologiczny; 2017, 65, 11/2; 1202--1205
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    ERT i GPR – geofizyczne metody badań podłoża wykorzystywane w budownictwie liniowym
    Geophysical methods ERT and GPR of subgrade identification in road and railway engineering
    Autorzy:
    Maślakowski, M.
    Józefiak, K.
    Brzeziński, K.
    Superczyńska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2075727.pdf
    Data publikacji:
    2017
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    obrazowanie elektrooporowe
    ERT
    mobilna metoda geofizyczna
    GPR
    geofizyczny test w terenie
    electrical resistivity tomography
    Ground Penetrating Radar
    geophysical field tests
    Opis:
    Correct determination of subgrade layers and properties is fundamental for later design and construction stages. Results obtained using traditional geotechnical tests are always of an overly specific nature - information is only provided in certain points in the field. Number of test points and the accuracy of results’ interpretation among them influence the design of an engineering structure foundation, which greatly impacts the cost of a project. Also, the lack of soil testing or insufficient investigation of soil conditions can be the reason for all kinds of legal claims from contractors which often exceed the whole investment budget by several or even several dozen percent. In order to prevent that situation new directives for geotechnical testing include additional geophysical methods such as electrical resistivity tomography (ERT) and ground penetrating radar (GPR). These non-invasive methods can give a spatial image and thus improve the accuracy of soil strata identification. However, these methods have also disadvantages and inaccuracies related to the measurement principles and interpretation of the results. This paper presents limitations and possible errors of geophysical methods ERT and GPR based on example tests carried out for road and railway engineering structures.
    Źródło:
    Przegląd Geologiczny; 2017, 65, 10/2; 765--771
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ocena wpływu wybranych parametrów profilowań georadarowych w badaniach podłoża gruntowego na potrzeby budownictwa na przykładzie zrębu Zakrzówka
    Evaluation of the influence of selected parameters of GPR profiling in the study of bedrock for construction needs on the example of the Zakrzówek horst
    Autorzy:
    Karczewski, J.
    Ortyl, Ł.
    Mazurkiewicz, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/2075729.pdf
    Data publikacji:
    2017
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    profilowanie georadarowe
    sztaplowanie
    częstotliwość próbkowania
    krok pomiarowy
    kras
    wapienie
    ground penetrating radar
    stacking
    sampling frequency
    distance between traces
    karst
    limestones
    Opis:
    The identification of bedrock for construction purposes in areas threatened by discontinuous deformations can be accomplished using various geophysical methods. The paper presents the results of studies conducted using the GPR method in the Zakrzówek horst area in Cracow as a site rich in karst structures (caves, cavities, sinkholes). A number of tests were carried out on the field using GPR equipment: ProEx System and RAMAC/GPR CU II of the Swedish company Mala Geoscience. During measurements 250 MHz shielded antennas were used. The following measurement parameters were changed during tests: sampling frequency, number ofstacks and distance between traces. The influence of the above parameters on the quality ofrecorded GPR images was analyzed.
    Źródło:
    Przegląd Geologiczny; 2017, 65, 10/2; 796--802
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Rozpoznanie złoża piaskowców budowlanych z wykorzystaniem geofizycznych badań elektrooporowych i georadarowych
    Recognition of building sandstone deposit with the use of geophysical resistivity sounding and georadar methods
    Autorzy:
    Klityński, W.
    Stelmach, K.
    Stefaniuk, M.
    Karczewski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2074262.pdf
    Data publikacji:
    2014
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    sondowania elektrooporowe
    VES
    elektrooporowość
    metoda inwersji Occama
    pomiary georadarowe
    GPR
    piaskowce
    Vertical Electrical Sounding
    resistivity
    Occam inversion
    ground penetrating radar
    sandstone complex
    Opis:
    The paper presents the application of Vertical Electrical Sounding (VES) and Ground Penetrating Radar (GPR) into recognition of the geometry and vertical differentiation of a deposit of color sandstones that are commonly used as elevation stones in building industry. The investigations covered sandstones of Lower Cretaceous age (Albian) that occur at the foothills of the Che³mo Mt. near Kolonia Grabowie (Radomsko district, £ódŸ province). The former quarry of Grabowie is situated in the forest area of the landscape park and this blocked further exploitation from the documented deposit. On a limited scale sandstone is still quarried form the southern edge of the old quarry. However, poor recognition of the deposit hampers the effective exploitation. The objective of the geological investigations was to examine a new part of the deposit including identification of the roof and the bottom of sandstone complex, the thickness of overlying rocks, location of faults and weathered zones, as well as recognition of the lithology down to a depth of 8 m below ground surface. Resistivity distribution in the study area was assessed with the use of VES. Much higher resistivity of sandstones as compared to surrounding rocks was advantageous. Owing to high resolution GPR, the deposit boundaries could be delineated and the stratification within the sandstone complex could be represented. The investigations resulted in construction of 2D models of the deposit and surrounding rocks and gave information on the lithology.
    Źródło:
    Przegląd Geologiczny; 2014, 62, 10/2; 621--628
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analiza porównawcza wyników badań geofizycznych i geologiczno inżynierskich na potrzeby ustalania modelu geologicznego – na przykładzie poligonu badawczego Kępa Włocławska
    Comparative analysis of the results of geophysical and geological- -engineering methods on the example of Włocławek River-islet investigative testing ground
    Autorzy:
    Gańko, M.
    Mieszkowski, R
    Gańko, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2075284.pdf
    Data publikacji:
    2015
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    georadar
    GPR
    pionowe sondowanie elektrooporowe
    VES
    tomografia elektrooporowa
    ERT
    refrakcja
    sejsmika
    sondowania statyczne
    CPT
    ground penetrating radar
    vertical electrical sounding
    electrical resistivity tomography
    refraction
    seismics
    cone penetration test
    Opis:
    The paper present the correlation of geophysical method with geological-engineering data. As an experimental testing ground, a terrain with simple soil conditions was selected, located on the W³oc³awek River-islet. This is a large alluvial area on the Vistula River, downstream of the W³oc³awek Dam. In the study, the following geophysical methods were applied: vertical electrical sounding (VES), refraction seismic, ground penetrating radar (GPR) and electrical resistivity tomography (ERT). The evaluation of geological-engineering conditions was executed by using the following methods: drilling, cone penetration test (CPT sounding), measurements of the underground water level and macroscopic and laboratory analyses of soils samples. The results obtained were described and presented in a graphic form.
    Źródło:
    Przegląd Geologiczny; 2015, 63, 2; 121--130
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zastosowanie metody georadarowej do określania położenia swobodnego zwierciadła wód podziemnych w trakcie próbnego pompowania
    On application of ground penetriation radar method in defining position of the free aquifer during of the test pumping
    Autorzy:
    Gańko, M.
    Mieszkowski, R.
    Gańko, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2075387.pdf
    Data publikacji:
    2015
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    wody podziemne
    piezometr
    lej depresji
    pompowanie
    sondowanie statyczne
    CPT
    metoda georadarowa
    GPR
    free aquifer
    piezometer
    depression cone
    pumping well with observation weels
    cone penetration test
    ground penetrating radar
    Opis:
    In this paper were verify the possibilities of use the ground penetrating radar method to defining the range of depression cone during pumping test the first free aquifer. On the experimental area there were: pumping well with observation weels, geotechnical weels and cone penetration tests. This made possible the credible interpretation of the results with GPR investigations. GPR measurements were executed before pumping and after stabilizing the depression. On the echograms there were clearly appeared the free aquifer before and during of the pumping. On the basis of geophisical investigations it was successful to interpret the position of free aquifer and the range of depression cone.
    Źródło:
    Przegląd Geologiczny; 2015, 63, 10/1; 721--726
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ocena możliwości zastosowania metody georadarowej i elektrooporowej do identyfikacji rozluźnionych stref gruntów niespoistych
    Evaluation of the applicability of GPR and resistivity methods for identifying loose zones in non-cohesive soils
    Autorzy:
    Mieszkowski, R.
    Zawrzykraj, P.
    Żmudzin, D.
    Wójcik, E.
    Popielski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/2075707.pdf
    Data publikacji:
    2017
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    metoda georadarowa
    GPR
    metoda elektrooporowa
    ERT
    sondowanie dynamiczne
    DPL
    zagęszczenie nasypu
    wskaźnik zagęszczenia
    ground penetrating radar method
    electrical resistivity tomography method
    dynamic sounding
    relative density
    degree of compaction
    Opis:
    The results of the possibility of geophysical methods application (such as geoelectrical ones, including ground penetrating radar and electrical resistivity tomography) to identify areas of loose sands were presented in the article. Registered anomalies obtained from geophysical survey have been verified by geological and engineering tests (drillings and dynamic probing). Measurements were carried out along the part of the lateral earth dam, consisting of man-made soils with a thickness of approximately 7 m and underlying alluvial medium grained sands. The results obtained from the geophysical survey and direct assessment of density by means of dynamic probing allowed to demonstrate the relationship between a specific type of geophysical anomalies and the density of non-cohesive man-made soils.
    Źródło:
    Przegląd Geologiczny; 2017, 65, 10/2; 779--784
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Geometryzacja form zjawisk krasowych na podstawie badań metodą georadarową
    Geometrization of karst phenomena based on GPR research
    Autorzy:
    Ortyl, Łukasz
    Powiązania:
    https://bibliotekanauki.pl/articles/2075956.pdf
    Data publikacji:
    2019
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    metoda georadarowa
    kras
    wapienie
    jaskinia
    pustki
    modelowanie danych
    naziemne skanowanie laserowe
    ground penetrating radar
    GPR
    karst
    limestones
    cave
    voids
    finite differential time domain
    FDTD
    terrestrial laser scanning
    TLS
    Opis:
    Recognition of subsoil in areas threatened with discontinuous deformation associated with the existence of natural and mining voids can be implemented by various geophysical methods. The purpose of such research, apart from confirming the existence of voids, is to determine their spatial extent. This is not a simple issue, regardless of the geophysical method used. This paper discusses the possibilities of geometrization of karst phenomenon localization using the ground penetrating radar (GPR) method by the example of a karst cave as a natural void. The area of data acquisition is located on limestone formations with numerous karstforms. The study object is the main hall of the karst cave with a height of up to 3 m, located at a depth of 3 to 7 m below the surface. Such location and shape of the subsurface structure made it possible for the author to perform a wide range of research. Their original aspects are presented in this paper. The shape of the hall was obtained using terrestrial laser scanning (TLS). The GPR data were obtained employing the 250 MHz shielded antenna that was directly positioned using a robotized total station with the option of automatic target tracking. Thus, the GPR and geodetic data were immediately achieved in a uniform coordinate system. The accuracy of the data obtained in this way is discussed in this paper. The author’s original algorithm for processing of GPR data into a point cloud is presented. Based on the results obtained, it was possible to compare the GPR signal, which represents the shape of the cave hall, in relation to its image in the form of a point cloud from terrestrial laser scanning. A unique part of this paper is the selection of filtration procedures and their parameters in optimal GPR data processing, which were widely discussed and documented in a way beyond the standard filtration procedures. A significant contribution is the analysis that was carried out on the data obtained in the field and on the model data generated using the finite difference method. Modeling was carried out for two wave sources: exploding reflector and point. The presented methodology and discrimination between the actual shape of the cave, GPR field data and model data made it possible for the author to draw many conclusions related to the possibilities of shape geometrization of the subsurface voids determined by the GPR method.
    Źródło:
    Przegląd Geologiczny; 2019, 67, 4; 252--269
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-10 z 10

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