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Tytuł:
Manufacturing entities flare systems fire hazard analysis
Autorzy:
Afanasenko, Kostiantyn
Lypovyi, Volodymyr
Zimin, Serhii
Powiązania:
https://bibliotekanauki.pl/articles/1537529.pdf
Data publikacji:
2020
Wydawca:
Centrum Rzeczoznawstwa Budowlanego Sp. z o.o.
Tematy:
flare systems
hazard analysis
fire hazard
system pochodni
analiza zagrożeń
zagrożenie pożarowe
pochodnia gazowa
Opis:
Industrial enterprises of chemical, petrochemical, energy complexes, in the technological process of which combustible gases, flammable and combustible liquids rotate, have flare systems, which are designed for smokeless combustion of combustible and toxic gases or vapors as a result of their periodic, emergency or permanent venting. The main task of flare systems at enterprises is to prevent gas from atmosphere entering by flaring. Flare systems of a manufacturing entities are a complex of structures of high fire danger. The task of the work is to analyze the parameters of the explosion that may occur during the formation of an emergency situation on flare systems.
Źródło:
Inżynieria Bezpieczeństwa Obiektów Antropogenicznych; 2021, 1; 9-14
2450-1859
2450-8721
Pojawia się w:
Inżynieria Bezpieczeństwa Obiektów Antropogenicznych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Non-ergodic probabilistic seismic hazard methodology using physics-based ground motion prediction: the case of LAquila, Italy
Autorzy:
Aguirre, Jedidiah Joel
Rubino, Bruno
Vassallo, Maurizio
Di Giulio, Giuseppe
Visini, Francesco
Powiązania:
https://bibliotekanauki.pl/articles/1950802.pdf
Data publikacji:
2022-02-05
Wydawca:
Politechnika Gdańska
Tematy:
non-ergodic probabilistic seismic hazard analysis
physics-based ground motionprediction
modified time-weakening friction law
peak ground acceleration
hazard curve
City of L’Aquila
analiza zagrożeń sejsmicznych
przewidywanie ruchu naziemnego
zmodyfikowane prawo tarcia
szczytowe przyspieszenie naziemne
krzywa zagrożenia
L'aquila
Opis:
A non-ergodic probabilistic seismic hazard analysis (PSHA) utilizing the physics-based ground motion prediction was proposed in this study to minimize the increasing uncertainties in the use of empirical equations. The City of L’Aquila in Italy was used for illustrative purposes due to the availability of data and the historical seismicity of the site. A total of 28 seismic sources were identified in this study located within a 100 km radius from the city. Fault properties such as geometry and location were obtained from the literature, while the fault occurrence rates were obtained using the FiSH Code. A modified time-weakening friction law was proposed to model the seismic energy released by an earthquake. Uncertainties in different rupture scenarios were characterized through the Guttenberg-Richter Relations and the Characteristic Brownian Time Passage. Uncertainties in distances were characterized through probability mass functions, which were used to calculate the ground motion exceedance probabilities. The 1D elastodynamic equation coupled with the Hooke’s law was used to predict the peak ground acceleration (PGA), a measure of the ground shaking level. A hazard curve, which is a plot of PGA and its recurrence, was constructed and compared with the results of the study of Valentini, et al., AGU 100: Advancing Earth and Space Science (2019). The method proposed in this study predicts a higher hazard rates for PGAs less than 0.70 g, which implies that the ground motion was overestimated for very far sources. In contrast, lower hazard curves were observed for PGAs greater than 0.70g which can be attributed to fewer seismic sources considered in this study.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2020, 24, 2; 97-185
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Non-ergodic probabilistic seismic hazard methodology using physics-based ground motion prediction: the case of LAquila, Italy - Appendices
Autorzy:
Aguirre, Jedidiah Joel
Rubino, Bruno
Vassallo, Maurizio
Di Giulio, Giuseppe
Visini, Francesco
Powiązania:
https://bibliotekanauki.pl/articles/2035851.pdf
Data publikacji:
2020
Wydawca:
Politechnika Gdańska
Tematy:
non-ergodic probabilistic seismic hazard analysis
physics-based ground motion prediction
modified time-weakening friction law
peak ground acceleration
hazard curve
City of L’Aquila
analiza zagrożeń sejsmicznych
przewidywanie ruchu naziemnego
zmodyfikowane prawo tarcia
szczytowe przyspieszenie naziemne
krzywa zagrożenia
L'aquila
Opis:
A non-ergodic probabilistic seismic hazard analysis (PSHA) utilizing the physics-based ground motion prediction was proposed in this study to minimize the increasing uncertainties in the use of empirical equations. The City of L’Aquila in Italy was used for illustrative purposes due to the availability of data and the historical seismicity of the site. A total of 28 seismic sources were identified in this study located within a 100 km radius from the city. Fault properties such as geometry and location were obtained from the literature, while the fault occurrence rates were obtained using the FiSH Code. A modified time-weakening friction law was proposed to model the seismic energy released by an earthquake. Uncertainties in different rupture scenarios were characterized through the Guttenberg-Richter Relations and the Characteristic Brownian Time Passage. Uncertainties in distances were characterized through probability mass functions, which were used to calculate the ground motion exceedance probabilities. The 1D elastodynamic equation coupled with the Hooke’s law was used to predict the peak ground acceleration (PGA), a measure of the ground shaking level. A hazard curve, which is a plot of PGA and its recurrence, was constructed and compared with the results of the study of Valentini, et al., AGU 100: Advancing Earth and Space Science (2019). The method proposed in this study predicts a higher hazard rates for PGAs less than 0.70 g, which implies that the ground motion was overestimated for very far sources. In contrast, lower hazard curves were observed for PGAs greater than 0.70g which can be attributed to fewer seismic sources considered in this study.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2020, 24, 2; 166-182
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Non-ergodic probabilistic seismic hazard methodology using physics-based ground motion prediction: the case of LAquila, Italy - Part I Theoretical background
Autorzy:
Aguirre, Jedidiah Joel
Rubino, Bruno
Vassallo, Maurizio
Di Giulio, Giuseppe
Visini, Francesco
Powiązania:
https://bibliotekanauki.pl/articles/2035834.pdf
Data publikacji:
2020
Wydawca:
Politechnika Gdańska
Tematy:
non-ergodic probabilistic seismic hazard analysis
physics-based ground motion prediction
modified time-weakening friction law
peak ground acceleration
hazard curve
City of L’Aquila
analiza zagrożeń sejsmicznych
przewidywanie ruchu naziemnego
zmodyfikowane prawo tarcia
szczytowe przyspieszenie naziemne
krzywa zagrożenia
L'aquila
Opis:
A non-ergodic probabilistic seismic hazard analysis (PSHA) utilizing the physics-based ground motion prediction was proposed in this study to minimize the increasing uncertainties in the use of empirical equations. The City of L’Aquila in Italy was used for illustrative purposes due to the availability of data and the historical seismicity of the site. A total of 28 seismic sources were identified in this study located within a 100 km radius from the city. Fault properties such as geometry and location were obtained from the literature, while the fault occurrence rates were obtained using the FiSH Code. A modified time-weakening friction law was proposed to model the seismic energy released by an earthquake. Uncertainties in different rupture scenarios were characterized through the Guttenberg-Richter Relations and the Characteristic Brownian Time Passage. Uncertainties in distances were characterized through probability mass functions, which were used to calculate the ground motion exceedance probabilities. The 1D elastodynamic equation coupled with the Hooke’s law was used to predict the peak ground acceleration (PGA), a measure of the ground shaking level. A hazard curve, which is a plot of PGA and its recurrence, was constructed and compared with the results of the study of Valentini, et al., AGU 100: Advancing Earth and Space Science (2019). The method proposed in this study predicts a higher hazard rates for PGAs less than 0.70 g, which implies that the ground motion was overestimated for very far sources. In contrast, lower hazard curves were observed for PGAs greater than 0.70g which can be attributed to fewer seismic sources considered in this study.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2020, 24, 2; 97-137
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Non-ergodic probabilistic seismic hazard methodology using physics-based ground motion prediction: the case of LAquila, Italy - Part II Methodology
Autorzy:
Aguirre, Jedidiah Joel
Rubino, Bruno
Vassallo, Maurizio
Di Giulio, Giuseppe
Visini, Francesco
Powiązania:
https://bibliotekanauki.pl/articles/2035843.pdf
Data publikacji:
2020
Wydawca:
Politechnika Gdańska
Tematy:
non-ergodic probabilistic seismic hazard analysis
physics-based ground motion prediction
modified time-weakening friction law
peak ground acceleration
hazard curve
City of L’Aquila
analiza zagrożeń sejsmicznych
przewidywanie ruchu naziemnego
zmodyfikowane prawo tarcia
szczytowe przyspieszenie naziemne
krzywa zagrożenia
L'aquila
Opis:
A non-ergodic probabilistic seismic hazard analysis (PSHA) utilizing the physics-based ground motion prediction was proposed in this study to minimize the increasing uncertainties in the use of empirical equations. The City of L’Aquila in Italy was used for illustrative purposes due to the availability of data and the historical seismicity of the site. A total of 28 seismic sources were identified in this study located within a 100 km radius from the city. Fault properties such as geometry and location were obtained from the literature, while the fault occurrence rates were obtained using the FiSH Code. A modified time-weakening friction law was proposed to model the seismic energy released by an earthquake. Uncertainties in different rupture scenarios were characterized through the Guttenberg-Richter Relations and the Characteristic Brownian Time Passage. Uncertainties in distances were characterized through probability mass functions, which were used to calculate the ground motion exceedance probabilities. The 1D elastodynamic equation coupled with the Hooke’s law was used to predict the peak ground acceleration (PGA), a measure of the ground shaking level. A hazard curve, which is a plot of PGA and its recurrence, was constructed and compared with the results of the study of Valentini, et al., AGU 100: Advancing Earth and Space Science (2019). The method proposed in this study predicts a higher hazard rates for PGAs less than 0.70 g, which implies that the ground motion was overestimated for very far sources. In contrast, lower hazard curves were observed for PGAs greater than 0.70g which can be attributed to fewer seismic sources considered in this study.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2020, 24, 2; 137-153
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Non-ergodic probabilistic seismic hazard methodology using physics-based ground motion prediction: the case of LAquila, Italy - Part III Results and Discussion
Autorzy:
Aguirre, Jedidiah Joel
Rubino, Bruno
Vassallo, Maurizio
Di Giulio, Giuseppe
Visini, Francesco
Powiązania:
https://bibliotekanauki.pl/articles/2035849.pdf
Data publikacji:
2020
Wydawca:
Politechnika Gdańska
Tematy:
non-ergodic probabilistic seismic hazard analysis
physics-based ground motion prediction
modified time-weakening friction law
peak ground acceleration
hazard curve
City of L’Aquila
analiza zagrożeń sejsmicznych
przewidywanie ruchu naziemnego
zmodyfikowane prawo tarcia
szczytowe przyspieszenie naziemne
krzywa zagrożenia
L'aquila
Opis:
A non-ergodic probabilistic seismic hazard analysis (PSHA) utilizing the physics-based ground motion prediction was proposed in this study to minimize the increasing uncertainties in the use of empirical equations. The City of L’Aquila in Italy was used for illustrative purposes due to the availability of data and the historical seismicity of the site. A total of 28 seismic sources were identified in this study located within a 100 km radius from the city. Fault properties such as geometry and location were obtained from the literature, while the fault occurrence rates were obtained using the FiSH Code. A modified time-weakening friction law was proposed to model the seismic energy released by an earthquake. Uncertainties in different rupture scenarios were characterized through the Guttenberg-Richter Relations and the Characteristic Brownian Time Passage. Uncertainties in distances were characterized through probability mass functions, which were used to calculate the ground motion exceedance probabilities. The 1D elastodynamic equation coupled with the Hooke’s law was used to predict the peak ground acceleration (PGA), a measure of the ground shaking level. A hazard curve, which is a plot of PGA and its recurrence, was constructed and compared with the results of the study of Valentini, et al., AGU 100: Advancing Earth and Space Science (2019). The method proposed in this study predicts a higher hazard rates for PGAs less than 0.70 g, which implies that the ground motion was overestimated for very far sources. In contrast, lower hazard curves were observed for PGAs greater than 0.70g which can be attributed to fewer seismic sources considered in this study.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2020, 24, 2; 153-166
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Model of the Tactical Aircraft Operating System as an aggregated analysis domain for hazard risk management processes
Autorzy:
Augustyn, E.
Kadziński, A.
Smoczyński, P.
Powiązania:
https://bibliotekanauki.pl/articles/196637.pdf
Data publikacji:
2018
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
tactical air force
Tactical Air Force System
Tactical Aircraft Operating System model
aggregated analysis domain
hazard risk management
taktyczne siły powietrzne
Opis:
The Tactical Aircraft Operating System (a system for tactical aircraft operational usage) constitutes the main research area of this paper. The authors present this system via an innovative model for an anthropotechnical system in the format of an aggregated analysis domain. This model constitutes a detailed explication of a fragment of the existing Tactical Air Force System metamodel at the level that concerns tactical aircraft operation systems. The aggregated analysis domain for tactical aircraft operations is built on seven single-analysis domain, each of which includes a series of processes, operations and events, related to the airman’s aviation activities cycle, what happens during an air mission and when an aircraft operating cycle is carried out. The subsequent individual analysis domains are connected to each other by an airman-aircraft anthropotechnical pair. The introduced method of modelling the Tactical Aircraft Operating System ensures the desired generality, comprehensiveness, coherence and transparency of such a model, which allows for its implementation in various types of tactical aircraft and tactical air force bases. In principle, within the presented considerations, the model is described in relation to a single aircraft operating cycle, which is carried out by one airman during a single air mission. However, the authors have taken care when creating this model structure, so that its implementation in more complex aircraft operating cycles (more than one aircraft and one airman) is possible. Apart from the analysis domains (“before take-off”, “departure”, “air task”, “arrival”, “after landing”), which are closely related to the essential aircraft operations, the model also includes the analysis domains associated with air mission preparations and summaries. The model for the Tactical Aircraft Operating System is described by the authors in textual form, as well as in tabular form. The presented concept constitutes an attempt to formally notate the Tactical Aircraft Operating System model, in which each of the individual analysis domains can be treated as an area of interest for hazard risk management processes within the Tactical Air Force System.
Źródło:
Zeszyty Naukowe. Transport / Politechnika Śląska; 2018, 101; 15-26
0209-3324
2450-1549
Pojawia się w:
Zeszyty Naukowe. Transport / Politechnika Śląska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wykorzystanie analizy time-history podczas projektowania konstrukcji w rejonach aktywnych sejsmicznie
Application of time-history analysis in the design of constructions in seismically active regions
Autorzy:
Bąk, M.
Powiązania:
https://bibliotekanauki.pl/articles/162631.pdf
Data publikacji:
2017
Wydawca:
Polski Związek Inżynierów i Techników Budownictwa
Tematy:
konstrukcja budowlana
projektowanie
obszar sejsmiczny
ryzyko sejsmiczne
ocena ryzyka
podejście probabilistyczne
analiza czas-historia
akcelerogram
building structure
designing
seismic area
seismic hazard
risk evaluation
probabilistic approach
time-history analysis
accelerograph
Opis:
Obciążenia sejsmiczne ze względu na swój losowy charakter stanowią jedno z większych wyzwań stawianych współczesnej inżynierii. Na obszarze Polski problem naturalnej sejsmiczności jest niewielki i dotyczy głównie obszaru wzdłuż południowej granicy. Większe zainteresowanie trzęsieniami ziemi ma związek z coraz częstszym projektowaniem obiektów zlokalizowanych w rejonach o podwyższonej aktywności sejsmicznej, poza terenami Polski. Artykuł skupia się na odpowiednim wyborze danych, służących do przeprowadzania analiz w dziedzinie czasu (time-history), które ze względu na coraz większą uwagę zwracaną na przewidywanie zachowania konstrukcji (performance based design), są powszechniej stosowane.
Due to their random nature, seismical loads pose one of greater challenges to modern engineering. Within the territory of Poland, the problem of natural seismicity is little and it concerns mainly the area along the southern border. Greater interest in earthquakes stems from more and more frequent cases of designing facilities located in regions with increased seismical activity outside Poland. The article focuses on adequate selection of data which serve to perform analyses in the time-history scope, which are more commonly used due to constantly growing attention devoted to predicting the construction behaviour (performance based design).
Źródło:
Przegląd Budowlany; 2017, 88, 5; 37-46
0033-2038
Pojawia się w:
Przegląd Budowlany
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zagrożenie pękaniem rurociągów wykonanych z polietylenu
Crack hazard in PE pipelines
Autorzy:
Baranowski, W.
Werner, K.
Kula, M.
Powiązania:
https://bibliotekanauki.pl/articles/160460.pdf
Data publikacji:
2014
Wydawca:
Polski Związek Inżynierów i Techników Budownictwa
Tematy:
rura polietylenowa
złącze
zgrzewanie doczołowe
rurociąg
zagrożenie pękaniem
badanie doświadczalne
analiza obliczeniowa
polyethylene pipe
joint
butt weld
cracking hazard
experimental research
calculation analysis
Opis:
W pracy przedstawiono wyniki obliczeń i analizę krytycznych wielkości wad w postaci szczelin wewnętrznych, które mogą zawierać rury z polietylenu oraz ich doczołowe złącza zgrzewane. Przy krytycznej wielkości szczeliny może nastąpić zainicjowanie procesu pękania. Rurociągi z polietylenu są stosowane do przesyłania płynów i gazów o niskiej temperaturze (zimna woda, paliwa gazowe) oraz różnych płynów agresywnych i wody o podwyższonej temperaturze, używanych w przemysłowych procesach technologicznych. W przeprowadzonej analizie uwzględniono możliwość wystąpienia wcześniej zjawiska pełzania tworzywa w podwyższonej temperaturze.
The paper presents the results of calculations and analysis of critical values of internal gaps which can occur in PE pipes and their but weld joints. The cracking process can start at a critical size of the gap. The PE pipelines are used to transport liquids and gases at low temperatures (cold water, gas fuels) and other aggressive liquids and water at elevated temperatures used in industrial technological processes. The analysis accounts for a possibility of previous occurrence of polyethylene creep at elevated temperatures.
Źródło:
Przegląd Budowlany; 2014, R. 85, nr 12, 12; 50-54
0033-2038
Pojawia się w:
Przegląd Budowlany
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Identification of Ergonomic-Related Hazards in an Industrial Sample Using the National Occupational Exposure Survey
Autorzy:
Biersner, R. J.
Winn Jr., F. J.
Powiązania:
https://bibliotekanauki.pl/articles/89913.pdf
Data publikacji:
1998
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
exposure
hazard analysis
occupational hazard survey
safety and health climate
vibration
analiza zagrożeń
ryzyko zawodowe
bezpieczeństwo i ochrona zdrowia
Opis:
The National Occupational Exposure Survey (NOES) was used to determine probabilities for 4 potential physical-agent and 10 potential ergonomic-related exposure hazards among a representative sample of U.S. industries. Potential physical-agent hazard exposures, principally whole-body and segmental vibration, were highest among railroad and heavy construction industries. Several construction industries had high probabilities of potential ergonomic-related exposure hazards, especially to the back and upper extremities. Establishments with 100 to 249 employees had the highest probability of potential exposures to the 2 types of hazards. Measures of safety and health climate did not differ consistently between high-hazard and low-hazard establishments. The approach taken in this paper may be used to help identify highrisk industries, evaluate interventions, and develop inspection strategies.
Źródło:
International Journal of Occupational Safety and Ergonomics; 1998, 4, 3; 299-316
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Płeć, wiek i wykształcenie osób bezrobotnych jako determinanty czasu poszukiwania pracy
Gender, age and education of the unemployedas the determinants of job searching time
Autorzy:
Bieszk-Stolorz, Beata
Markowicz, Iwona
Powiązania:
https://bibliotekanauki.pl/articles/424909.pdf
Data publikacji:
2013
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
unemployment
survival analysis
Cox’s proportional hazard model
Opis:
The paper presents results of survey concerning the influence of gender, age and education of the unemployed on job searching time. For the sake of specificity of survey, especially in case of censored data, the Cox’s proportional hazard model has been used for the identification of determinants and research their influence for time needed to take up a job. To the model, except independent variables, their interactions that enable the calculation of interplay of researched variables have been included. 20846 persons registered as unemployed in the Local Labour Office in Szczecin and due to various reasons unregistered in 2010 have been included in the research. If unregistering occurred due to different reasons than finding a job, such an observation has been considered as censored.
Źródło:
Econometrics. Ekonometria. Advances in Applied Data Analytics; 2013, 2(40); 74-86
1507-3866
Pojawia się w:
Econometrics. Ekonometria. Advances in Applied Data Analytics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wykrywanie usterek i tolerowalny poziom intensywności zagrożeń na przykładzie systemu UniAC1
Fault Detection and Tolerable Hazard Rate in UniACl System
Autorzy:
Bigus, M.
Ulatowski, W.
Powiązania:
https://bibliotekanauki.pl/articles/215593.pdf
Data publikacji:
2016
Wydawca:
Instytut Kolejnictwa
Tematy:
bezpieczeństwo
bezpieczeństwo na kolei
system liczenia osi
sterowanie ruchem kolejowym
analiza zagrożeń
safety
railway safety
axle counting system
railway signaling
hazard analysis
Opis:
W artykule przedstawiono metody analizy zagrożeń z uwzględnieniem różnych rodzajów uszkodzeń. Opisano rozwiązania analityczne umożliwiające obliczenie intensywności zagrożeń złożonej struktury elektronicznej, charakteryzującej się różną dynamiką bloków przetwarzania i co za tym idzie różnymi czasami wykrywania poszczególnych usterek. Przedstawiono także sposób uwzględnienia intensywności zagrożeń pochodzącej od usterek niewykrywalnych.
In the presentation, the hazard analysis methods considering different types of failures and a difference between optimistic and pessimistic approach are presented. It shows analytic solutions helpful in calculation of hazard rate for complex electronic structure, which is characterized by different dynamic of processing blocks and different fault detection times. What is more the presentation shows a method of adding hazard rate of undetected failures.
Źródło:
Problemy Kolejnictwa; 2016, 171; 17-20
0552-2145
2544-9451
Pojawia się w:
Problemy Kolejnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Method for a Drainage Roadway Location Determination for an Overlying Methane Drainage System
Wyznaczenia położenia chodnika drenażowego dla górnego systemu odprowadzania metanu
Autorzy:
Borowski, Marek
Cała, Marek
Powiązania:
https://bibliotekanauki.pl/articles/319175.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Przeróbki Kopalin
Tematy:
methane hazard
methane drainage
overlying drainage
drainage roadway
geomechanical analysis
numerical model
zagrożenie metanowe
odmetanowanie
górne odwodnienie
chodnik drenażowy
analiza geomechaniczna
model numeryczny
Opis:
The paper analyses possibilities to carry out methane drainage of a longwall in seam 510. A possibility to fight against the methane hazard was determined based on results of forecasting for methane emission to mine workings. A system of methane drainage was suggested for the adopted method of longwall face ventilation. The location of drainage roadway was determined for the selected methane drainage system. The paper includes a geomechanical analysis for a numerical model, which was aimed at determination of the optimum location of the drainage roadway in a seam overlying the longwall panel.
W artykule przedstawiono analizę możliwości prowadzenia odmetanowania ściany w pokładzie 510. Na podstawie wyników prognozy wydzielania metanu do wyrobisk górniczych określono możliwości zwalcza-nia zagrożenia metanowego. Zaproponowano system odmetanowania z chodnikiem drenażowym ponad eksploatowanym pokładem dla przyjętego sposobu przewietrzania wyrobiska ścianowego. Dla wybranego systemu odmetanowania wyznaczono lokalizację chodnika drenażowego. W artykule zamieszczono analizę geomechaniczną dla modelu numerycznego, której celem było określenie optymalnej lokalizacji chodnika drenażowego pokładzie wyżej leżącym nad polem eksploatacyjnym.
Źródło:
Inżynieria Mineralna; 2020, 1, 2; 201-207
1640-4920
Pojawia się w:
Inżynieria Mineralna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of a complex assessment of landslide hazards in mountain regions
Autorzy:
Boyko, K.E.
Powiązania:
https://bibliotekanauki.pl/articles/886584.pdf
Data publikacji:
2017
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
geology
landslide hazard
mountain region
geological structure
GIS analysis
factor analysis
stability index
SINMAP model
Stability Index MAPping zob.SINMAP model
Opis:
Application of a complex assessment of landslide hazards in mountain regions. The main regional factors of occurrence and activation of landslides within the mountain region were examined. As a result of study of recommendations made by experts, geologists, and gap analysis of existing methods of forecasting the landslide process, an algorithm of comprehensive assessment of landslide hazard areas based on the construction of models in a GIS environment was proposed. These models describe the spatial patterns of landslides. All factors determining the tendency of the studies area to the landslide process development were divided into actual factors, reflecting the regional peculiarities of the territory and forming the landslide-prone slopes (static model), as well as triggering factors, initiating the landslide process and determining its activity (dynamic model). The first cartographic model was built, showing the distribution of the deterministic indirect indicator of landslide hazard, i.e. stability index.
Źródło:
Scientific Review Engineering and Environmental Sciences; 2017, 26, 3[77]
1732-9353
Pojawia się w:
Scientific Review Engineering and Environmental Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Estimation of the Probability of Propulsion Loss by a Seagoing Ship Based on Expert Opinions
Autorzy:
Brandowski, A.
Frackowiak, W.
Powiązania:
https://bibliotekanauki.pl/articles/117585.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Probability
Propulsion Loss
estimation
seagoing ship
Expert Opinion
Hazard Analysis
Immediate Catastrophic Failure (ICF)
Risk Analysis
Opis:
The event of the loss of propulsion function has been defined as hazardous event to a seagoing ship. It has been formalized. The procedure of acquisition of expert opinions on frequency of the event occurrence has been described. It may be considered to be of a numerical-fuzzy character. The fuzzy part was transferred to the numerical form by the pair comparison method. An example of the ship propulsion system comprising a low speed internal combustion engine and a solid propeller illustrates the method presented. It may be used wherever a hazard analysis has to be performed of a system involving human and technical aspects and there is a shortage of objective data on the investigated object.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2009, 3, 4; 449-454
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 72

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