Experimental study on the thermophysical properties of Jimsar oil shale
Zhijun Liu,
Haotian Ma,
Zhen Wang,
Yuzhen Guo,
Wei Li,
Zhiyuan Hou
Affiliations
Zhijun Liu
College of Mining Engineering, Heilongjiang University of Science and Technology, Harbin 150022, China; Heilongjiang Ground Pressure and Gas Control in Deep Mining Key Laboratory, Heilongjiang University of Science and Technology, Harbin 150022, China
Haotian Ma
College of Mining Engineering, Heilongjiang University of Science and Technology, Harbin 150022, China
Zhen Wang
College of Mining Engineering, Heilongjiang University of Science and Technology, Harbin 150022, China
Yuzhen Guo
College of Mining Engineering, Heilongjiang University of Science and Technology, Harbin 150022, China
Wei Li
College of Mining Engineering, Heilongjiang University of Science and Technology, Harbin 150022, China;
School of Safety Engineering, China University of Mining & Technology, Xuzhou 221116, China / National Engineering Research Center for Coal & Gas Control, China University of Mining & Technology, Xuzhou 221116, China
Zhiyuan Hou
College of Mining Engineering, Heilongjiang University of Science and Technology, Harbin 150022, China; Heilongjiang Ground Pressure and Gas Control in Deep Mining Key Laboratory, Heilongjiang University of Science and Technology, Harbin 150022, China
Oil shale is a potential strategic reserve resource and a significant supplementary energy source due to its huge reserves and numerous utilization methods. The study of oil shale thermophysical properties can provide significant guidance for proposed in-situ mining. Taking the oil shale in Jimsar, Xinjiang as an example and using thermophysical experiments, this paper studies the variation in thermophysical properties of oil shale with temperature. The results show that the specific heat capacity of oil shale increases with increasing temperature below 390 °C, but the change decreases with increase of temperature; however, when the temperature exceeds 390 °C, the specific heat value change fluctuates irregularly. At 31â720 °C, the thermal expansion of oil shale indicates obvious anisotropy. Namely, in the vertical bedding direction, the thermal expansion rate manifests a typical two-stage increase, while in the parallel bedding direction, the thermal expansion coefficient exhibits an overall increasing trend but fluctuates significantly due to the reaction of components within the oil shale.
