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    Wyświetlanie 1-8 z 8
    Tytuł:
    Temporary monitoring of areas prone to landslides illustrated with the example of the Klodne village
    Autorzy:
    Cwiakala, P.
    Drwal, P.
    Daroch, M.
    Grabek, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/61196.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
    Tematy:
    temporary monitoring
    landslide
    Klodne village
    control network
    displacement
    Opis:
    Mass wasting processes are very dangerous phenomena, mainly due to their unpredictability. Moreover, their tumultuous and rapid character has led to attempts of predicting the places of occurrence of such phenomena and to assess the possible threat. Unfortunately, it is not possible to monitor all potentially unstable areas, however, temporary monitoring of such areas, that are already activated, is legally required. Monitoring the area prone to mass movements is essential to assure the safety of its inhabitants and their possessions. The article presents the example of a surveying solution which was applied to monitor the landslide areas as well as their surroundings. The subject of the research was the landslide that occurred within the area of the Carpatians flysch in the village of Kłodne. Its activation, disastrous in its effects, occurred in 2010 and was caused by an intense rainfall. The first described stage of the research was the design and stabilisation of a control network. This resulted in the stabilisation of 68 points creating an observational network. The next stage, described in the article, was conducting two observational series using both satellite and classic measurement techniques. In the following part of the article, the results of the field measurements were discussed. The analysis of the results started with the calculation of coordinates of all points stabilised on the researched area in reference to the national spatial reference system. The calculations were made for each measurement series separately. After the conduction of works aimed at detecting fixed points in the creat ed surveying network, a slight horizontal displacement of several points located in the landslide area has been noticed. The determined displacements slightly exceed the values of measurement errors. In order to verify the obtained results, it is necessary to conduct more measurement series
    Źródło:
    Infrastruktura i Ekologia Terenów Wiejskich; 2014, IV/1
    1732-5587
    Pojawia się w:
    Infrastruktura i Ekologia Terenów Wiejskich
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    GNSS measurement techniques applied to establish a detailed control network based on the „Termy Warmińskie” example object
    Autorzy:
    Pelc-Mieczkowska, R.
    Pająk, K.
    Pająk, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/298186.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie
    Tematy:
    GPS measurement
    terrain obstacle
    POZGEO
    POZGEO-D
    control network
    Opis:
    This paper covers the issue of the establishment of a detailed control network for the realization of a construction survey pursuant to existing legislation, in particular: The Regulation of the Minister of Interior and Administration of November 9, 2011 on establishing technical standards of topographic surveys and processing of the results and submitting them to pzgik. (published in Polish: Rozporządzenie Ministra Spraw Wewnętrznych i Administracji z dnia 9 listopada 2011 w sprawie standardów technicznych wykonywania geodezyjnych pomiarów sytuacyjnych i wysokościowych oraz opracowywania i przekazywania wyników tych pomiarów do pzgik). Using the example of a detailed control network for the realization of the construction survey on the basis of the „Termy Warmińskie” object, various methods of GNSS observation processing were analysed and compared. The issue of the influence of some observation obstructions on the precision and accuracy of the results was also considered.
    Źródło:
    Technical Sciences / University of Warmia and Mazury in Olsztyn; 2014, 17(1); 15-29
    1505-4675
    2083-4527
    Pojawia się w:
    Technical Sciences / University of Warmia and Mazury in Olsztyn
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modernising the control network for determining displacements in hydraulic structures using automatic measurement techniques
    Autorzy:
    Zaczek-Peplinska, Janina
    Saloni, Lech
    Powiązania:
    https://bibliotekanauki.pl/articles/28411637.pdf
    Data publikacji:
    2023
    Wydawca:
    Instytut Technologiczno-Przyrodniczy
    Tematy:
    automatic measurement
    control network
    dams
    engineering geodesy
    geodetic displacement measurement
    LiDAR
    Opis:
    Over the last two decades, geodetic surveying has seen significant advancements with terrestrial and unmanned aerial vehicle (UAV) laser scanning, alongside automatic observations being increasingly utilised throughout the construction process. In the context of dam structures, periodic geodetic displacement measurements are a compulsory component of control measurements and safety assessments. In Poland, however, control measurements have largely remained rooted in traditional techniques such as classic linear and angular measurements and precise levelling. These methods are typically carried out within distinct control networks, i.e. without dual-function observation points and targets. Furthermore, network points (pillars, targets) have often not been renewed since their installation several decades ago, and glass discs, used for crown measurements in the baseline method, frequently face damage. Changes in property ownership and modifications in environmental regulations are compounded by these issues, which often impede the proper upkeep of the sight line. The article proposes the adaptation and reconstruction of control networks to incorporate automatic observation techniques, including linear and angular measurements. This approach includes activities aimed at reconstructing and supplementing damaged network structures, modernising the geodetic process of determining structure displacements, and enhancing the accuracy, credibility, and reliability of geodetic displacement measurement results. The article presents the findings of an inventory assessment conducted on the existing control network infrastructure, focusing on the analysis of displacements for structures with diverse constructions and functions - a concrete dam (class I) and a water damming weir with a water intake. Furthermore, it presents practical conclusions regarding the efficient organisation of geodetic control measurements.
    Źródło:
    Journal of Water and Land Development; 2023, 59; 66--75
    1429-7426
    2083-4535
    Pojawia się w:
    Journal of Water and Land Development
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Geodezyjna ocena osiadań powierzchni terenu wokół kopalni Bogdanka w latach 1976-1983
    Geodetic evaluation of terrain surface subsidence around mine shifts of KWK Bogdanka in 1976-1983
    Autorzy:
    Borowski, W.
    Zyga, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/390739.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Lubelska. Wydawnictwo Politechniki Lubelskiej
    Tematy:
    model dynamiczny
    sieć kontrolna
    odwodnienie górotworu
    dynamic model
    control network
    orogen drainage
    Opis:
    W artykule opisano próbę zastosowania dynamicznego modelu geodezyjnej sieci pomiarowo-kontrolnej do oceny procesu osiadania powierzchni terenów wiejskich wokół KWK Bogdanka, wywołanego odwodnieniem górotworu podczas drążenia szybów wydobywczych tej kopalni. Opracowanie archiwalnych materiałów pomiarowych z wykorzystaniem dynamicznego modelu sieci pomiarowej umożliwiło rozszerzenie interpretacji zaobserwowanego procesu osiadań na potencjalne parametry procesu odwodnienia, wpływające na konkretny przebieg procesu deformacji górotworu.
    An attempt to apply a measuring dynamic network model into land subsidence process evaluation is described in the presented essay. The surface subsidence process, occurring on rural areas around KWK Bogdanka, is suspected to be consequent upon orogen drainage, related to drilling of mining shafts. The elaboration of archival measuring data with the use of a dynamic model of measuring network enabled to extend the interpretation extension of the interpretation of the observed settlements process for potential drainage process parameters, affecting a specific rock deformation process.
    Źródło:
    Budownictwo i Architektura; 2013, 12, 3; 75-82
    1899-0665
    Pojawia się w:
    Budownictwo i Architektura
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of accuracy of determination of eccentric point coordinates of the KRAW permanent geodetic station in RTK GPS measuring mode with the application of the NAWGEO service of the ASG-EUPOS system
    Analiza dokładności współrzędnych punktów ekscentrycznych stacji permanentnej KRAW w trybie pomiaru RTK GPS z wykorzystaniem serwisu NAWGEO systemu ASG-EUPOS
    Autorzy:
    Krzyżek, R.
    Skorupa, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/385649.pdf
    Data publikacji:
    2012
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    ASG-EUPOS
    RTK GPS
    NAWGEO service
    control network
    serwis NAWGEO
    osnowa pomiarowa
    ekscentry
    Opis:
    A short analysis of the behaviour of the spatial coordinates of eccentric points KRA8 and KRA9 of the KRAW permanent geodesic station in the ASG EUPOS system over time was conducted. Measurements were conducted on eccentric points in real time in RTK GPS mode, over several measuring cycles. Two GPS receivers of various manufacturers were applied for research measurements. Obtained measurement results - spatial coordinates - were related to values accepted as error free, obtained from the ETRV 2000 measuring campaign.
    W pracy dokonano krótkiej analizy kształtowania się w czasie współrzędnych przestrzennych punktów ekscentrycznych KRA8 i KRA9 stacji permanentnej KRAW systemu ASG EUPOS. Wykonano pomiary na punktach ekscentrycznych w czasie rzeczywistym w trybie RTK GPS w kilku cyklach pomiarowych. Do pomiarów badawczych zastosowano dwa odbiorniki GPS różnych producentów. Uzyskane wyniki pomiarów - współrzędne przestrzenne - odniesiono do wartości przyjętych za bezbłędne, otrzymanych z kampanii pomiarowej ETRV 2000.
    Źródło:
    Geomatics and Environmental Engineering; 2012, 6, 4; 35-46
    1898-1135
    Pojawia się w:
    Geomatics and Environmental Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Control network analysis of the dam "Wióry"
    Autorzy:
    Walo, J.
    Szpunar, R.
    Woźniak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/225005.pdf
    Data publikacji:
    2007
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    zapora ziemna
    sieć kontrolna
    Wióry
    pomiary geodezyjne
    earth dam
    control network
    engineering surveying
    Opis:
    The obtained results of the test measurements in the control network of the dam Wióry show that combined usage of length measurements and GPS observations enables to obtain high accuracy and reliability in defining point coordinates. The real determination accuracy of checkpoint displacements in this type of networks is at the level of (plus minus) 2-3mm. However, it should be added that in small networks covering an area up to 1 km in radius, classical measurements (most of all, length measurements) enable to obtain higher accuracies in determining point coordinates, obviously on condition that the net structure is well-designed and length measurement is possible. Having analyzed the obtained results, one can also formulate the following conclusions: - the assumed structure of a modified test network shows effective accuracy both for EDM measurements and GPS observations, - satellite measurements enable combined and direct observation of points between which there is no sight line. It is especially important in the case of reference points which are usually located around the monitored object, and it is rarely possible to link them by means of classical measurements; - GPS measurements make it possible to check the monitored network independently, at least limiting the incidence of major and systematic errors in processing the results and defining displacement values; so GPS observations may, in the case of small control networks, be treated as control measurements made periodically (e.g. every year); - accuracy assessment made for TDA5005 tachymeter observations even in the case of considerable target inclinations, made by means of standard reflectors, attested reflexive foil and CCR fulfills monitoring requirements of specific point (targets), enabling to obtain an accuracy of the (plus minus) 0.5 mm range in relation to reference points; - linear measurements in the test network of Wiory, made by means of a TDA5005 tachymeter and high precision reflectors can be accomplished within 2-3 days.
    Źródło:
    Reports on Geodesy; 2007, z. 1/82; 376-380
    0867-3179
    Pojawia się w:
    Reports on Geodesy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analiza możliwości zintegrowania sieci miejscowej z wybranym systemem bazowym
    Integration of the field network and existing transmission base system
    Autorzy:
    Kościelnik, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/320347.pdf
    Data publikacji:
    2006
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    sieć miejscowa
    sieć kontrolno-sterująca
    magistrala styku S
    integracja systemów
    field network
    control network
    S-bus
    system integration
    Opis:
    W artykule przedstawiono koncepcję zintegrowania sieci kontrolno-sterującej z magistralą styku S podsieci abonenckiej ISDN. Proponowane rozwiązanie zakłada zachowanie całkowitej kompatybilności budowanego systemu z obowiązującymi unormowaniami. Zaletą przedstawianego systemu jest radykalne obniżenie kosztów wdrażania sieci miejscowej, wynikającego z wykorzystania do jej budowy istniejącego już okablowania oraz produkowanych masowo interfejsów transmisyjnych. System kontrolno-sterujący przejmuje ponadto sprawdzone mechanizmy i protokoły transmisyjne, gwarantujące jego stabilność i niezawodność.
    The article presents an idea of integration of a control network with the S-bus of an ISDN user network. The proposed solution assumes to assure a complete compatibility of the constructed system with the effective standards. The main advantage of the solution consists in an important reduction of costs related to the implementation of a field network, resulting from the utilisation of the existing cabling as well as manufactured in huge quantities transmission interfaces. Moreover, the control and monitoring system uses proven mechanisms and transmission protocols, which guarantee its stability and reliability.
    Źródło:
    Elektrotechnika i Elektronika; 2006, 25, 2; 97-105
    1640-7202
    Pojawia się w:
    Elektrotechnika i Elektronika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Geodetic monitoring of earth-filled flood embankment subjected to variable loads
    Autorzy:
    Kuras, P.
    Ortyl, Ł.
    Owerko, T.
    Borecka, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/106723.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Warszawska. Wydział Geodezji i Kartografii
    Tematy:
    flood embankment
    river levee
    geodetic monitoring
    control network
    displacements
    wał przeciwpowodziowy
    monitoring geodezyjny
    sieć sterowania
    przemieszczenia
    Opis:
    The article presents an example of supplementing geotechnical monitoring with geodetic observations. The experimental flood embankment built within the ISMOP project (Information Technology System of Levee Monitoring) was subjected to continuous monitoring based on built-in measuring sensors. The results of geodetic monitoring used for observation of earth-filled flood embankment subjected to external loads are presented in the paper. The tests were carried out on an experimental flood embankment forming a closed artificial water reservoir. The observations were carried out for two purposes. The first was long-term monitoring, which was aimed to determine the behaviour of the newly built embankment. The second purpose was to check the reaction of the levee to the simulated flood wave, caused by filling and draining the reservoir. In order to monitor the displacements of the earth-filled embankment, it was necessary to develop the proper methodology. For the needs of research works, an appropriate network of 5 reference points and 48 survey markers has been designed and established. The periodic measurements were carried out using precise robotic total station. The stability of the reference frame was each time checked and displacements of survey markers were determined based on it. The final results allow to reveal the reaction of levee to external loads. The displacement values were referred to the course of the filling and draining experiment to indicate the relationship between them. In the field of long-term monitoring the results clearly imply the dominance of displacements outside the reservoir for points located on the embankment, in contrast to points on the crest and foreground, which do not show significant movements. On the other hand, in the field of testing the embankment reaction to the flood wave, obtaining reliable results was possible thanks to high-accuracy geodetic measurements. Small displacement values, often at the level of their determination errors, were averaged for groups of points with the same height of foundation. A sizable number of points allows to perceive some tendencies and the relation between embankment soaking and its movement directions can be noticed. During periods when the levee was still saturated with water, slight movements outside the reservoir were revealed. On the other hand, the following period of drying caused movement in the opposite direction.
    Źródło:
    Reports on Geodesy and Geoinformatics; 2018, 106; 9-18
    2391-8365
    2391-8152
    Pojawia się w:
    Reports on Geodesy and Geoinformatics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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