Information fusion of plume control and personnel escape during the emergency rescue of external-caused fire in a coal mine

Wang, Kai; Jiang, Shuguang; Ma, Xiaoping; Wu, Zhiyong; Shao, Huili; Zhang, Weiqing; Cui, Chuanbo

doi:10.1016/j.psep.2016.06.026

Cited by 42 publications

(17 citation statements)

References 19 publications

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“…The attenuation coefficient and frequency were fitted, and the results are given by in Eq (5) and in Table 5. According to the literature [45], the reflection (R ij ) and refraction coefficients (T ij ) of radar waves propagating in coal on the boundary interfaces could be characterized by Eqs (6) and PLOS ONE (7), respectively (Fig 7).…”

Section: Plos Onementioning

confidence: 99%

“…For example, two particularly significant coal mine accidents and eight major accidents occurred in 2016 [6]. Coal mine accidents inflict large numbers of casualties, along with severe economic losses and adverse social impacts [7]. The earlier the location and condition of the people caught in mining accidents are known, the greater the possibility of them being rescued.…”

Section: Introductionmentioning

confidence: 99%

“…15.76×10 7 17.14×10 7 16.29×10 7 15.30×10 7 17. 17×10 7 1000 15.74×10 7 16.84×10 7 16.26×10 7 15.26×10 7 17.14×10 7…”

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Propagation of ground penetrating radar waves in Chinese coals

et al. 2020

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This paper reports an experimental study on the electrical properties of five coal samples taken from various Chinese coal mines. The dielectric permittivity and specific resistivity of grinded coal samples subjected to electromagnetic (EM) fields in a wide frequency spectrum were determined. Based on the experimental data, a set of approximating equations of the change in electric properties the 100-1000 MHz frequency region was obtained. These equations, along with EM equations for EM speed and attenuation, were used for modeling and studying radar-wave propagation in a coal seam and radar-wave reflection from the body of miners trapped in collapsed tunnels. The modeling concept assumes that a radar transducer with the dominating frequency of 500 MHz is lowered through a vertical or inclined rescue borehole to the depth of the coal seam. It is assumed that only the miner is present in the part of the tunnel that did not collapse. Thus, in the path of the radar wave from the transducer to the human body, only one geological interface reflecting the radar signals is present (coal-air) and one is connected with human body. The human (acting as the reflector) can be located at various distances from the tunnel face; this factor was included in the analyzed geometrical model. Based on the modeling results of different thickness coal seams (2, 3, 4, 5, 6, 7, 8m), conclude that a radar wave reflected from a human body can be reliably measured, when the distance between the human and the transducer is not exceed 8m.

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Section: Plos Onementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Propagation of ground penetrating radar waves in Chinese coals

et al. 2020

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“…[4][5][6][7] Jarosław Brodny revealed that numerical methods could be successfully used for analysing fire and ventilation phenomena in closed headings. 8,26 Aiming at the major safety demands for coal mines, many types of disaster smoke flow simulation software have developed by scholars to study the evolution laws and damage effects of smoke flow caused by fires. 9,10 For calculations, ANSYS fluent software based on finite volume method that enables very precisely to determine the air and parameters at any point of tested goaf.…”

Section: Introductionmentioning

confidence: 99%

Study on fire smoke flow characteristics in the ventilation network and linkage control system in coal mines

et al. 2020

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“…Recently, domestic and foreign scholars have used computers to examine methods to create an optimal route [5][6][7]. At present, studies on the calculation of the escape route are primarily focused on the optimization of computer algorithms, including Yan guangwei et al [8] who put forward a new method of escape route planning in coal mines by using the improved ant colony algorithm.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Escape Velocity of Miners during Mine Fire Periods

Zhang

Rongshan

Zhao

et al. 2018

Mathematical Problems in Engineering

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The purpose of this study is to accurately calculate the escape velocity of miners under different roadway conditions during mine fire periods. The experiment to examine escape velocity was carried out in the roadway of the Mu Chengjian Coal Mine. In the experiment, the relationships between the miner escape velocity and the inclination of the roadway, the area of the accessible section of the roadway, and the average wind velocity of the roadway were obtained through single factor analysis, and two multiple regression equations of the escape velocity were developed through multivariable linear regression analysis. The escape velocities of the miners were then predicted, and the error was analyzed with multiple regression equations. The experimental results show that the miner escape velocity decreases with an increase in the absolute value of the inclination of the roadway and increases with an increase of the accessible section area of the roadway and the average wind velocity of the roadway. In addition, the multiple regression equations have the strongest significance if the independent variables are the inclination of the roadway, the accessible section area of the roadway, and the type of roadway, and the contribution rate of the inclination of the roadway to the escape velocity is the highest. The predicted results calculated by the multiple regression equations are close to the experimental data, and the prediction errors are less than 10%. Consequently, we conclude that the multiple regression equations can be used to predict the miner escape velocity during periods of mine fires.

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Information fusion of plume control and personnel escape during the emergency rescue of external-caused fire in a coal mine

Cited by 42 publications

References 19 publications

Propagation of ground penetrating radar waves in Chinese coals

Propagation of ground penetrating radar waves in Chinese coals

Study on fire smoke flow characteristics in the ventilation network and linkage control system in coal mines

Experimental Study on the Escape Velocity of Miners during Mine Fire Periods

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