Research on Thermal-Insulating Material and Roadway Cooling with High Geotherm

Abstract:

The research aims to develop inorganic thermal-insulating materials of high performance, decrease high geothermal emissions from hot rock to the roadway, reduce the roadway airflow temperature, and achieve mine cooling and energy saving eventually. Firstly, the best proportion of inorganic thermal-insulating materials of high performance was designed, and a test model for thermal conductivity and mechanical analysis has been built. And through the test of thermal-insulating of the material and mechanical properties, the relation equations between vitreous micro-bead content (the main agent of thermal-insulating material) and thermal conductivity, uniaxial compressive strength, confined compressive strength have been obtained respectively. Secondly, the feature, the fitting and coupling features between the experimental models and engineering conditions in practice were analyzed comparatively, which could provide theoretical basis for the design and application of thermal-insulating materials of high performance. The industrial test shows that with thermal-insulating materials of high performance in application, the roadway airflow temperature was reduced significantly and could meet the requirements of mine pressure. Therefore, the research could offer an effective way for the mine thermal-insulating and cooling under high geothermal conditions.

• Periodical: Advanced Materials Research (Volumes 512-515)
• Pages: 915-921
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.512-515.915
• Online since: May 2012
• Authors: Yan Wei Liu, Guo Fu Li, Xiao Yong Liu
• Keywords: High Geotherm, Industrial Test, Roadway, Thermal-Insulating Material, Vitreous Micro-Bead

References

[1] GOU K H, SHU B F, YANG W J. Advances and applications of gashydrate thermal energy storage technology. Proceedings of the 1st Trabzon Int [J]. Energy and Environment Symp. Turkey: Karadeniz Technology University Press,1996: 381-386.

[2] GOU K H, SHU B F, ZHANG Y. Transient behavior of energy charge-discharge and solid-liquid phase charge in mixed gas-hydrateformation[J]. Heat Transfer Science and Technology, 1996: 728-733.

[3] P O Fanger. Thermal Comfort[M]. New York: McGraw—Hill company, 1972.

[4] Yiqun Pan etc. Ventilation for Acceptable Indoor Air Quality in Buildings[M].Final Technical Report, 1999.

[5] Rong Yao, Yubo Zhang. Reseach of Adiabatic Material Used in the Deep Mine Roadways[J]. Materials Science & Engineering, 2002, 20(04): 572-575. (in Chinese)

[6] Shujin Li, Xiaomei Wan, Tiejun Zhao. New Development of Insulation Materials[J]. Ash Comprehensive Utilization, 2001(01):31-35. (in Chinese)

[7] Motang Zhao, Yufang Gao, Rujing Yue. Application of Spraying Technology of Roadway to Prevent Nature Fire[J]. Hebei Coal, 1998(02). (in Chinese)

[8] Sheng Xu. Application of Plugging and Spraying Technology of Polyurethane Foam in Coal Mine[J]. Energy Technology and Management, 2006 (01), 45-46. (in Chinese)

[9] Congxiao Liu. Mine Climate[M]. Beijing: Coal Industry Press, 1989. (in Chinese)

[10] Deyuan Yang. Thermodynamic Calculation Discussion of Deep Mine Wind Flow[J]. Safety in Coal Mines, 1976(5) : 34-39. (in Chinese)

[11] Deyuan Yang. Mine Wind Flow Heat Exchanging [J]. Safety in Coal Mines, 2003, 34(suppl.): 94-97. (in Chinese)

[12] Deyuan Yang, Tianhong Yang. Mine Thermal Environment and its Control [M]. Beijing: Metallurgical Industry Press, 2009. (in Chinese)