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Safety Risk Assessment and Management
Published in Debi Prasad Tripathy, Mine Safety Science and Engineering, 2019
The application of FTA is popular in various high-hazard industries, such as nuclear, chemical, space, and transport, however its application in the mining industry is yet to gain popularity. A literature study showed that FTA was applied in the mining industry to investigate the following types of accidents: dozer fall (Iverson et al., 2001), failure logic of longwall shearer (Gupta et al., 2006), coal spontaneous combustion (Beamish et al., 2010), mine water inrush (Fan et al., 2011), roof fall (Jiang et al., 2012), coal mine fire (Shaojie, 2013), haul truck-related (Zhang et al., 2014), and methane gas explosion (Kumar and Ghosh, 2017).
Thermal Behavior and Microscopic Characteristics of Water-soaked Coal Spontaneous Combustion
Published in Combustion Science and Technology, 2022
Zhian Huang, Jinyang Li, Yukun Gao, Zhenlu Shao, Yinghua Zhang
The spontaneous combustion of coal is one of the main threats to coal mines safety. On the one hand, mine fire will lead to the loss of many valuable resources; on the other hand, the toxic and harmful gases generated by spontaneous combustion will also cause damage and pollution to the environment (Carras et al. 2009; Ozdeniz 2010; Shin et al. 2018; Song and Kuenzer 2014; Xia et al. 2016; Zhang et al. 2018). More than 130 large and medium-sized mines in 25 major coal-producing provinces and regions of China are threatened by spontaneous combustion of coal to varying degrees. The phenomenon is more common in the south part of China than in the north (Liang et al. 2015; Xian et al. 2001). Consequently, the study of coal spontaneous combustion has begun (Ren et al. 2019; Shao et al. 2015), and preventing the occurrence of coal mine fires has become a serious issue in China.
Investigation on the performance and application of a new design of foam generator used for fire extinguishment in underground coal mines
Published in Combustion Science and Technology, 2018
Xin-xiao Lu, Hong-qing Zhu, Chao Hu, Hong-ru Zhao
Mine fire represents a challenging hazard for coal industries worldwide, which mainly develops through the process of coal spontaneous combustion and is frequently triggered by mining activity (Liu and Zhou, 2010; Wessling et al., 2008). Hazards posed by mine fires include destruction of property, ground surface subsidence, air pollution and methane leakage, and massive loss of coal resources, among others (Qin et al., 2009). Statistics show that about 100–200 million tons of coals per year are affected by mine fire in China, accounting for 2–3% of the world production of CO2 (Huang and Bruining, 2001; Xia et al., 2014). To prevent the mine fire, various conventional technologies, including grouting, spraying resistance agents, infusing gelatum, injecting inert gases, and so on, have been developed and applied in coal mines (Adamus, 2001; Colaizzi, 2004; Dou et al., 2014; Wang, 2008; Wang et al., 2014). These technologies have played an important role in insuring mining safety production, but still have obvious shortcomings. For instance, grouting uses a considerable amount of slurry and cannot deal with the upper fire zone due to the slurry gravity. The range of spraying resistance agents is limited and its cost input is high. Gelatum, which consists of sodium silicate and ammonium salt, can give off ammonia, a toxic gas. Inert gases are prone to diffuse and cannot remain in the area where they are needed (Zhou et al., 2006).
On the dependence of predictive models on experimental dataset: a spontaneous combustion studies scenario
Published in International Journal of Mining, Reclamation and Environment, 2021
Khadija Omar Said, Moshood Onifade, Bekir Genc, Abiodun Ismail Lawal, Jibril Abdulsalam, Joseph Muchiri Githiria, Samson Bada
Spontaneous combustion of coal is the leading cause of mine fire in coal mines [1]. The result of this phenomenon is devastating, resulting in loss of coal deposits, causing damage to mine machinery, pollution of the environment, injury, and death of mining personnel caught up in such a hazard. The process occurs when coal is exposed to oxygen in the air at room temperature, resulting in an exothermic oxidation reaction. The three prerequisites of fire namely the presence of heat from exothermic oxidation reaction, oxygen from the air, and coal, resulting in coal fire are present [2]. This phenomenon has been a long-standing hurdle globally in coal-producing nations such as South Africa, India, China, United States, Germany, Turkey, Australia, and Indonesia.