Risk assessment of gas explosion in coal mines based on fuzzy AHP and bayesian network

Li, Min; Wang, Hetang; Wang, Deming; He, Shan

doi:10.1016/j.psep.2020.01.003

Cited by 177 publications

(64 citation statements)

References 44 publications

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“…Fuzzy comprehensive evaluation uses the principle of fuzzy linear transformation and the principle of maximum membership degree, for indicators to be evaluated, which evaluates comprehensively from each index of the lowest layer, and it goes up till the highest target level in turn. Finally, the final evaluation result is obtained [29][30][31]. e main steps include determination of evaluation index and evaluation set, calculation of membership degree, and comprehensive evaluation.…”

Section: Fuzzy Comprehensive Evaluationmentioning

confidence: 99%

Evaluation of Cloud Computing Copyright Protection Based on AHP

Peng

2020

Mathematical Problems in Engineering

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To increase the protection level of copyright in cloud computing environment, aiming at the problems that the indicators in the copyright protection evaluation system are difficult to accurately define and cannot be quantified, a comprehensive evaluation model of copyright protection based on the combination of analytic hierarchy process and fuzzy comprehensive evaluation is proposed. First, using the analytic hierarchy process (AHP), the copyright protection evaluation system is constructed and the weight of each evaluation index is determined through the judgment matrix. Then the quantitative evaluation result is fuzzy operated through index weight and evaluated data. Finally, the simulation evaluation results on specific example show that this model is reasonable and effective, and it can provide the evaluation basis and practical reference for copyright protection evaluation in cloud computing environment.

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Section: Fuzzy Comprehensive Evaluationmentioning

confidence: 99%

Evaluation of Cloud Computing Copyright Protection Based on AHP

Peng

2020

Mathematical Problems in Engineering

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“…Zadeh first introduced fuzzy set theory to express the subjectivity and vagueness of human judgment [21][22][23]. R. Jain, and D. Dubois et al [24][25] presented the concept of fuzzy numbers.…”

Section: A Fuzzy Number Theory 1) Fuzzy Number Operation and Fuzzy Lmentioning

confidence: 99%

“…In this paper, expert fuzzy linguistic terms are used to evaluate the unit probability [22][32] [33]. The fuzzy linguistic terms have the corresponding triangular fuzzy number and λ cut set， as shown in Table 2.…”

Section: B Event Tree Analysis 1) Unit Identificationmentioning

confidence: 99%

Safety Pre-Control of Stope Roof Fall Accidents Using Combined Event Tree and Fuzzy Numbers in China’s Underground Noncoal Mines

Wang

Dong

et al. 2020

IEEE Access

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Among the accidents in China's underground noncoal mines including ferrous metal mines, nonferrous metal mines and nonmetallic mines, roof fall accidents are always extremely bad. The application of risk assessment to avoid roof fall accidents in coal mines is widespread. However, the traditional method has defects in its accuracy, cost, and simplicity. It cannot fundamentally ensure that workers survive a roof fall accident. Therefore, there is no great referential significance for noncoal mines. In this paper, supposing that roof fall accidents in underground noncoal mines are inevitable, we assess where we should start to take measures to prevent worker deaths. On the basis of a detailed investigation, units including those working far from the roof, noticing the signs, etc. were identified, and then a concise event tree model was built. Under this framework, the event tree model has 2 consequences, including being alive and death, and 13 scenarios related to accident occurrence. In this research, the probability of unit events was evaluated by using triangular fuzzy numbers. In addition, we found 3 scenarios with death, and then we calculated their respective probabilities. Finally, regarding the death scenario with the highest risk value, the paper recommends that priority measures should be taken to prevent deaths in roof fall accidents. The method in this paper provides a theoretical basis for pre-control measures and it is efficient, inexpensive, and simplified. Even if a roof fall accident is inevitable, we know where to start to take pre-control measures to prevent worker deaths.

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“…Impact friction sparks, open fire and spontaneous heating follow them. Then, Li et al (2020) proposed the risk of gas explosion in underground coal mine by fuzzy Bayesian network (FBN) and fuzzy analytic hierarchy process (FAHP) methods of Babao coal mine in China [11]. AHP and FBN methods are feasible to provide decision makers for coal mine gas explosion risk.…”

Section: Introductionmentioning

confidence: 99%

A Simple Numerical Model for Studying Cloud Formation Process Inthe Tropics : Heated and Cooled Surface Experiments

Noisri

2020

Wseas Transactions on Systems

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The coal dust explosion is a serious problem in under ground coal mines. Especially, Turkish Hard Coal Enterprise (TTK) has high dust concentration levels. Many parameters (humidity, ash, volatile matter, Fixed-C, calorific value, toxic gas amounts et al.) effect to dust concentration. In this study, ash, volatile matter and Fixed-C parameters are evaluated by fuzzy fault tree analysis for dust concentration in the coal seams in Karadon, Kozlu, Armutçuk, Amasra and Üzülmez collieries of TTK. The fuzzy fault tree analysis (FFTA) assesses the risks to control measurement and support decision-making for personnel safety. The model can be decision of coal dust factors to remove before dust explosions occur. Results show that the volatile matter mainly effects than others to dust concentration level. Additionally, the Armutçuk colliery (the Büyük coal seam) has maximum dust level (6.36 mg/m3) and the Üzülmez colliery (the Taban Acılık coal seam) has minimum dust level (0.77 mg/m3).

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Risk assessment of gas explosion in coal mines based on fuzzy AHP and bayesian network

Cited by 177 publications

References 44 publications

Evaluation of Cloud Computing Copyright Protection Based on AHP

Evaluation of Cloud Computing Copyright Protection Based on AHP

Safety Pre-Control of Stope Roof Fall Accidents Using Combined Event Tree and Fuzzy Numbers in China’s Underground Noncoal Mines

A Simple Numerical Model for Studying Cloud Formation Process Inthe Tropics : Heated and Cooled Surface Experiments

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