المنتجات الساخنة
Characteristics of Water Hazards in China’s Coal Mines: A
网页2021年3月26日 22 Citations Metrics Abstract China’s coal mines face very complicated hydrogeological conditions and are affected by many complex water hazards. Based on
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Water Resources Utilization and Protection in the Coal Mining
网页2019年2月4日 Protection of water resources in the processes of coal mining includes mainly three methods for achieving effective utilization of mine water: water conservation
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Coal seam water infusion for dust control: a technical review
网页Coal seam water infusion was developed and widely applied in European coal mines for dust control, and was also a common practice in most Chinese coal mines. This method
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Occurrence and environmental impact of coal mine goaf water
网页2020年12月1日 Coal resources occupy a leading position in China’s energy supply (Liu and Liu, 2010; Zhao et al., 2020) and play a crucial role in the development of our
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Hydrogeological Classification and Water Inrush Accidents in China
网页2015年8月7日 In 2012, China’s State Administration of Coal Mine Safety conducted a reconnaissance and statistical analysis to better understand and characterize water
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Effect of spraying on coal dust diffusion in a coal mine based
网页2020年9月1日 Following the installation of an external spraying device in Qiuji coal mine, the combination of a spraying pressure of 8 MPa and a nozzle caliber of 2.4 mm was
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The water challenge facing China’s coal and power
网页2013年7月8日 China has around 15,000 coal mines, with roughly 70% located in water-scarce regions; 40% are estimated to have severe water shortages, especially in the north of the country. In some areas, coal
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Effect of spraying on coal dust diffusion in a coal mine based
网页2020年9月1日 Coal dust has been a serious hazard for the global coal mining industry, and water spray has been commonly used for coal dust suppression. To effectively optimize
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chinese water spraying of coal mines Grinding Mill China
网页Coal mine cave-ins leave Chinese farmland full of craters China.cn reports that unregulated coal mining in the central Chinese province has compromised the area’s
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Selection of operational parameters for a smart spraying
网页2021年4月1日 Airborne dust in underground hard coal mines is an ongoing explosion and respiratory health hazard. The latest design solution for controlling dusts, the smart spraying system, is described. From the results of stand tests, the main factors determining the efficiency of the new device are: 1) the integrated real-time acquisition of dust particle
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Application of bacteria for coal dust stabilization
网页2019年3月1日 In the coal mines, the conducted activities are always associated with technical and natural hazards. One of the most dangerous sources of these hazards is the dispersed coal dust. Today, considering the successful application of bacteria in the engineering industries, the present study aimed at stabilizing and preventing coal dust
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Review: Acid Mine Drainage (AMD) in Abandoned
网页2020年12月23日 Excessive exploitation and massive coal mine closures have brought about extensive goafs in Shanxi where 8780 coal mines have been abandoned in the last 20 years. Acid mine drainage (AMD) poses
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Use of Air-and-Water Spraying Systems for
网页2013年12月31日 The spraying systems form an integral part of longwall shearers, and their function is to reduce airborne dust levels and to prevent methane explosion. The use of air-and-water spraying systems
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Experimental Studies on the Spraying Pattern of a
网页2018年9月30日 Coal dust of the mining industry causes the number one health problem in coal miners: pneumoconiosis (black lung). Excessive coal dust in underground coal mines can also cause disastrous explosions
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Fundamental research in water spray systems for
网页2015年5月1日 Development of dust suppression water nozzles based on specific environmental parameters in coal mining, In: Proceedings: 34th International Conference of Safety in Mines Research Institutes, New
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Applications of Water Infusion for Dust Control in Underground Coal
网页2018年8月4日 Water infusion method was developed and widely applied in European coal mines for dust control, and is now a common practice in most Chinese coal mines. This method typically involves the injection of water into the coal seam usually ahead of mining to increase its moisture content and therefore reduce dust generation during mining.
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Influence of particle diameter on the wettability of coal dust
网页2019年12月1日 Introduction. Currently, the main dust prevention methods in coal mine include pre-injection of water into coal, ventilation, exhausting of dust, purification of air by dust remover, spraying, and dust isolation via enclosing (Wang et al., 2018a, 2019f; Zhou et al., 2019c; Liu et al., 2019b).
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Experimental Investigations and Field Applications
网页2018年12月23日 Therefore, the water-spraying methods are presently the most widely used dust suppression strategy in coal mine production areas . However, these methods have been observed to have low dust
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Prevention and Control of Hydrogen Sulphide
网页2020年9月28日 Hydrogen sulphide is a toxic gas often present in coal seams and seriously threatens the lives and health of underground workers in coal mines. In this study, we theoretically modelled hydrogen sulphide
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Research on the blowing-spraying synergistic dust
网页2022年9月15日 The above research on dust suppression by spraying has contributed to reducing coal dust pollution in fully mechanized faces to a great extent; however, it is still difficult to meet dust prevention requirements of coal mine. 3 during shearer operations. Since similar concentrations pose a serious threat to the health and personal safety of
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Coal dust suppression based on water mediums: A review
网页2021年10月1日 Coal seam spraying is currently widely used to reduce coal dust, which is crucial to coal mine output and safety [1, 2]. Nevertheless, the efficacy of employing water alone for dust reduction is
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Full article: A research on dust suppression mechanism and application
网页2022年9月1日 At present, the open-pit coal production of China ranks second in the world (Wang Citation 2014) and is developing toward a large-scale direction.It has been proven that large-scale open-pit coal fields are concentrated in Xinjiang, Inner Mongolia, and other ecologically vulnerable areas (Jiskani et al. Citation 2021).Green mining is the theme of
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Dust control practices in open cast mining
网页2018年5月10日 Dust control practices in open cast mining industry. Title- “DUST CONTROL PRACTICES IN OPEN CAST MINING ACTIVITY” Group Members: 1) Kishan Kumar (R136215015) 2) Subhash Kumar
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Selection of operational parameters for a smart spraying
网页2021年4月1日 Request PDF Selection of operational parameters for a smart spraying system to control airborne PM10 and PM2.5 dusts in underground coal mines Airborne dust in underground hard coal mines is
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Use of Air-and-Water Spraying Systems for Improving Dust Control in Mines
网页2013年1月1日 The sprinkler is fed with water and compressed air under pressure available in the mine network. A standard frame of the sprinkler is equipped with three spraying banks, with 3 nozzles each. Each of the nozzles is fed with water at a flow rate of approx. 0.1 dm 3 /min and air at a flow rate of approx. 50 dm 3 /min.
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Effect of spraying on coal dust diffusion in a coal mine based
网页2020年9月1日 In recent years, coal has comprised more than 50% of China’s primary energy resources and is without doubt the principal energy source in China (BP, 2019; Hua et al., 2018; Li et al., 2020b; National Bureau of Statistics of China, 2019; China Electric Power PlanningEngineering Institute, 2019).In order to satisfy the energy demands of
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Study on high-performance spraying self-healing material
网页2022年11月15日 Study on high-performance spraying self-healing material for gas sealing in coal mines. Author links open overlay panel Xiangming Hu a d, Hao Dong a, Yuntao Liang b c, In 2020 alone, China's raw coal output was 2758.08 million tons of standard coal [1]. However, the production of large amounts of raw requires the use of increasingly
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Applied Sciences Free Full-Text The Application
网页2022年10月27日 The former Soviet Union Coal Mine Machinery Design and Research Institute has developed a complete set of TKO-CBO equipment for high-pressure water spraying of coal shearers. The former
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Review and prospects of mining chemical dust suppressant
网页2022年11月12日 Coal mine pollution is a serious threat to the mine safe production and occupational health of miners. Chemical dust suppression can effectively reduce the concentration of coal dust and suppress the re-entrainment of dust. This stone discusses the research progress of three kinds of traditional dust suppressants: the wetting-type,
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