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assessment of gas and dust explosion in coal mines by means of fuzzy fault tree analysis - sciencedirect

During the past decade, coal dust and gas explosions have been the most two serious types of disasters in China, threatening the lives of miners and causing significant losses in terms of national property. In this paper, an evaluation model of coal dust and gas explosions was constructed based on a fuzzy fault tree by taking the Xingli Coal Mine as a research site to identify the risk factors of coal dust and gas explosions. Furthermore, the hazards associated with such explosions were evaluated for this particular coal mine. After completing an on-site investigation, the fuzzy probabilities of basic events were obtained through expert scoring, and these expert opinions were then aggregated as trapezoidal fuzzy numbers to calculate the degrees of importance of all basic events. Finally, these degrees of importance were sorted. According to the resulting order, the basic events with higher probabilities were determined to identify key hazards in the daily safety management of this particular coal mine. Moreover, effective measures for preventing gas and coal dust explosions were derived. The fuzzy fault tree analysis method is of high significance in the analysis of accidental coal mine explosions and provides theoretical guidance for improving the efficiency of coal mine safety management in a scientific and feasible manner.

henan mining machinery and equipment manufacturer - maintenance checklist for coal crushing plant

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tension in india over plan to turn goa into coal hub

Environmentalists and politicians in Goa, India, known globally for its beaches and dense forests, are opposing a plan by Prime Minister Narendra Modis government to turn the southwestern coastal state into a coal transportation hub.

Protests against the initiative began last year, when New Delhi unveiled three infrastructure projects to increase coking coal handling at the state-run MormugaoPortTrust (MPT) in Goa. The proposed developments include the expansion of a highway, railway, and a power transmission network, which locals claim would cut through ecologically sensitive areas, such as the Mollem National Park.

People are asking, Whats in it for us? lawyer Savio Correa, who lives near the Mormugao port, told the Financial Times. He added the plan, particularly the railway track expansion, would affect thousands of people, destroy the environment and make it impossible to live due to noise and coal dust pollution.

The park and the adjoining Bhagwan Mahaveer Sanctuary, covering a protected area of 240 sq km, is set to be splintered and partially deforested by the invasive projects, activist Claude Alvares, director of the Goa Foundation, told local media last year.

The area in question has been recognized by Unesco as one of theworlds eight hottest hotspots of biological diversity. It is also the site of a 12th Century Hindu temple, tropical forests and waterfalls, including Dudhsagar Falls, a major tourist draw.

Goas government has said the projects have nothing to do with coal. They say the new power line will provide the state much-needed electricity,the highway will meet the demands of growing trafficand the extra railway line will allow more goods and passenger trains to run.

blast at anglo american coal mine in australia injures five

An explosion halted production on Wednesday at a coal mine run by Anglo American in Australias northeastern state of Queensland, injuring five people just months after a review of the industry called for better regulation.

The incident is the companys second in 15 months in the area, after a miner died and four were injured at an adjoining complex in February last year in an underground accident that halted operations for four days.

The mine is in the process of being evacuated and operations stopped, Anglo American said, adding that those injured at its Grosvenor metallurgical coal mine in the central Bowen Basin had been taken to hospital, and their families told.

Last year the state commissioned an industry review after six deaths at mining sites over the year to July 2019, and passed legislation for an independent health and safety regulator, expected to be set up by the second half of 2020.