V.K. Sinha's scientific contributions
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Publications (4)
The problem of spontaneous heating has been experienced by all coal producing countries. To address the problem realistic characterisation of coal towards spontaneous heating is essentially required for taking corrective measures. It calls for a reliable liability index for characterisation of coal towards spontaneous heating of coal seam in narrow...
All the mathematical models for mine climate prediction are based on the numerical values of thermal properties of associated rock formations. Among them thermal conductivity is an important parameter. In the present paper the probe method used for thermal conductivity determination in laboratory is discussed. Using this method, thermal conductivit...
Realistic knowledge of liability index/proneness of coal towards spontaneous heating is extremely useful in working out strategies for prevention and control of fire due to spontaneous in coal mines. In India, crossing point temperature is generally adopted for the above purpose. The method, though effective, but defines only advanced stage of oxid...
Realistic knowledge of liability index/proneness of coal towards spontaneous heating is extremely useful in working out strategies for prevention and control of fire due to spontaneous heating in coal mines. In India, crossing point temperature is generally adopted for the above purpose. The method, though effective, defines only advanced stage of...
Citations
... For most geological materials, thermal conductivity is reduced by 40-60% from room temperature to 1273 K [4,5]. Because of the high frequency of coalfield fires and the increase of mining depth, the dependence on temperature of the thermophysical parameters of coal and rock masses has attracted the attention of researchers [6,7]. In a previous study, experimental results regarding the thermal diffusivity of several coal samples indicated that the thermal diffusivity decreased below 573 K and increased at temperatures above 573 K [8]. ...
... A lot of gas is generated and the temperature increases during the oxidation process additionally. Some scholars use parameters such as index gas and characteristic temperature to reflect coal spontaneous combustion by studying coal emissions [9][10][11][12][13]. However, the change of the index gas and characteristic temperature in each oxidation stage needs further research and analysis. ...
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... In order to study the oxidation of coal, the temperature program was widely used because of its short test cycle, a small amount of coal needed and the convenience of control [6][7][8]. For example, Deng et al. [9] conducted reoxidation experiments of different metamorphic coals. ...
