Wyniki wyszukiwania - BazTech

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Marking of escape routes in mining excavations – results of pilot test

Grodzicka Aneta, Plewa Franciszek, Krause Marcin, Rozmus Magdalena, Michalak Dariusz

Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska

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2023

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z. 176

129--152

EN

Purpose: The publication cancers one of problems related with safety in mining industry -the marking of escape routes in mining excavations. A review of literature on the subject and applicable legal regulations and standards, and authors’ study on the subject covering use of color-lighted signs created by them are presented. Design/methodology/approach: Literature studies were conducted: 1) to identify methods and findings in researches on marking of escape routes, described in scientific publications; 2) to define the requirements set out in legal acts and standards. The field study of the marking of escape routes was carried out in a training mine gallery in which there are conditions reflecting the real ones in underground mining excavations. The observations and questionnaire research were conducted during a training of a group of 20 professional mine rescuers. The following variables were set for the experiment: distance (5, 10 and 15 m), color (white, green, blue, red), shape (square, arrow). Findings: The article presents the results of pilot test in the field of the marking of escape routes in mine excavations. Different colors and shapes of the signs, and different distances of observation were taken into account. White color was found best to assure signs detectability but least appropriate if shape identification is required. Red and green colors were indicated as recommended if the shape identification is the evaluation criterion. Research limitations/implications: The research was dedicated to the underground mining industry, but can be adapted to other working sites where the evacuation takes place in similar conditions (lack of visibility and smoke). Practical implications: The research revealed among others that: 1) Polish regulations do not imply detailed rules as regards signage of escape routes in underground coal mines, which gives floor for development of new concepts and designs, 2) it is possible to propose color-lighted signs for effective marking escape routes in underground coal mines. Originality/value: The publication contains the original results of pilot test in the field of the marking of escape routes in mining excavations, and they can be addressed to persons managing mining plants and managers of mining supervision authorities.

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Assessing risky behavior based on survey research among mine rescuers

Grodzicka Aneta

Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska

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2023

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z. 172

253--269

EN

Purpose: The aim of the paper was to analyze risky behavior in the mining industry on the example of survey research among mine rescuers. Design/methodology/approach: The analysis of risky behaviors concerned the mine rescue service crew in a selected hard coal mine. The author's method of synthetic assessment of risky behaviors was used for the research. The surveys was conducted during rescue training on a group of 30 mine rescuers, which accounted for 25% of the crew's record. Findings: The article presents the results of a study of synthetic assessment of mine rescuers according to six problem areas (assessment parameters). The synthetic assessment of risky behavior is a method that allows individual assessment for each respondent in all areas. If one of the areas receives an abnormal rank, only one selected area can be re-evaluated after applying suggestions for improvement. Survey questionnaires consisting of closed-ended questions were used for each area. All respondents were given an option to give either affirmative or negative responses. Having obtained the sum of the assessment criterion ranks for each area, a synthetic assessment of risky behavior was interpreted for the surveyed mine rescuers. The summative assessment was then interpreted on a four-point scale: outstanding, satisfactory, normal, and abnormal. Out of the entire study group, only two subjects received an abnormal rating, each in one of the areas; the first respondent in the area of risky behavior, the second respondent in the area of risky behavior in situations of unbreathable air. For these two mine rescuers, detailed results for all areas were presented. Research limitations/implications: The research was dedicated to working conditions underground, but they can be adapted to working conditions on the surface, as well as to the specificity of other rescue services (e.g. firefighters, rescuers). Practical implications: The results of the research can be used as criteria for the selection of mine rescuers for the mine rescue service (rescue emergencies, rescue teams). Originality/value: The publication contains original results of research on risky behavior of mine rescuers, and they are addressed to the management of mining plants.

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Assessing risky behaviors based on the indicator analysis of statistics on accidents at work

Grodzicka Aneta

Management Systems in Production Engineering

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2023

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nr 4 (31)

389--397

EN

The aim of the paper was to analyze risky behaviors in the mining industry on the example of the indicator analysis of the statistics on accidents at work. Selected criteria of generic analysis (structure index – causes of accidents) and indicator analysis (intensity index – frequency indicator of accidents) were used in the research. The source of data for the analysis of accident rate were the publications of the Statistics Poland entitled “Accidents at work” in Poland for 2010-2021. The study aimed at human causes, which included the following five groups: lack or improper handling of a material factor by the employee, failure to use protective equipment by the employee, improper willful behavior of the employee, improper mental and physical state of the employee, improper behavior of the employee. For the analysis of risky behaviors, the proposition of the frequency indicator of accidents at work was used in the form of the probability indicator of accidents caused by risky behaviors per 1,000 working people. Based on the indicator analysis of risky behaviors, a comparative analysis of statistics on accidents at work in the period 2010-2021 according to the criterion of human causes was developed for Poland and mining. The research is based on the data of the Statistics Poland (GUS), but can be extended with other data, e.g. industry data according to the State Mining Authority (WUG). The results of the research can be used for a comparative analysis of the statistics on accidents at work in relation to other sectors and sections of economic activity of the NACE (PKD). The publication contains the original results of the indicator analysis of the statistics on accidents at work according to the criterion of human causes in the mining industry, and they can be addressed to persons managing of mining plants and managers of mining supervision authorities.

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Impact of suspension and route stabilization on dynamic parameters of self-driven mine suspended monorails

Szewerda Kamil, Tokarczyk Jarosław, Świder Jerzy, Grodzicka Aneta

Eksploatacja i Niezawodność

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2022

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Vol. 24, no. 4

617--628

EN

Impact of the method of suspension and route stabilization of suspended monorail on forces loading the roadway roof support system is presented. This is important in the context of possible increasing the speed of monorails during personnel movement. Nature of load and displacement of the route, as well as deceleration of the transport set, with a dynamic excitation - an emergency braking of the transport set, are presented. The results are presented for seven configurations of slings and lashings stabilizing the route. The Head Injury Criterion (HIC), recorded using the Articulated Total Body (HYBRID III) model, during the impact of operator's cabin against an obstacle, is presented in the further part of the article. Analyzes are aimed at developing the guidelines to ensure safety of mining personnel (without exceeding the accepted overloads) and mining infrastructure (without exceeding the maximum accepted load of the roadway support) during operation of the suspended monorail at higher speed. Analyzes are the result of the authors numerical simulations.

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One-Day Prognoses of Methane Concentrations for the 102 Longwall in the 325/1 Seam in the “W” Coal Mine Operating in a Continuous System

Grodzicka Aneta, Badura Henryk, Shaidurova Natalia, Sentyakov Kirill, Sviatskii Vladislav

New Trends in Production Engineering

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2020

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Vol. 3, Iss. 1

169--185

EN

The first part of the paper concerns the natural deposition conditions of the 325/1 seam in the “W” coal mine, in the 102 longwall mining panel. It also presents the most important technical conditions regarding the exploitation at this longwall. To characterize the methane hazard in the longwall area, the parameters of ventilation and total methane concentrations as well as the volumetric flowrate of methane captured by the methane removal system, have been presented graphically. A significant part of the methane flow in the longwall area was released to the air flowing to the longwall. The most significant part of the article is the presentation and analysis of the results of prognoses of mean methane concentrations at the exhaust of the longwall area. The accuracy of the prognoses of methane concentration was verified using two methods: while not considering the release of methane to the air flowing to the longwall and while considering the total flowrate of methane to the ventilation air in the area of the 102 longwall. The method of forecast presented in the article has so far been checked for a 5-day and 6-day work day, as well as for walls operating in a non-regular mode. The article refers to the wall operating in a continuous mode, which required adaptation of the proposed method to this mode. The application of the one-day forecast proposed in the article allows for undertaking temporary methane prevention measures enabling safe use of the wall.

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Wyniki badań linek ratowniczych w aspekcie szybkości ich zakładania i poruszania się w zadymionej komorze ćwiczeń przez zastępy ratownicze

Koszyk Mariusz, Grodzicka Aneta, Rzepecki Słowomir

Bezpieczeństwo Pracy i Ochrona Środowiska w Górnictwie

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2019

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nr 12

15--23

PL

W artykule przedstawiono wyniki badań linek ratowniczych trzech typów, używanych przez zakłady górnicze oraz OSRG Bytom – Zabrze zarówno podczas prowadzenia akcji, jak i ćwiczeń ratowniczych. Celem analiz było określenie czasu zapinania i odpinania oraz sposobu poruszania się zastępów ratowniczych w aparatach regeneracyjnych W-70 w zadymionych wyrobiskach komory ćwiczeń OSRG Bytom – Zabrze oraz w warunkach bez zadymienia.

EN

In mines, rescue operations are often performed in excavations filled with smoke and with the use of breathing apparatus. Such excavations may only be entered when rescue lines are used, while any activities connected with rescue line fastening should be performed quickly and effectively to avoid the separation of the rescue team. In 2018, tests involving rescue lines were performed at the Bytom – Zabrze District Mine Rescue Station. The objective of the tests was to determine the time required to fasten and detach such lines and to determine how rescue teams move in the W-70 breathing apparatus both in test chamber excavations filled with smoke and in such excavations without smoke. Three rescue teams from three mines participated in the tests. Three types of rescue lines were used: a reflective one with a length of 10 m, of GL087 Protekt type with a length of 8.5 m, and a line with fastening hooks 5.5 m long. During the tests, the rescuers performed exercises in three stages, in different and specific places of the test chamber. All stages involved the time required to perform exercises by individual rescue teams. The tests revealed that each line was successful in its purpose. At any stage rescue teams did not separate and the line did not detach accidentally. Nevertheless, all exercise stages were completed the fastest with a 5.5 m rescue line with fastening hooks.